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1 IPr=1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene).
2 lene, maleic anhydride, pyridine, imidazol-2-ylidene).
3 es ligands (IMes = N,N'-dimesityl-imidazol-2-ylidene).
4 (2) = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene).
5 Pt(NHC)3Cl]Cl (NHC = 1,3-dimethyl imidazol-2-ylidene).
6 C = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene).
7 2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene).
8  = 1,3-Bis(2,6-diisopropylphenyl)-imidazol-2-ylidene).
9 2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene).
10 t ([(i)Pr2Im] = 1,3-di(isopropyl)imidazole-2-ylidene).
11 s = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene).
12 pylphenyl-4,6-diketo-5,5-dimethylpyrimidin-2-ylidene.
13 ene is compared with that of spiro[2.3]hex-4-ylidene.
14 own to be different from that of imidazole-2-ylidenes.
15 acoordinate with a Ph group and two oxazol-2-ylidenes.
16 Pr [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene].
17                     Bicyclo[3.2.1]oct-6-en-8-ylidene (1) can assume either the conformation of "class
18  The basicity of 1,3-di-tert-butylimidazol-2-ylidene (1) was measured in THF against three hydrocarbo
19 lose to those of 1,3-dimethylimidazolidine-2-ylidene (1).
20 uIm)3(-) = phenyltris(3-tert-butylimidazol-2-ylidene)), (1) low-spin d(3) (S = 1/2) coordination comp
21 lysis at -80 degrees C of 2,4,6-tri(propan-2-ylidene)-1,3,5-trioxane.
22 -11H-benzo[5, 6]cyclohepta[1, 2-b]pyridin-11-ylidene)-1-piperidinyl]-2-oxoethyl]pyridine N-oxide wher
23 3-6-methyl)-3-(2,6-dimethylphenyl)imidazol-2-ylidene-1-yl (the deprotonated form of IXy); Cp* = eta(5
24 3-(4-fluorobutyl)-4,5-dimethylthiazole-2(3H)-ylidene]-(1,7-dicarba-closo-dodecaboranyl)-carboxamide (
25 lcarbenes 8 and 11, thiacyclohexa-3,5-dien-2-ylidene, 10, and thiacyclohexa-2,3,5-triene, 6.
26 nd spectra are obtained from the imidazole-2-ylidene (13)C atoms that are not bound to Fe.
27  (1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene) 13, SIPr (1,3-bis(2,6-diisopropylphenyl)imidazo
28  (1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) 14, IPr (1,3-bis(2,6-diisopropylphenyl)imidazol
29 Pr (1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) 15, IMes (1,3-bis(2,4,6-trimethylphenyl)imidazo
30 es (1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) 16).
31 rmolysis of N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-1H-pyrazol-5-amines 3 gives 1H-pyrazolo[3,4-d]t
32 in products N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-1H-pyrazol-5-amines 3, and 6H-pyrazolo[3,4-c]is
33 eacting (Z)-N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-1H-pyrazol-5-amines 5 with Et2NH and then with
34 yrazol-1-yl)-4-oxo-4,5-dihydro-1,3-thiazol-5-ylidene ]-2,3-dihydro-1H-indol-2-ones 1-23 and 3-(3,5-di
35  adduct formed between [Au(9-methylcaffein-8-ylidene)2 ](+) and Tel 23 DNA G-quadruplex was solved.
36 arbene gold(I) complex [Au(9-methylcaffein-8-ylidene)2 ]BF4 is an exceptional organometallic compound
37 (Mes)CNC = 2,6-(2,4,6-Me-C(6)H(2)-imidazol-2-ylidene)(2)-3,5-Me(2)-pyridine) resulted in rapid oxidat
38 3-(2-methoxyethyl)-4,5-dimethylthiazol-2(3H)-ylidene)-2,2,3,3-tetra methyl-cyclopropanecarboxamide ([
39 (3-(4-fluorobutyl)-4,5-dimethylthiazol-2(3H)-ylidene)-2,2,3,3-tetramethyl-c yclopropanecarboxamide (2
40 n both ligand [isopropyl-2-(1,3-dithietane-2-ylidene)-2-[N-(4-methylthiazol-2-yl)carbamoyl]acet ate (
41 ] 2 (L2 =(p-tolyl)2 B[1-(1-adamantyl)-3-yl-2-ylidene]2 ) has been synthesized by salt-metathesis reac
42  generate endo-tricyclo[3.2.1.0(2,4)]octan-8-ylidene (3) by either photolysis or thermolysis.
