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2 be achieved keeping an ortho alkoxy group in unsymmetrical 1,2-dialkynylbenzene in the form of a cycl
4 nBr(2)-mediated regioselective annulation of unsymmetrical 1,2-diarylmethinedipivalates in DCM at roo
6 of terminal alkynes to give symmetrical and unsymmetrical 1,3-diynes in good to excellent yields and
9 r into both symmetrical (5a-c and 11a-c) and unsymmetrical (19a-e) bis-2,5-diketopiperazines (bis-2,5
10 A flexible route to both symmetrical and unsymmetrical 1H,8H-pyrrolo[3,2-g]indole has been develo
15 osine and 5-octadiynyl-2'-deoxycytidine with unsymmetrical 2,5-bis(azidomethyl)pyridine using copper(
16 ct arylation event furnishing symmetrical or unsymmetrical 2,5-diaryl selenophenes in good yield.
17 trate the divergent C-H functionalization of unsymmetrical 2-aryl cyclic 1,3-dicarbonyl compounds tha
18 ovel access to highly useful symmetrical and unsymmetrical 2-aryl substituted 1,4-diketone building b
19 roach was also extended for the synthesis of unsymmetrical 3,3'-bisimidazopyridinylmethanes under opt
21 e I porphyrins that utilizes the reaction of unsymmetrical 3,4-difunctionalized pyrroles and sterical
22 ing this method, a series of symmetrical and unsymmetrical 3,5-diarylpyridines were synthesized with
25 connectivity, the selective symmetrical and unsymmetrical 4,4"-functionalization (-CN, -Me, -CO2Me)
26 cient and high-yielding strategy to prepare "unsymmetrical" 4-aryl-isoxazol-3,5-dicarboxylic acid der
27 new 2,2'-bipyridine ligands, symmetrical and unsymmetrical 6,6'-binicotinates, and 2,2'-bipyridine-5-
28 DFT computations revealed formation of an unsymmetrical adduct of (TMP)Co-CH(OAc)CH3 (4) with *CH(
29 either formal hydrosilylation regioisomer of unsymmetrical aliphatic-substituted internal alkynes fro
30 The NMR data for 12a-l are consistent with unsymmetrical alkene bonding and polarization of the alk
34 ycloaddition with a range of symmetrical and unsymmetrical alkyne and alkene dipolarophiles to afford
35 by excellent levels of regioselectivity when unsymmetrical alkynes are used that carry an -OH or -NHR
41 hine followed by regioselective insertion of unsymmetrical alkynes to afford nonracemic 1,2-dihydroqu
42 lized ylides that undergo cycloaddition with unsymmetrical alkynes to give indolizidines with good re
44 bstrate scope with different symmetrical and unsymmetrical alkynes, affording the desired product in
45 oxy-2-alkynoates, as coupling partners, form unsymmetrical alkynes, which undergo lactonization after
48 bite angles and that nucleophilic attack on unsymmetrical allyl complexes with larger bite angle lig
49 larger bite angle ligands was faster than on unsymmetrical allyl complexes with smaller bite angle li
50 enzimidazole and imidazole nucleophiles with unsymmetrical allylic carbonates in the presence of sing
54 a precursor for the convenient synthesis of unsymmetrical alpha,alpha-diarylacetates featuring indol
57 These observations are made for a class of unsymmetrical amides that exhibits two asymmetric axes--
58 ccording to a two-site binding model, 28 new unsymmetrical analogues bearing a benzyl tail group and
62 ny need for purification, to produce various unsymmetrical and symmetrical tetraarylethylenes in exce
64 s the design, and synthesis of D-pi1-A-pi2-D unsymmetrical, and D-pi1-A-pi2-A-pi1-D symmetrical type
66 precedented ruthenium (Ru)-catalyzed twofold unsymmetrical annulation of 3-O/N-allyl benzoic acid der
68 stablished for the synthesis of novel hybrid unsymmetrical aryl chalcogenides with the aid of a catal
70 ipso-substitution of the iodonium moiety and unsymmetrical aryl(TMP)iodonium salts are primarily empl
71 purine nucleophiles, as well as a variety of unsymmetrical aryl, heteroaryl, and aliphatic allylic ca
73 better selectivity was also observed in the unsymmetrical aryl-aryl alkenes having an electron-withd
75 into regioselectivity trends in reactions of unsymmetrical arynes, which in turn has fueled advances
77 scope and is compatible with symmetrical and unsymmetrical azobenzene derivatives, with maleimides an
79 rocess involves 1,3-dipolar cycloaddition of unsymmetrical azomethine ylide resulting from the therma
80 l groups and allows the synthesis of diverse unsymmetrical azophenols under mild conditions in good t
81 -x)(PMe3)x(NO)]BF4, which are electronically unsymmetrical because of the presence of a single NO(+)
