ライフサイエンスコーパス: Bu

1 Bu(3)SnH reduces DMF, but along with the low yields of B

2 Bud activity is regulated by diverse environmental and d

3 Bud BRC1 expression was not altered by exogenous ABA, co

4 Bud development was characterized using scanning electro

5 Bud emergence is essential for degradation of the mitoti

6 Bud formation by Saccharomyces cerevisiae must be coordi

7 Bud formation is delayed by knocking out single NRH gene

8 Bud hormone response was found to be qualitatively remar

9 Bud outgrowth is controlled by environmental and endogen

10 Bud sites are selected differently in haploid and diploi

11 Bud targeting required an intact actin cytoskeleton and

12 T state are generated via mixing of the "1(1)Bu(+)" ionic state and the lowest-lying "2(1)Ag(-)" cova

13 The resulting ICT state is primarily (1)Bu(+)-like in character and exhibits not only a large os

14 s obtained from the reaction of Pt(COD)2 and Bu(t)3SnH, followed by addition of CNBu(t).

15 ucts are obtained including (Bu(3)Sn)(2) and Bu(4)Sn.

16 radually for ULSD blended with DMC, DEA, and Bu, while they increased significantly for other fuel bl

17 sed when ULSD was blended with PME, DGM, and Bu.

18 tions between the glucocorticoid budesonide (Bud) and the Smo CRDs from both Drosophila and human.

19 due to steric effects imparted by the bulky Bu(t) groups that distort the geometry of the complex co

20 elphalan/alemtuzumab (n = 20), Flu/busulfan (Bu)/alemtuzumab (n = 8), and Flu/Bu/antithymocyte globul

21 tal-body irradiation (TBI) or with busulfan (Bu) are currently the most common myeloablative regimens

22 e (DMC), diethyl adipate (DEA), and butanol (Bu)) with ultralow sulfur diesel (ULSD) at 2% and 4% oxy

23 In total, five compounds [R = butyl (Bu), R = ethyl (Et), R = methoxymethyl (MeOMe), R = meth

24 The article by Bu and colleagues (1) introduces N-[2-(diethylamino)ethy

25 In this issue of Cell Stem Cell, Bu et al. (2013) find that miR-34a acts as a toggle swit

26 H2 CH2 NSiMe2 Bu(t) )2 CH2 CH2 NSi(Me)(CH2 )(Bu(t) )}] (6) produced the diuranium mu-phosphido comple

27 eactions were performed in a mixture of DMSO/Bu(t)OH (10/90 v/v) at 60 degrees C and catalysed by imm

28 u/busulfan (Bu)/alemtuzumab (n = 8), and Flu/Bu/antithymocyte globulin (n = 1).

29 of tetrabutylammonium hexafluorophosphate, [Bu(n)4N][PF6], to the THF solution promotes formation of

30 New 8-NR2-BODIPYs, R2 = H(i)Pr (3a), H(i)Bu (3b), and Et2 (4), are reported.

31 also be accessed, along with (SBI)Zr(III)-(i)Bu and [(SBI)Zr(III)](+) AlR4(-), when (SBI)ZrMe2 is all

32 enone and cobalticenium also is observed in [Bu(n)4N][PF6]/THF solutions.

33 ficant side products are obtained including (Bu(3)Sn)(2) and Bu(4)Sn.

34 (LFS) rate (+/- SD) was 61% +/- 2% after IV Bu/Cy and 64% +/- 2% after Cy/TBI (P = .27).

35 Engraftment rate was 98% and 99% after IV Bu/Cy and Cy/TBI, respectively.

36 In combination with Cy, IV Bu is associated with superior outcomes compared with TB

37 of intravenous busulfan and fludarabine (IV Bu/Flu) myeloablative conditioning as well as graft-vers

38 been no comparative trials in the era of IV Bu.

39 etween both groups, patients who received IV Bu/Cy had lower acute and chronic GVHD, higher RI, and a

40 ase (GVHD) was significantly lower in the IV Bu/Cy compared with Cy/TBI group (P < .001).

41 ronic GVHD was significantly lower in the IV Bu/Cy compared with Cy/TBI group (P = .003).

42 ard deviation [SD]) was 12% +/- 1% in the IV Bu/Cy group and 15% +/- 2% in the Cy/TBI group (P = .14)

43 es after myeloablative conditioning using IV Bu/Cy were not statistically different from those after

44 n be safely and effectively combined with IV Bu/Flu myeloablative conditioning and confirms PTCy's ef

45 Intravenous (IV) Bu has more predictable bioavailability and a safer toxi

46 ve and abundant potassium tert-butoxide (KOt-Bu) as the catalyst.