43 oic acid (RA) analogues [8-(2'-cyclohexen-1'-ylidene)-3, 7-dimethyl-2,4,6-octatrienoic acids with dif
44 6Z,8Z)-8-(3',4'-Dihydro-1'(2H)-naphthalen-1'-ylidene)-3,7-dimethyl-2,3,6-o ctatrienoinic acid (UAB30)
45 B30 [8-(3', 4'-dihydro-1'(2'H)-naphthalen-1'-ylidene)-3,7-dimethyl-2,4, 6-octatrienoic acid], which h
46 Z,8E)-8-(3',4'-Dihydro-1'(2'H)-naphthalen-1'-ylidene)-3,7-dimethyl-2,4,6- octatrienoic acid, 9cUAB30,
47 trans-retinoids that are 8-(2'-cyclohexen-1'-ylidene)-3,7-dimethyl-2,4,6-octatrienoic acids with diff
48 3))](2+) (Mebim-py is 1-methylbenzimidazol-2-ylidene-3-(2'-pyridine)) and both isomers of the catalyt
49 hilic carbene 1,3,4,5-tetramethyl-imidazol-2-ylidene (4), the ring-opening polymerization occurs with
50                             A set of 3,5-bis(ylidene)-4-piperidone-1-phosphonothioates 20a-l was synt
51 ough dehydrochlorination reaction of 3,5-bis(ylidene)-4-piperidones 18a-l and diethyl chlorothiophosp
52 2 inhibitor 3-[1-(3H-imidazol-4-yl)-meth-(Z)-ylidene]-5-methoxy-1,3-dihydro-indol-2-on e (SU9516) wer
53 w here that 3-[1-(3H-Imidazol-4-yl)-meth-(Z)-ylidene]-5-methoxy-1,3-dihydro-indol-2-on e (SU9516), a
54  3,5-diylidenethiomorpholine-2,6-dithione or ylidene-6-thioxo[1,2]dithiolo[3,4-b][1,4]thiazin-3-one g
55 yclophanes 18-20, the 9,10-bis(1,3-dithiol-2-ylidene)-9, 10-dihydroanthracene moieties adopt a saddle
56 hly pi-extended 9,10-bis(benzo-1,3-dithiol-2-ylidene)-9,10-dihydroanthracene (sExTTF) moiety, which e
57                                   Imidazol-2-ylidenes, a family of N-heterocyclic carbenes (NHC), are
58 4-methyl-5-oxo-3-vinyl-(1, 5-dihydropyrrol-2-ylidene)acetamide and 3-methyl-5-oxo-4-vinyl-(1, 5-dihyd
59 3-methyl-5-oxo-4-vinyl-(1, 5-dihydropyrrol-2-ylidene)acetamide and the third was 4-methyl-3-vinylmale
60 n reaction of 2-(4-oxo-2-thioxothiazolidin-5-ylidene)acetates and alpha,alpha-dicyanoolefines under u
61 roxy-5,7,8,9-tetrahydro-6H-benzo[7]annulen-6-ylidene)acetic acid (NCS-382) is structurally related to
62 8,9-tetrahydro-5-hydroxy-5H-benzocyclohept-6-ylidene)acetic acid showed a 39% reduction (P = 0.0056)
63       Here we report that 1H-1,2,3-triazol-5-ylidenes act not only as stoichiometric one-electron don
64  3-(2,6-diethylphenyl)-4,5-dimethylthiazol-2-ylidene afforded the most efficient and stable catalysts
65 dation of organoboron L2PhB: 1 (L = oxazol-2-ylidene) afforded a dicationic diborane(6) species [L2Ph
66  (IPr = 1,3-bis(diisopropylphenyl)imidazol-2-ylidene), alkenyldiazo carbonyl species react with organ
67 cules of six N-(1-methyl-4-oxoimidazolidin-2-ylidene) alpha-amino acids and the development of a stab
68 y up-take of N-(1-methyl-4-oxoimidazolidin-2-ylidene) alpha-amino acids in hyperglycemic diabetes pat
69              N-(1-Methyl-4-oxoimidazolidin-2-ylidene) alpha-amino acids were recently identified in r
70 h alternative NHC isomers, namely imidazol-5-ylidenes (also termed abnormal NHCs or aNHCs, because th
71 eaturing an NHC isomer, namely an imidazol-5-ylidene, also termed abnormal NHC (aNHCs).