82 benzofurans, xanthenes, diaryl indoles, and unsymmetrical benzophenones by novel routes without appl
84 rnished highly oxygenated and functionalized unsymmetrical biaryls in good to excellent yields by the
85 facile synthetic access to a wide variety of unsymmetrical biaryls of pharmaceutical, agrochemical an
86 of arenediazonium salts in the synthesis of unsymmetrical biaryls, built around the seminal works of
87 ium metal in pure water leads to symmetrical/unsymmetrical biaryls, indicative of a net Kumada-like b
93 ns are scalable for preparing a long list of unsymmetrical biphenols assembled from a less reactive p
94 steric interactions between substituents of unsymmetrical bis(4-pyridyl)acetylene ligands dictate th
95 elimination from a series of electronically unsymmetrical bis-aryl complexes was not faster from com
96 OMe, CH(3), H, Cl, CF(3)) and electronically unsymmetrical bis-aryl platinum complexes (DPPF)Pt(C(6)H
97 ctionalized heteroarenes through challenging unsymmetrical bis-olefination process in a one-pot seque
102 s, we made predictions on the selectivity of unsymmetrical bispropargyl sulfones, amines, methanes, a
104 phic analysis of [3H]BF(4) revealed a highly unsymmetrical bridging hydride, the Fe-H bond being 0.40
105 re observed, the initial product again being unsymmetrical but more stable isomers being symmetrical.
106 le more weakly donating ligands give rise to unsymmetrical (C(4)) structures; the physical properties
112 ilities of one fluid into the other are very unsymmetrical, CO2 being highly soluble in the ionic liq
113 A series of sidearm analogues, including two unsymmetrical compounds, have also been prepared by modi
115 y supported Au nanoparticles proceeds via an unsymmetrical concerted transition state in which there
116 (-))(2) x 2 CH(3)CN published previously, an unsymmetrical conformation having one PD(+) ring syn and
117 omplex in which the substrate is fixed in an unsymmetrical conformation, with the amine terminal expo
118 these hybrid systems occurs through space in unsymmetrical conformations, where the center-to-center
119 abled facile access to either symmetrical or unsymmetrical conjugated diynes through homo-coupling or
122 esent the template-directed synthesis of two unsymmetrical cyclic porphyrin hexamers with both ethyne
125 udied as applied to diarylethenes containing unsymmetrical (cyclohexenone and cyclopentenone) and sym
127 elective transformations of the newly formed unsymmetrical dendralene derivatives are demonstrated.
128 exists as two isomers: a kinetically favored unsymmetrical derivative, unsym-[1(CO)](+), and a thermo
131 blem of the inability to use the enolates of unsymmetrical dialkyl ketones lacking alpha-branching fo
133 inhibitors resulted in the identification of unsymmetrical dialkyl-hydroxynaphthalenoyl-benzothiadiaz
135 beginning an oligomerization process whereby unsymmetrical dialkylchloronium ions decompose to alkyl
137 or C-C bond formation is described to access unsymmetrical diaryl acetamides under TM-free conditions
138 thod has been developed for the synthesis of unsymmetrical diaryl chalcogenides (S, Se, and Te) from
139 rbon-chalcogen bond-forming reaction to give unsymmetrical diaryl chalcogenides in trifluoroacetic ac
141 ading to a general route toward synthesis of unsymmetrical diaryl, aryl-alkyl, aryl-heteroaryl, and d
142 enide in PEG-600 in the second step produces unsymmetrical diaryl, diheteroaryl, or aryl-alkyl bis-se
143 lectron-rich arene or heteroarene ligands of unsymmetrical diaryl-lambda(3)-iodanes is a key step in
144 ficient, strategy has been devised to access unsymmetrical diarylacetamides with the possibility of t
145 on of this method to the direct synthesis of unsymmetrical diarylacetates featuring indoles and N-sub
146 oles were synthesized from 2-iodoaniline and unsymmetrical diarylacetylenes using the Larock heteroan
148 o-6-ethoxyphenol, respectively, with a novel unsymmetrical diaryliodonium salt, 2,3,4,5-tetrabromo-6-
151 reactions led to the construction of various unsymmetrical diarylmethane scaffolds, such as thiophene
152 mild conditions to provide a wide variety of unsymmetrical diarylmethanes and other 1,1-diarylalkane
153 tituted arenes is efficiently converted into unsymmetrical diarylmethanes with various arenes as nucl