47 te a reactive peroxide by reaction with [KOt-Bu]4 as indicated by density functional theory (DFT) cal

48 Chinese herbal medicine Bu-Shen-Jiang-Ya decoction (BSJYD) is reported to be ben

49 (R = CH3 (2), CH2CH3 (3), (n)Pr (4), and (n)Bu (5)).

50 (R = H, CH3(unstable), CH2CH3, (n)Pr, and (n)Bu).

51 Alkyl Grignard reagents (Et, (n)Bu, (i)Pr, cyclohexyl), with the exception of (t)BuMgCl,

52 bis(dithiolene) complexes formulated as ([(n-Bu)4N][M(dm-dddt)2] (M = Au, Ni), which are isostructura

53 n of ferrocene (Fc(0/+)) in CH3CN (0.10 M (n-Bu)4NPF6) and reduction of [Ru(NH3)6](3+) and [Fe(CN)6](

54 h as MeI, TMSCl, MeSSMe, R3SnCl (R = Me or n-Bu), and PPh2Cl.

55 of copper-catalyzed "click" reaction and P(n-Bu)3-catalyzed esterification reaction as stoppering rea

56 NaOt-Bu was found to deprotonate the phenol product and to pr

57 Metal alkoxides, such as NaOt-Bu or Ti(OBu)4, can initiate acyl exchange within comple

58 n the catalytic reaction indicated that NaOt-Bu was necessary for catalysis, but kinetic analysis sho

59 th the low yields of Bu(3)SnOSnBu(3) (but no Bu(3)SnOCH(2)NMe(2)) significant side products are obtai

60 4=12-crown-4 ether) with [U{N(CH2 CH2 NSiMe2 Bu(t) )2 CH2 CH2 NSi(Me)(CH2 )(Bu(t) )}] (6) produced th

61 Pn(SiMe3 )2 }] [Tren(DMBS) =N(CH2 CH2 NSiMe2 Bu(t) )3 , An=U, Pn=P, As, Sb, Bi; An=Th, Pn=P, As; Tren

62 S) )(Cl)] [Zr1; Tren(DMBS) =N(CH2 CH2 NSiMe2 Bu(t) )3 ] with NaPH2 gave the terminal parent phosphani

63 Na(12C4)2 ] [7, Tren(DMBS) =N(CH2 CH2 NSiMe2 Bu(t) )3 ].

64 f exchange involves reductive elimination of Bu(t)3SnH from 1 to afford vacant sites on the Pt center

65 educes DMF, but along with the low yields of Bu(3)SnOSnBu(3) (but no Bu(3)SnOCH(2)NMe(2)) significant

66 of outcomes have been performed between oral Bu/Cy and Cy/TBI, but there have been no comparative tri

67 .003) in persons receiving IV, but not oral, Bu compared with TBI.

68 e recently reported four-shell Au133(SC6H4-p-Bu(t))52 nanocluster.

69 analogous complexes Pt(SnR3)2(CNBu(t))2 (R = Bu(t), Mes, Ph, or Pr(i)), only the Bu(t) analogue does

70 organoalkali metal reagents MR (M = Li, R = Bu(t); M = Na-Cs, R = CH2C6H5) afforded the imido-bridge

71 ntal design whereby a chiral substituent ((s)Bu) lifts the degeneracy of the resultant salts.

72 was treated with 2 equiv of KC8 and LiB(sec-Bu)3H to yield a deep blue-colored dicarbene zinc compou

73 Four Si(sec-Bu)3-ethynyl groups symmetrically attached to the acene

74 is relatively unstable and forms more stable Bu(+) and Bu3Sn(+) cations coordinated to the polyoxomet

75 The {Cr8 } metallacrown [CrF(O2 C(t) Bu)2 ]8 , containing a F-lined internal cavity, shows hi

76 of heterometallic [Cat][Tix MO(x+1 )(O2 C(t) Bu)2x+2 ] rings is reported where Cat=a secondary or ter

77 y-product is found [Cat][Tix O(x+1 )(O2 C(t) Bu)2x-1 ].

78 ond, similar to Bergman's seminal Cp*Ir(N(t) Bu) imido complex.