72 yl)furan-2-yl)methylene)-4-ox othiazolidin-2-ylidene)amino)benzoic acid (PT-1), which attenuates the
73       2-[(3,5-Dichloro-4H-1,2,6-thiadiazin-4-ylidene)amino]benzamides are cyclized to benzo[e][1,2,6]
74 entration of N-(1-methyl-4-oxoimidazolidin-2-ylidene) aminopropionic acid was elevated in plasma and
75 rimethyl-1 -azatricyclo[3.3.1.1(3,7)]decan-2-ylidene, an aminocarbene without pi conjugation, has bee
76 ) complexes with 1,3-substituted imidazole-2-ylidene and benzimidazole-2-ylidene ligands of the type
77 o appreciable differences between imidazol-2-ylidene and imidazolin-2-ylidene catalysts were observed
78  energy surface of 1,6-methano[10]annulen-11-ylidene and its isomers has been investigated by density
79 dimesityl-4,6-diketo-5,5-dimethylpyrimidin-2-ylidene and N,N'-diisopropylphenyl-4,6-diketo-5,5-dimeth
80 gma-donors and pai-acceptors than imidazol-2-ylidenes and imidazolidin-2-ylidenes, the well-known N-h
81 ne=NHC(iPr) (N,N'-diisopropyl-4,5-dimethyl-2-ylidene) and (Me2) CAAC (1-(2,6-diisopropylphenyl)-3,3,5
82 t (H2Im = 1,3-dimethyl-4,5-dihydroimidazol-2-ylidene) and a -PPh2 group connected through structurall
83 opylphenyl)-3,3,5,5-tetramethyl-pyrrolidin-2-ylidene) and featuring unsupported Al-Cu bonds, have bee
84 Mes=1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) and IPr (IPr=1,3- bis(2,6-diisopropylphenyl)imi
85 r = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) and O2 leads to the surprising discovery that a
86 s = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) and the second to the methoxymethylidene metal
87 l-1,1'-bis(p-tolyl)-4,4'-bis(1,2,3-triazol-5-ylidene)), and show that the superior sigma-donor and pi
88 arbenes (NHC = 1,3,4,5-tetramethylimidazol-2-ylidene), and having chloride as a countercation were su
89 , including the poor pi-accepting imidazol-2-ylidene, and phosphines giving rise to the corresponding
90 s catalyzed by imidazol-2-ylidene, triazol-3-ylidene, and thiazol-2-ylidene have been investigated co
91             N-(4-Chloro-5H-1,2,3-dithiazol-5-ylidene)anilines react with DABCO in hot PhCl to give N-
92 roethyl)piperazin-1-yl]-5H-1,2,3-dithiazol-5-ylidene}anilines in high yields (70-92%).
93 r = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) are disclosed.
94 2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene) as a precatalyst for the anaerobic oxidation of
95 ed by coupling functionalized benzimidazol-2-ylidenes, as their free N-heterocyclic carbenes or gener
96                           Protonation of the ylidene at the N(7/9)-atom yields complexes bearing a pr
97 ighly functionalized benzo[ d]thiazol-2(3 H)-ylidene benzamide in the presence of water was accomplis
98  to the formation of benzo[ d]thiazol-2(3 H)-ylidene benzamide.
99 ran-2(3H)-ones and 6-methyl-3-(pyridin-2(1H)-ylidene)benzofuran-2(3H)-one.
100  providing 6-methyl-3-(1-methylpyridin-2(1H)-ylidene)benzofuran-2(3H)-one.
101 ffording a novel class of 3-(pyrimidin-2(1H)-ylidene)benzofuran-2(3H)-ones and 6-methyl-3-(pyridin-2(
102 controlled assemblage of a pivotal (Z)-gamma-ylidene-beta-bromobutenolide intermediate by stereodirec
103 ntified FMP-Red-Dye as 5,5'-(1-propen-1-yl-3-ylidene)bis[1,3-dimethyl-2-thio-barbituric acid].
104  example, reaction of 1,3-dimethylimidazol-2-ylidene borane (diMe-Imd-BH3) with 10% I2 followed by ad
105 ith readily available 1,3-dimethylimidazol-2-ylidene borane and a water-soluble triazole relative are
106      The synthesis of 1,3-dimethylimidazol-2-ylidene borane has been conducted on scales up to 100 mm
107                   1-Butyl-3-methylimidazol-2-ylidene borane has been synthesized directly from two in
108 ith readily available 1,3-dimethylimidazol-2-ylidene borane provides reductively decyanated products
109 on of bis-(2,6-diisopropylphenyl)-imidazol-2-ylidene borane with dimethyl acetylenedicarboxylate give
110          Reactions of 1,3-dimethylimidazol-2-ylidene-borane (diMe-Imd-BH3) and related NHC-boranes wi
111                        1,3-Dialkylimidazol-2-ylidene boranes have been made in moderate yields (typic
112 ive B,B-disubstituted 1,3-dimethylimidazol-2-ylidene boranes.
113 (phtmeimb = phenyltris(3-methyl-imidazolin-2-ylidene)borate) and triethylamine as well as N,N-dimethy
114 )(3)(-) = phenyltris(3- tert-butylimidazol-2-ylidene)borate), and [Fe(V)(O)(TAML)](-) (5, TAML(4-) =
115 (PF(6)) (L = [phenyl(tris(3-methylimidazol-1-ylidene))borate](-)).