154 vative is thermally stable, when heated, the unsymmetrical diborane(5) anion derived from 9-BBN is fo
157 be attributed to the surface activity of the unsymmetrical dications, which results in a concurrent s
159 eactions with several symmetrical as well as unsymmetrical dienophiles, these dendralenes afforded di
160 opodium alkaloid complanadine A, which is an unsymmetrical dimer of lycodine, was achieved by exploit
162 iously unreported flavomannin B (2), two new unsymmetrical dimers (3 and 4), and two new mixed dihydr
164 activity with symmetrical diols and hindered unsymmetrical diols, whereas a Cu/TEMPO catalyst system
166 we present a cobalt-catalyzed regioselective unsymmetrical dioxygenation of gem-difluoroalkenes using
168 elf-selective manner upon mixing 120 degrees unsymmetrical dipyridyl ligands with 60 degrees or 120 d
171 lyzed oxidative cross-coupling of alkynes to unsymmetrical diynes has been achieved for the first tim
176 ing group N-methoxyamine (NHOMe) assists the unsymmetrical double annulations of arenes [that use bot
178 The endo invertomer is favored, showing an unsymmetrical equilibrium in variable (1)H NMR studies.
179 mical calculations (CCSD(T)/ANO1) predict an unsymmetrical equilibrium structure for triplet MeC3Me (
180 otochromic diarylethenes (DAEs) based on the unsymmetrical ethene "bridge" bearing heterocycles of th
183 e of nonsubstitution on carbazolyl-N and the unsymmetrical framework of some of the derivatives is th
185 ectivities of (4 + 3) cycloadditions between unsymmetrical furans and a chiral oxazolidinone-substitu
188 egioselective reaction of the in situ formed unsymmetrical (hetero)aryl-lambda(3)-iodanes with a wide
190 on reactions with catecholborane to yield an unsymmetrical hydro(boryl)diborene and a 2,3-dihydrotetr
191 synthesis relied on the development of a new unsymmetrical IF-TTF building block by a combination of
192 th triphosgene affords highly functionalized unsymmetrical imidazo[4,5-b]pyridin-2-ones in just three
196 II) catalytic strategy for easy syntheses of unsymmetrical indolotriarylmethanes and new bisindolylbe
197 reaction was compatible with symmetrical and unsymmetrical internal alkenes as well as substituted su
198 nd enantioselective formal hydroamination of unsymmetrical internal alkenes catalyzed by a copper cat
199 -Cycloadditions of alkyl azides with various unsymmetrical internal alkynes in the presence of CpRuCl
201 A modular titanium-promoted coupling of unsymmetrical internal alkynes with Weinreb amides is de
203 PPh3 as the trapping ligand, we obtained an unsymmetrical isomer of Fe2(S2C2H4)(mu-CO)(CN)2(PPh3)2(C
204 udies of the photochromic characteristics of unsymmetrical isomeric 2,3-diarylcyclopent-2-en-1-ones h
205 A one-pot procedure for the synthesis of unsymmetrical ketones utilizing a pyrrole-bearing carbon
206 s been applied to the total synthesis of the unsymmetrical lignan lactone (-)-bursehernin and a medic
207 or both samples, which were found to obey an unsymmetrical log-normal distribution, typical for vapor
209 nd sterically equivalent, but electronically unsymmetrical, meta- and para-substituted diarylethynyls
212 The protocol allows for the synthesis of unsymmetrical N,N'-di- and N,N,N'-trisubstituted ureas i
214 ent and facile protocol for the synthesis of unsymmetrical N-alkyl-N'-aryl perylene diimides is repor
216 eophilic addition to p-benzynes derived from unsymmetrical N-substituted cyclic enediynes proceeds wi
220 mediates suggest that the resting states are unsymmetrical Ni(II)-biaryl and Ni(II)-bithiophene compl
223 ethodology is presented for the formation of unsymmetrical organotrisulfides in a high yield and puri
225 ing reactions with aryl bromides to generate unsymmetrical ortho-substituted biaryls in good to excel
226 opening reaction of various C(1)-substituted unsymmetrical oxabenzonorbornadienes (OBD) with oxime nu
231 namely, the flexible oligomer backbone, the unsymmetrical pendent immobilization motif of the cataly
232 that include dewetting of the pi bond and an unsymmetrical perepoxide transition state in the hydrope
235 assisted diboration of alkynamides using the unsymmetrical pinacolato-1,8-diaminonaphthalenato diboro
236 aforementioned results, seeded growth of the unsymmetrical PLLA BCPs PLLA42-b-P2VP240 or PLLA20-b-PAG
238 the anticipated symmetrical hydrodimers, an unsymmetrical product derived from the two coumarins.