79 silylene borane 1 (LSi-R-BMes2 ; L=PhC(N(t) Bu)2 ; R=1,12-xanthendiyl spacer; Mes=2,4,6-Me3 C6 H2 ),

80 a monometallic dysprosium complex, [Dy(O(t) Bu)2 (py)5 ][BPh4 ] (5), that shows the largest effectiv

81 nt from the previously reported Au30 S(S-(t) Bu)18 nanocluster protected by 18 tert-butylthiolate lig

82 e), and Cp*U((t)Bu-(Mes)PDI(Me)) (THF) (1-(t)Bu) (2,6-((Mes)N horizontal lineCMe)2-p-R-C5H2N, Mes = 2

83 PA), and Cp*U((t)Bu-(Mes)PDI(Me))(THF) (1-(t)Bu).

84 t-butyl-substituted analogue, Cp*U(NTol)2((t)Bu-(Mes)PDI(Me)) (3-(t)Bu), displays the same electronic

85 )PDI(Me))][SbF6] (4-Cp*) and [Cp*U(NTol)2((t)Bu-(Mes)PDI(Me))][SbF6] (4-(t)Bu), respectively, as conf

86 dride complexes [((t)Bu-PNP*)Ir(H)2] (2) ((t)Bu-PNP*, deprotonated (t)Bu-PNP ligand) and [((t)Bu-PNP)

87 Os), [R(1)R(2)P(O)H] (R(1) = Naph, R(2) = (t)Bu, L1; R(1) = R(2) = Ph, L2; R(1) = Ph, R(2) = Naph, L3

88 , L4; R(1) = R(2) = Cy, L5; R(1) = R(2) = (t)Bu, L6), with different electronic and steric properties

89 e; (Mes)PDI(Me) = 2,6-((Mes)N=CMe)2C5H3N; (t)Bu-(Mes)PDI(Me) = 2,6-((Mes)N=CMe)2-p-C(CH3)3C5H2N; Mes

90 e alkylbenzene derivatives (R)-PhCH(CH(3))(t)Bu (1) and (R)-PhCH(CH(3))(i)Pr (2) were taken as paradi

91 phenyl; R = H, (Mes)PDI(Me); R = C(CH3)3, (t)Bu-(Mes)PDI(Me)), has been investigated.

92 tion of the ligand radical in 3-Cp* and 3-(t)Bu by Ag(I) forms cationic uranium(VI) [Cp*U(NTol)2((Mes

93 Treating 3 or 3-(t)Bu with stoichiometric equivalents of Me3SiI results in

94 e)) (3) and Cp*UO2((t)Bu-(Mes)PDI(Me)) (3-(t)Bu) (Cp* = 1,2,3,4,5-pentamethylcyclopentadienide; (Mes)

95 logue, Cp*U(NTol)2((t)Bu-(Mes)PDI(Me)) (3-(t)Bu), displays the same electronic structure.

96 tructural parameters of 1-Cp(P), 3-Cp*, 3-(t)Bu, 4-Cp*, 4-(t)Bu, and 5-Cp* have been elucidated by X-

97 Cp*U(NTol)2((t)Bu-(Mes)PDI(Me))][SbF6] (4-(t)Bu), respectively, as confirmed by metrical parameters.

98 reviously reported ((Ar)L)FeCl((*)NC6H4-4-(t)Bu), the monomeric iron imido is best described as a hig

99 eaction of 3 equiv of Li-C6H3-2,6-(C6H4-4-(t)Bu)2 (Terph-Li) with UI3(1,4-dioxane)1.5 led to the form

100 ters of 1-Cp(P), 3-Cp*, 3-(t)Bu, 4-Cp*, 4-(t)Bu, and 5-Cp* have been elucidated by X-ray crystallogra

101 (5) or (Me3SiO)UI2((t)Bu-(Mes)PDI(Me)) (5-(t)Bu), respectively.

102 In contrast, the homogeneous analogue (t)Bu(L-PdTFA) is an ineffective catalyst owing to decompos

103 4], with Cp(ttt) = {C5H2(t)Bu3-1,2,4} and (t)Bu = C(CH3)3-which exhibits magnetic hysteresis at tempe

104 multaneous deprotections with the Boc and (t)Bu groups.

105 NP*, deprotonated (t)Bu-PNP ligand) and [((t)Bu-PNP)Ir(H)] (3) react with CO2 to give the dearomatize

106 ]N)3VN-PC2(SiMe3)2 (7) or phosphirane (Ar[(t)Bu]N)3VN-P(C8H16) (8) compounds are generated.