116 htmeimb is phenyl[tris(3-methyl-imidazolin-2-ylidene)]borate, with iodide, bromide, and chloride were
117 m)(3)(-) = phenyltris(3-tert-butylimidazol-2-ylidene)borato, BAr(F24) = B(3,5-(CF(3))(2)C(6)H(3))(4)(
118 electron-rich aromatic rings attached to the ylidene bridge increase the fragmentation rate, while el
119 for the reverse protonation of the triazol-3-ylidenes by solvent water is close to that for dielectri
120 he Breslow intermediate in case of thiazol-2-ylidene (by ca. 10 kcal/mol) compared to the other two c
121 r = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene; Bzl-3,5Me = 1,3-bis(3,5-dimethylphenyl)-1H-benz
122 thylamino-4-methyl-2-phenyl)cyclobut-2-ene-1-ylidene]c hromium (1e) leads to antiaromatic conjugate a
123  the carbon-carbon double bond of imidazol-2-ylidenes can be readily mono- and difunctionalized.
124 es =1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene] can be readily isolated and manipulated in solu
125  was simplified by generating the imidazol-2-ylidene catalysts in situ.
126  between imidazol-2-ylidene and imidazolin-2-ylidene catalysts were observed.
127 3-diethylamino-2,4-dimethyl)cyclobut-2-ene-1-ylidene]chromi um (1d) and pentacarbonyl[(3-diethylamino
128 -diethylamino-2,5-dimethyl)cyclopent-2-ene-1-ylidene]chromi um (5), [dimethylamino(methyl)carbene]pen
129 =1,3-bis(2,4,6-trimethylphenyl), imidazole-2-ylidene; COD=cyclooctadiene)] was first activated in the
130 =1,3-bis(2,4,6-trimethylphenyl), imidazole-2-ylidene; COD=cyclooctadiene] catalyst onto silica partic
131 cterization of two neutral gold(I) indazol-3-ylidene complexes bearing a carbinol or silanol group at
132 pendent on the sterics of the benzimidazol-2-ylidene component and the electronics of the azide compo
133 1; IXy=1,3-bis(2,6-dimethylphenyl)imidazol-2-ylidene; Cp*=eta(5) -C5 Me5 ; Trip=2,4,6-iPr3 C6 H2 ) wi
134 ,3-bis(2,6-diisopropylphenyl)-imidazolidin-2-ylidene; Cp=cyclopentadienyl), gives rise to an asymmetr
135 utylphenyl)methyl]-4-methylphenyl]imidazol-2-ylidene) CuOPh [(IPr**)CuOPh] reacts with poly(methylhyd
136 bitors, (1S,3S)-3-amino-4-(perfluoropropan-2-ylidene)cyclopentane-1-carboxylic acid hydrochloride (1)
137 ; IPr = 1,3-bis(diisopropyl)phenylimidazol-2-ylidene; dbabh = 2,3:5,6-dibenzo-7-azabicyclo[2.2.1]hept
138 NO)(2)) (NHC-iPr = 1,3-diisopropylimidazol-2-ylidene) demonstrate distinct differences of the isomer
139 ing 2-methyl-6-styryl-substituted-4H-pyran-4-ylidene derivatives in reactions with benzylamine and in
140 3,4-triphenyl-4,5-dihydro-1H-1,2,4-triazol-5-ylidene) derivatives as methanol insertion products, (Rx
141 nt resonance contributor of penta-1,4-diyn-3-ylidene (diethynylcarbene, H-C[triple bond]C-:C-C[triple
142 reas cis-dichlorido[(1,3-dibenzyl)imidazol-2-ylidene](dimethyl sulfoxide) platinum(II) 3a induced G2/
143  of 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (dipp-Imd-BH(2)X, X = halide or sulfonate) have
144 r = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene; DIPP = 2,6-(i)Pr2-C6H3) is reported.