240 -2X, has greatly improved performance for an unsymmetrical protonated epoxide, and we recommend this
241 nge of medicinally promising hydroxyarylated unsymmetrical pyridines in good to high chemical yields
242 nts in terms of regiochemical preferences in unsymmetrical rearrangement precursors and explained why
243 practical, one-pot synthesis of enantiopure unsymmetrical salen ligands is described, using a 1:1:1
244 more, the comparison with the mononucleating unsymmetrical salophen reference ligand H(2)carl(Cl) and
248 0-porphodimethenes, whereas the process with unsymmetrical selenophene-2,5-diols/tellurophene-2,5-dio
249 porphotrimethenes, whereas the process with unsymmetrical selenophene-2,5-diols/tellurophene-2,5-dio
252 anediols, including naphthyl-substituted and unsymmetrical siloxanes, has been quantified and compare
253 ed upon the controlled oxidative coupling of unsymmetrical silyl bis-enol ether intermediates, formed
255 alpha'-hydroxy silyl enol ethers to generate unsymmetrical silyloxyallyl cations that were subsequent
256 n dynamic, letter-shaped and compositionally unsymmetrical single rings, complex multi-ring systems,
260 gn and synthesis of two novel dications with unsymmetrical structures and their utilization for anion
262 s (4 and 5, R = 2,4,6-(i)Pr(3)C(6)H(2)) with unsymmetrical substitution patterns (including Si, SiR,
263 a for 7a,b,and 8a are consistent with highly unsymmetrical substrate coordination and substantial pol
265 selective and enantioselective silylation of unsymmetrical substrates was also achieved in the presen
270 antioselective Ti(IV)-catalyzed oxidation of unsymmetrical sulfides to sulfoxides with high selectivi
271 ion and the dynamics of the ring flip of the unsymmetrical t-CHP ring and the observed NMR shifts and
273 promoted by the oxidative electrocoupling of unsymmetrical tetra(hetero)arylborates (TABs) prepared f
275 termediates were applied to the synthesis of unsymmetrical tetrazines through Pd-catalyzed cross-coup
279 or the success of these reactions which form unsymmetrical tri- and tetrasubstituted cyclobutanes thr
281 so been demonstrated through construction of unsymmetrical triaroylbenzenes functionalized with only
282 lly and synthetically important indole-based unsymmetrical triarylmethanes using indoles and aldehyde
283 in the analogous methanesulfenyl cases, are unsymmetrical trigonal bipyramidal, with the nucleophile
286 (type I) transition structures (TSs), novel unsymmetrical TSs were found in which the Li is coordina
287 applied to the synthesis of (a)chiral bulky unsymmetrical unsaturated 2,6-diisopropylphenyl N-hetero
289 ep cyclization reaction involving amino acid unsymmetrical urea A and carboxy-imidazolyl-dipeptide es
290 versatile intermediates in the synthesis of unsymmetrical urea-linked disaccharides and trisaccharid
294 very convenient method for the synthesis of unsymmetrical ureas is described, based on isopropenyl c
296 satile intermediates for the construction of unsymmetrical ureas, carbamates, thiocarbamates and amid
297 erived auxiliary is a promising component of unsymmetrical variants, yet access remains limited.
299 (3), X = I (4), X = NO2 (5), X = CN (6)) and unsymmetrical (X = I, Y = MeO (7), Y = PhO (8)) para-dis
300 kynes (i.e., tolan and 3-hexyne) to give the unsymmetrical ziconacyclopentadienes Cp(2)Zr[2,4,5-Ph(3)