107 -4-octene, the respective phosphirene (Ar[(t)Bu]N)3VN-PC2(SiMe3)2 (7) or phosphirane (Ar[(t)Bu]N)3VN-

108 al withNH(Ntolyl2) ((tBu)nacnac(-) = [ArNC(t)Bu]2CH; Ar = 2,6-(i)Pr2C6H3) with KCH2Ph forms a rare ex

109 t-butylethylene, dissociate to ArSnCH2CH2(t)Bu monomers in solution.

110 as various OH protecting groups, such as (t)Bu and Bzl.

111 alkyl aryl ethers R-OAr employing (t)BuOO(t)Bu as oxidant with copper(I) beta-diketiminato catalysts

112 ination takes place, however, when (t)BuOO(t)Bu is used, which allows for HAA of R-H to occur from th

113 ated upon reaction of [Cu(I)] with (t)BuOO(t)Bu.

114 rated by reaction of [Cl2NN]Cu and (t)BuOO(t)Bu.

115 of general formula [Cat][M(7)M'F(8)(O(2)C(t)Bu)(8)] (M = a trivalent metal, M' = a divalent metal, c

116 d alkynylgold(III) complex, [Au((t)BuC^N^C(t)Bu)(C identical withC-C6H4N(C6H5)2-p)] ((t)BuHC^N^CH(t)B

117 tical withC-C6H4N(C6H5)2-p)] ((t)BuHC^N^CH(t)Bu = 2,6-bis(4-tert-butylphenyl)pyridine), has been synt

118 ned with the alkylidene complex (PNP)Ti=CH(t)Bu(CH3) (PNP=N[2-P(CHMe2)2-4-methylphenyl]2(-)), catalys

119 )Bu) or (PNP)Ti horizontal lineCH(t)Bu(CH2(t)Bu) (PNP(-) = N[2-P(CHMe2)2-4-methylphenyl]2) reacts wit

120 (PNP)Ti(eta(2)-H2C horizontal lineCH2)(CH2(t)Bu) or (PNP)Ti horizontal lineCH(t)Bu(CH2(t)Bu) (PNP(-)

121 alkyl species ( identical withSiO-)MoO(CH2(t)Bu)3 was selectively prepared by grafting of MoO(CH2(t)B

122 electively prepared by grafting of MoO(CH2(t)Bu)3Cl onto partially dehydroxylated silica (silica700)

123 (PNP)Ti(eta(2)-H2C horizontal lineCH2)(CH2(t)Bu)] (1).

124 eta(2)-H2C horizontal lineCH(n)Pentyl)(CH2(t)Bu)] (6) and [(PNP)Ti(eta(2)-H2C horizontal lineCH(n)Hex

125 (eta(2)-H2C horizontal lineCH(n)Hexyl)(CH2(t)Bu)] (7), respectively, but these species are unstable b

126 (PNP)Ti(eta(2)-H2C horizontal lineCHR)(CH2(t)Bu)] (R = CH3 (2), CH2CH3 (3), (n)Pr (4), and (n)Bu (5))

127 ethylene (1 atm) can trap the [(PNP)Ti(CH2(t)Bu)] fragment to form 1.

128 The bulkier distannenes [ArSn(CH2CH2(t)Bu)]2 (Ar = Ar((i)Pr6) (5a) or Ar((i)Pr4) (5b)), obtaine

129 rido bridged Ar((i)Pr4)S n(mu-H)S n(CH2CH2(t)Bu)Ar((i)Pr4) (6b).

130 as the structure Ar((i)Pr6)Sn-Sn(H)(CH2CH2(t)Bu)Ar((i)Pr6) (6a) or the monohydrido bridged Ar((i)Pr4)

131 th CO2 to give the dearomatized complex [((t)Bu-PNP*)Ir(CO)] (4) and water.

132 The novel Ir hydride complexes [((t)Bu-PNP*)Ir(H)2] (2) ((t)Bu-PNP*, deprotonated (t)Bu-PNP

133 NP*)Ir(H)2] (2) ((t)Bu-PNP*, deprotonated (t)Bu-PNP ligand) and [((t)Bu-PNP)Ir(H)] (3) react with CO2

134 nylporphyrin (TPP)) and 1(P2) (P2 = 3,5-Di(t)Bu-ChenPhyrin) with organic azides 2(Ns) (NsN3), 2(Ts) (

135 2h)-symmetric amidoporphyrin ligand 3,5-Di(t)Bu-IbuPhyrin, the cobalt(II)-catalyzed C-H amination pro