145                   A series of new 4H-pyran-4-ylidene donor-based chromophores with a thiophene ring i
146 henyl)-4,4-diethyl-2,2-dimethyl-pyrrolidin-5-ylidene ((Et)CAAC) were discovered to afford three diffe
147 rimethyl-3a,4-dihydro-2,1-benzisoxazol-5(3H)-ylidene)ethanal (10), the trans isomers recombined formi
148 y-5,7,8,9-tetrahydro-6H-benzo[a][7]annulen-6-ylidene) ethanoic acid (NCS-382) is an antagonist for ga
149  use of 1-(4,4-dimethyl-2, 6-dioxocyclohex-1-ylidene) ethyl (Dde) in place of Z protection on the ami
150 c carbene ligand tris[2-(3-mesitylimidazol-2-ylidene)ethyl]amine (TIMEN(Mes)), which is known to supp
151 (1) (where TIMEN = (tris[2-(3-arylimidazol-2-ylidene)ethyl]amine) reacts with CO, one-electron oxidiz
152 where TIMEN(xyl) = tris[2-(3-xylylimidazol-2-ylidene)ethyl]amine) yields the isolable molecular Mn(IV
153  presence of electron donor 9-(1,3-dithiol-2-ylidene)fluorene (compounds 13 and 14) and electron acce
154 , bithiophene, 9-(4,5-dimethyl-1,3-dithiol-2-ylidene)fluorene, and triphenylamine], have been synthes
155 he TTF-OXD and 9-(4,5-dimethyl-1,3-dithiol-2-ylidene)fluorene-OXD hybrids, 10d, 10g, 11, and 13, are
156 IMes)(2)] (IMes = 1,3-dimesitylimidazoline-2-ylidene) for the radical borylation of chloroarenes is r
157  a previously unreported imidazobenzoxazol-1-ylidene framework.
158 developed for the synthesis of pyrrolidine-2-ylidenes from NH-isoxazolines and electron-deficient all
159 yl or benzyl; IMes = 1,3-dimesitylimidazol-2-ylidene) generates R*, ultimately forming R-R coupled hy
160 NHC ((Me)NHC = 1,3,4,5-tetramethylimidazol-2-ylidene) gives the carbene and phosphine stabilized stan
161 ,3-diethyl-4,5-bis(4-fluorophenyl)imidazol-2-ylidene]gold(I) bromide 3b as the most cytotoxic compoun
162 ationic bis[1,3-diethyl-4,5-diarylimidazol-2-ylidene]gold(I) complexes with 4-OCH(3) or 4-F substitue
163 SiMe3 )2 (ITMe=1,3,4,5-tetramethylimidazol-2-ylidene) has been synthesized by mild oxidative cleavage
164 imethylphenyl)-3,4,5,6-tetrahydropyrimidin-2-ylidene] has been structurally characterized and display
165  = N,N'-bis(2,6-diisopropylphenyl)imidazol-2-ylidene], has been developed.
166 -2-ylidene, triazol-3-ylidene, and thiazol-2-ylidene have been investigated computationally.
167 2)IMes = 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene) have been prepared; these complexes are readily
168 lic carbenes (3-methyl-indol-2-yl)imidazol-2-ylidenes, however, can be trapped by sulfur, triethylbor
169 thyl-5-oxo-3-(phosphonatooxymethyl)pyridin-2-ylidene]hydr azinyl]benzoate as a 14-3-3 inhibitor, whic
170 e development of (5-oxo-1,5-dihydropyrazol-4-ylidene)hydrazines which exhibited efficacies equivalent
171 cleophilicity, 1,3-di-tert-butylimidazolin-2-ylidene (I(t)Bu), 1,3-dimesitylimidazolin-2-ylidene (IMe
172 IiPr (1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene, IMe(4) (1,3,4,5-tetramethylimidazol-2-ylidene);
173 ), 1,3-bis-(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) and 1,3-bis-(2,6-diisopropylphenyl)imidaz
174 ene 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) and spanning formal oxidation states W(0)
175 NHC=1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) or 1,3-bis(2,6-diisopropylphenyl)imidazol
176 -ylidene (I(t)Bu), 1,3-dimesitylimidazolin-2-ylidene (IMes), and 1,3,4-triphenyl-4,5-dihydro-1H-1,2,4
177 ith 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes, 1) generates the poly(carbosiloxane) p(TM
178 ted the isolation of a metal-free imidazol-2-ylidene in 1991.
179 = 1,3-bis(2,4,6-trimethyl-phenyl)imidazole-2-ylidene) in the presence of an excess of para-hydrogen (
180  (N,N'-bis(2,6-diisopropylphenyl)imidazol)-2-ylidene], in the Suzuki-Miyaura cross-coupling reaction
181 s = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene), indicating that the bonds are the same within
182 4-(benzo[d][1,3]dioxol-5-yl)-2-oxobut-3-en-1-ylidene)indolin-2-one (designated herein as HOI-07) was
183 2-(4'-OBzl-1',7'-dihydro-7'-oxo-6'H-indol-6'-ylidene)indolin-3-one, in which a pyrrole ring and a ben
184 (3Z)-6-bromo-3-[(3E)-3-hydroxyiminoindolin-2-ylidene]indolin-2-one (15) as a potent, direct, and reve
185 her carbene, namely, a benzo[h]isoquinolin-1-ylidene into a benzo[h]isoquinolin-3-ylidene, is reporte
186 ene 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) and cyclic (alkyl)(amino)carbene (2,6-diis
187 ing 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) and phosphane ligands (L1-L7) were synthes
188 red 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) or its saturated analogue, 1,3-bis(2,6-dii
189  or 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr)), towards [Na(dioxane)x ][PnCO] (Pn=P, As)
190 nd 1,3-bis-(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr), and of the two corresponding ruthenium-ba
191 idation of an iridium-N-dimethylimidazolin-2-ylidene (Ir-NHC-Me2) complex adsorbed on a polycrystalli
192 hyl-1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene]iridium(I) as a polarization transfer catalyst p
193                 Tricyclo[2.1.0.0(2,5)]pent-3-ylidene is a carbene foreseen to rearrange to pyramidane
194             endo-Tricyclo[3.2.1.0(2,4)]oct-8-ylidene is a foiled carbene reaction intermediate.
195                             Spiro[3.3]hept-1-ylidene is a markedly strained carbene reaction intermed
196 alcohol adducts of 1,3-dimesitylimidazolin-2-ylidene is described.
197 e NHC 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene is employed as the external base.
198 , and the N-heterocyclic carbene quinoline-2-ylidene is not formed as a tautomer.
199 e2) = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene) is obtained from the reaction of the alpha-chlo
200 1,3-bis(2,6-diisopropylphenyl)imidazolidin-2-ylidene) is used in place of Ni(COD)2/SIPr.HBF4/KO(t)Bu
201 re HL(Ph) is 1,3,4-triphenyl-1,2,4-triazol-5-ylidene, is available from (NBu(4))[TcNCl(4)] and HL(Ph)
202 nolin-1-ylidene into a benzo[h]isoquinolin-3-ylidene, is reported.
203  of highly substituted 3-(dihydrofuran-3(2H)-ylidene)isobenzofuran-1(3H)-imines from 2-(4-hydroxybut-
204 '-dione, (E)-3-(3-oxobenzo[c] thiophen-1(3H)-ylidene)isobenzofuran-1(3H)-one, and (E)-3H,3'H-[1,1'-bi
205 [IXy = 1,3-bis(2,6-dimethylphenyl)imidazol-2-ylidene; IXy-H = 1-(2-CH2C6H3-6-methyl)-3-(2,6-dimethylp
206  IXy = 1,3-bis(2,6-dimethylphenyl)imidazol-2-ylidene; "IXy-H" is the deprotonated form of IXy) exhibi
207 hylcycloheptatrienyl)-4,5-dihydroimidazol-2- ylidene}L(2)(PCy(3))Cl(2).
208 eneglycolato) with 1,3-dimethylimidazoline-2-ylidene (L1), 1,1'-methylene-3,3'-dimethyl-4,4'-diimidaz
209 2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene] leads to selective cross-coupling at chloride,
210 complexes bearing a (1,3-dibenzyl)imidazol-2-ylidene ligand but different leaving groups trans to it
211 t platform in which the anchoring imidazol-2-ylidene ligand IPr((NMe2)2) incorporates two dimethylami
212    Iridium(I) complexes having an imidazol-2-ylidene ligand with benzylic wingtips efficiently cataly
213 ulting Pt(II) complexes feature a C(8)-bound ylidene ligand.
214 ate, the aryl substituents of the thiazole-2-ylidene ligands are located above the empty coordination
215                        Among five thiazole-2-ylidene ligands examined, 3-(2,4,6-trimethylphenyl)- and
216 sis catalysts bearing a series of thiazole-2-ylidene ligands has been prepared.
217 uted imidazole-2-ylidene and benzimidazole-2-ylidene ligands of the type NHC-Au-L (NHC = N-heterocycl
218 itions of the N-aryl group of the thiazole-2-ylidene ligands, the phosphine-free catalysts lose stabi
219 ropyl-3,3,9-trimethyl-2-azaspiro[4.5]decan-2-ylidene, MAC = 1,3-bis(2,6-diisopropylphenyl)-5,5-dimeth
220 )2-(5,6-dihydro-4H-cyclopenta [b]thiophene-4-ylidene)malonitrile)-2-(2,3-dihydrothieno[3,4-b][1,4]dio
221 e transfer from diphenylamine was: 2-pyran-4-ylidene malononitrile (pyranone) > dicyanovinyl > bis(di
222               An analogue with the 2-pyran-4-ylidene malononitrile acceptor group exhibited a nearly
223 bipolar 2,7- and 3,6-disubstituted fluoren-9-ylidene malononitrile derivatives (4 and 9) is described
224 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile to yield a fused-ring electron acc
225 IC (2,7,12-tris((2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile-7-benzothiadiazole-2-)truxene) is
226 by attaching the 2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile-benzothiadiazole (BTIC) electron-d
227 ibution process between the 2-(3-oxo-indan-1-ylidene)-malononitrile-derived end-groups (EGs) of IDTT-
228 2-[1-aryl-5-imino-2-phenyl-1H-imidazol-4(5H)-ylidene]malononitriles 13 in 84-92% yields, while in MeO
229 -2-[2-phenyl-4-(arylimino)-1H-imidazol-5(4H)-ylidene]malononitriles 14 are formed in 85-94% yields.