136 D2-symmetric chiral amidoporphyrin 3,5-Di(t)Bu-QingPhyrin has been identified as an effective metall

137 f D2-symmetric chiral porphyrin [Co(3,5-Di(t)Bu-Xu(2'-Naph)Phyrin)] is an efficient metalloradical ca

138 Cp*(Cl)Ti(N,N-di-(t)Bu-eta(1),eta(2)-diimine) (2), in the presence of pyridi

139 Thus, I(t)Bu is the most active catalyst of the series and convert

140 e to protonate the platinum hydride [PtH(I(t)Bu')(I(t)Bu)] releasing H2, the amino borane H2B-NMe2 an

141 to yield a platinum-hydride complex [PtH(I(t)Bu')(I(t)Bu)] with concomitant formation of the boronium

142 inatively unsaturated Pt(II) complex [Pt(I(t)Bu')(I(t)Bu)](+) stabilized by N-heterocyclic carbene (N

143 , 1,3-di-tert-butylimidazolin-2-ylidene (I(t)Bu), 1,3-dimesitylimidazolin-2-ylidene (IMes), and 1,3,4

144 onate the platinum hydride [PtH(I(t)Bu')(I(t)Bu)] releasing H2, the amino borane H2B-NMe2 and regener

145 a platinum-hydride complex [PtH(I(t)Bu')(I(t)Bu)] with concomitant formation of the boronium cation [

146 unsaturated Pt(II) complex [Pt(I(t)Bu')(I(t)Bu)](+) stabilized by N-heterocyclic carbene (NHC) ligan

147 The tert-butyl-substituted complex [(I(t)Bu)Fe(N'')2] (4) undergoes a thermal decomposition that

148 The I(t)Bu-catalyzed MMBL polymerization reaches an exceptionall

149 l-to-tail) by TPT, and polymerization by I(t)Bu.

150 70-85 kg/mol, regardless of the [MMBL]/[I(t)Bu] ratio employed.

151 OO)Ir(H)2] (5), and a di-CO2 iridacycle [((t)Bu-PNP)Ir(H)(C2O4-kappaC,O)] (6).

152 is used in place of Ni(COD)2/SIPr.HBF4/KO(t)Bu (COD = 1,5-cyclooctadiene) as a more robust catalyst

153 The reaction utilizes KO(t)Bu as an initiator and likely proceeds by a radical anio

154 opropyl-N-alkylbenzamide substrates and KO(t)Bu by the selective C-C coupling of an unreactive tertia

155 Although catalytic KO(t)Bu in DMSO is sufficient to allow imine generation, stoi

156 We also present reasons why KO(t)Bu is an active catalyst whereas sodium tert-butoxide an

157 allow imine generation, stoichiometric KO(t)Bu is essential in THF.

158 The unique role of KO(t)Bu is traced, in part, to the stabilization of crucial i

159 of organic additives in the presence of KO(t)Bu or NaO(t)Bu since the first report in 2008.

160 n of unactivated arenes with ArX, base (KO(t)Bu or NaO(t)Bu), and an organic additive at high tempera

161 Tf = CF3SO3) undergo deprotonation with KO(t)Bu to afford the trans-halide-alkylidyne square-planar d

162 The reaction appears to proceed through KO(t)Bu-promoted intramolecular homolytic aromatic substituti

163 eutral heterolytic route involving the [KO(t)Bu]4 tetramer.

164 as a directing metalation group via N...Li(t)Bu coordination.

165 H2)(CH2(t)Bu) or (PNP)Ti horizontal lineCH(t)Bu(CH2(t)Bu) (PNP(-) = N[2-P(CHMe2)2-4-methylphenyl]2) r

166 By treatment of (PNP)Ti horizontal lineCH(t)Bu(OTf) with LiCH2PPh2, 1 or its isotopologue (PNP)Ti ho

167 y prepared from [(PNP)Ti horizontal lineCH(t)Bu(OTf)] and the corresponding alkylating reagents, LiCH

168 diphenyl-4-MeC6H2)](H)( horizontal lineGeH(t)Bu) (8) was prepared from reaction of (t)BuGeH3 with the

169 erminal nitrene [Cl2NN]Cu horizontal lineN(t)Bu is the active intermediate in C-H amination.

170 e reaction in the order Me < Et < (i)Pr < (t)Bu.