230 featuring 2'-picolinyl-methyl-benzimidazol-2-ylidene (Mebim-pic) as a strong trans effect ligand and
231 76 (N-(2,3-diphenyl-1,2, 4-thiadiazol-5-(2H)-ylidene)methanamine), has been identified as an inhibito
232 on of several (4-chloro-5H-1,2,3-dithiazol-5-ylidene)methanes with DABCO failed to give {4-[N-(2-chlo
233 roethyl)piperazin-1-yl]-5H-1,2,3-dithiazol-5-ylidene}methanes, these can be prepared in moderate yiel
234 (2-ethoxy-2-oxoethyl)-2,4-dioxothiazolidin-5-ylidene)methyl )furan-2-yl)benzoic acid (1a) that exhibi
235 orting ligand, tris-[2-(3-mesityl-imidazol-2-ylidene)methyl]amine (TIMMN(Mes)), was developed and uti
236 o-6,7-dihydro-8H-[1,3]thiazolo[5,4-e]indol-8-ylidene)methyl]amino}-N-(2- pyridyl)benzenesulfonamide (
237 yl-cyclohexylmethyl)-2,4-dioxo-thiazolidin-5-ylidene-methyl]-phen yl}-4-nitro-3-trifluoro-methyl-benz
238 cyclic carbene (NHC) bis-(N-Dipp-imidazole-2-ylidene)methylene (abbreviated {((Dipp)C:)2CH2}) (Dipp =
239 yclic carbene) ligand bis(N-Dipp-imidazole-2-ylidene)methylene (bisNHC, 1) affords [(bisNHC)AlBr2](+)
240 ropenium tetrafluoroborate led to azetidin-2-ylidene methylphosphoniums as unexpected isomers, in 57-
241 pounds 9a and 9b and also two 1,3-dithiole-2-ylidene moieties are connected by a pi bridge to the ele
242 -free stable carbenes, especially imidazol-2-ylidenes [N-heterocyclic carbenes (NHCs)], has led to nu
243 bidentate ImPy (ImPy=imidazo[1,5-a]pyridin-3-ylidene) N,C ligands that feature hemilabile character o
244 ing a 6'-substituted (E)-2-(benzofuran-3(2H)-ylidene)-N-alkylacetamide skeleton is reported.
245 N-(3-methylamino-5,5-dimethyl-2-cyclohexen-1-ylidene)-N-methylaminium iodide (3a).
246 on of 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (NHC) with 2 resulted in N-C bond activation to
247 ing groups on the phenyl substituents on the ylidene of YNDs increased fragmentation rates.
248 )](OTf) (1) (IMes = 1,3-dimesitylimidazole-2-ylidene, OTf-triflate counteranion), resulting in a trig
249 for the construction of a C-C bond between 3-ylidene oxindoles and electron-rich arenes has been succ
250 ective Michael addition of nitroalkanes to 3-ylidene oxindoles is described, mediated by thiourea-bas
251                      A cascade reaction of 3-ylidene oxindoles with phenols and beta-naphthol resulte
252 3E)-5-((Z)-3,3-dimethyl-1-octadecylindolin-2-ylidene)penta-1,3-dien-1-yl)-3,3-dimethyl-1-octadecyl-3H
253 opyrazoles 1 and 3-(3-oxo-2-benzofuran-1(3H)-ylidene)pentane-2,4-dione (2).
254 s)CCC ((Mes)CCC = bis(mesityl-benzimidazol-2-ylidene)phenyl), is described.
255 P)CCC = bis(diisopropylphenyl-benzimidazol-2-ylidene)phenyl); X = Cl or Br) with halogen and halogen
256 tyl peroxide with N,N'-di-t-butyl-imidazol-2-ylidene phenylborane.
257 dition reaction of 1-(alkylsulfonyl)-3,5-bis(ylidene)-piperidin-4-ones 3a-h.
258 o-11H-benzo [5,6]cyclohepta[1,2-b]pyridin-11-ylidene)piperidine, Sch 44342, 1, with their chemical st
259 rbene 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (Pr(i)2NHCMe2) has been found to stabilize the f
260 le intermediate, N-(3-phenyl-1H-isochromen-1-ylidene)propan-1-amine.
261 conjugated unit 2-(3-amino-5-oxopyrrolidin-2-ylidene)propanoic acid.
262  the corresponding 4-N-(N-methylpyrrolidin-2-ylidene)-protected H-phosphonate monomer 7.
263 diisopropylphenyl]-1,3-dihydro-2H-imidazol-2-ylidene) provided only the alkene hydroarylation product
264 2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene] provides selective coupling at triflate.
265 IPr = 1,3-bis(diisopropyl)phenylimidazolin-2-ylidene; Py = pyridine; IPr = 1,3-bis(diisopropyl)phenyl
266 is(3,5-dimethylphenyl)-1H-benzo[d]imidazol-2-ylidene; py2-BMe2 = di(2-pyridyl)dimethylborate).
267                       The bis(arylimidazol-2-ylidene)pyridine cobalt methyl complex, ((iPr)CNC)CoCH3,
268 d definitive evidence for bis(arylimidazol-2-ylidene)pyridine radicals in reduced cobalt chemistry.
269 2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene; R = H, Me, gem-Me2, Ph] have been synthesized a
270 2)IMes = 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene; R = Ph, Me, H, CH=CMe(2)) triggers carbene inse
271 xes [R-iso-BIPY = N-(2-pyridyl)-R-pyridine-2-ylidene; (R = 4-H, 1; 4-tert-butyl, 2; 4-dimethylamino,
272  like the experimentally known 2H-imidazol-2-ylidene react with H(2) and ethylene with negligible or
273 Pr=1,3- bis(2,6-diisopropylphenyl)imidazol-2-ylidene) represent by far the most frequently used N-het
274 and IMe.H2BN3 (IMe = 2,6-dimethylimidazole-2-ylidene) reveals significant differences in the reactivi
275 vity of 1,3-dimesityl-4,5-dihydroimidazole-2-ylidene ruthenium carbene catalyst 3 significantly incre
276  Mebim-py = 3-methyl-1-pyridylbenzimidazol-2-ylidene; S = solvent) is a robust, reactive electrocatal
277 table pyrimidin-1,3-diium and pyrimidinium-2-ylidene salts.
278  The NHC complex (1-ethyl-3-methylimidazol-2-ylidene)silver(I) chloride is an ionic liquid, and was f
279 6-diisopropylphenyl)-4,5-dihydroimidazolin-2-ylidene (SIPr).
280  = N,N'-bis(2,6-diisopropylphenyl)imidazol-2-ylidene, SIPr = N,N'-bis(2,6-diisopropylphenyl)-4,5-dihy
281 talloporphyrins fused with the 1,3-dithiol-2-ylidene subunits present in tetrathiafulvalene, termed M
282 r = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) system presents the highest activity with respe
283 ed at the C-5 position, affording imidazol-5-ylidenes that could be isolated.
284 HC) 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene, the so-called IDipp, catalyzes hydrogen/deuteri
285 C 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene, the so-called SIMes, is inefficient for the sam
286  than imidazol-2-ylidenes and imidazolidin-2-ylidenes, the well-known N-heterocyclic carbenes (NHCs).
287 r = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) through activation of Pd(IPr)(eta(3)-allyl)Cl t
288 idene, IMe(4) (1,3,4,5-tetramethylimidazol-2-ylidene); Tipp=2,4,6-iPr(3) C(6) H(2) ; Ch=Se, Te) by tr
289 p=1,3-bis-(2,6-diisopropylphenyl)-imidazol-2-ylidene) to afford interlocked molecules via an inorgani
290 3,4-triphenyl-4,5-dihydro-1H-1,2,4-triazol-5-ylidene (TPT), and two representative acrylic monomers,
291 from three aldehydes catalyzed by imidazol-2-ylidene, triazol-3-ylidene, and thiazol-2-ylidene have b
292 nic carbene compounds of the 1,2,3-triazol-4-ylidene type that undergo C-N isomerization reactions.
293  of IMes-N2O (IMes = 1,3-dimesitylimidazol-2-ylidene) was explored in reactions with the complexes Cu
294  (IPr = 1,3-bis(diisopropylphenyl)imidazol-2-ylidene) was found to be a highly effective catalyst for
295 ) and the NHC (1,3-bis(cyclohexyl)imidazol-2-ylidene), which was proposed to act as a source of nucle
296 d(H)(OBz), 1 (IMes = 1,3-dimesitylimidazol-2-ylidene), which yields trans-(IMes) 2Pd(OOH)(OBz), 2.
297  physiologic conditions to yield a thiazol-2-ylidene, which is an N-heterocyclic carbene that has hig
298 = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) with ClMg{CH(SiMe3)2}.Et2O affords (IPr)Ni{CH(S
299 H2IMes = 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene) with ethylene was found to generate unidentifie
300 (2) = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene) with oxygen affords the pink eta(2)-O(2) hydrid
301 NHC = IMe(4) = 1,3,4,5-tetramethylimidazol-2-ylidene; X = (Cl or BArF = {(3,5-(CF(3))(2)C(6)H(5))(4)B

 
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