171 h CO2 is bound to the ligand and metal, [((t)Bu-PNP-COO)Ir(H)2] (5), and a di-CO2 iridacycle [((t)Bu-

172 Pd-Ti distance in 1 is the result of the N(t)Bu groups enforcing a boat conformation that brings the

173 ation of ethylbenzene by {[Cl2NN]Cu}2(mu-N(t)Bu) (3) demonstrate that the terminal nitrene [Cl2NN]Cu

174 Cl bonding interactions in [PPh(4)](2)[U(N(t)Bu)(2)Cl(4)] and [PPh(4)](2)[UO(2)Cl(4)].

175 ence of pyridine, fragments to Cp*(Cl)Ti(N(t)Bu)(NC5H5) (10) and an alpha-methylene cyclopent-3-enimi

176 etallic niobium arene complexes [Nb(BDI)(N(t)Bu)(R-C(6)H(5))] (2a: R = H and 2b: R = Me, BDI = N,N'-d

177 terocyclic chlorosilylene LSiCl (L = PhC(N(t)Bu)2) 2 to give, via Me3P elimination, the corresponding

178 ntrolled fluorination of LMNMe2 (L = PhC(N(t)Bu)2, M = Ge, Sn) using HF.pyridine in toluene leads to

179 erted arene sandwich complexes [[(BDI)Nb(N(t)Bu)](2)(mu-RC(6)H(5))] (7a: R = H and 7b: R = Me) in sol

180 nd the dicationic complex 9 [[(BDI(#))Nb(N(t)Bu)](2)(mu-RC(6)H(5))][B(C(6)F(5))(4)](2) (BDI(#) = (ArN

181 complex 8 [[(BDI(#))Nb(N(t)Bu)][(BDI)Nb(N(t)Bu)](mu-C(6)H(5))][B(C(6)F(5))(4)] and the dicationic co

182 ves the BDI ligand to yield {[(BDI(#))Nb(N(t)Bu)]2(mu-eta(3):eta(3)P4)}[B(C6F5)4]2 (4).

183 inverted sandwich complex 8 [[(BDI(#))Nb(N(t)Bu)][(BDI)Nb(N(t)Bu)](mu-C(6)H(5))][B(C(6)F(5))(4)] and

184 dging cyclo-P4 phosphide species {[(BDI)(N(t)Bu)M]2(mu-eta(3):eta(3)P4)} (1, M = Nb; 2, M = Ta) in fa

185 nthesized upon hydrogenolysis of (BDI)Nb(N(t)Bu)Me2 in the presence of P4.

186 onocation and dication analogues {[(BDI)(N(t)Bu)Nb]2(mu-eta(3):eta(3)P4)}{B(Ar(F))4}n (5, n = 1; 6, n

187 atomic molecule PN, P identical withN-V(N[(t)Bu]Ar)3 (1, Ar = 3,5-Me2C6H3), we report the use of ClPA

188 i-1,8-naphthalene disulfide), NapS2P-NV(N[(t)Bu]Ar)3 (6) is instead generated in 80% yield, suggestin

189 hosphorus(I) in its reaction with Na[NV(N[(t)Bu]Ar)3] (Na[4]) to yield trimeric cyclo-triphosphane [P

190 , 3 readily fragments into dimeric [PNV(N[(t)Bu]Ar)3]2 (2), while in the presence of bis(trimethylsil

191 yield trimeric cyclo-triphosphane [PNV(N[(t)Bu]Ar)3]3 (3) with a core composed exclusively of phosph

192 dditives in the presence of KO(t)Bu or NaO(t)Bu since the first report in 2008.

193 ated arenes with ArX, base (KO(t)Bu or NaO(t)Bu), and an organic additive at high temperatures.

194 The trinuclear side product {[(BDI)NbN(t)Bu]3(mu-P12)} (3) is also identified.

195 )Ni(II)(S)] (L(tBu) = {(2,6-(i)Pr2C6H3)NC((t)Bu)}2CH), with the biologically important small molecule

196 iBr in the presence of a donor (PPh3 or NC(t)Bu) leads to the title complexes, which feature a rare n

197 H6 ((tbs)LH6 = 1,3,5-C6H9(NHC6H4-o-NHSiMe2(t)Bu)3) with divalent transition metal starting materials

198 ns between copper(II) alkoxides [Cu(II)]-O(t)Bu and B(C6F5)3.

199 ansesterification of AcOAr with [Cu(II)]-O(t)Bu intermediates generated upon reaction of [Cu(I)] with

200 OSi(O(t)Bu)3)3.L with L = (THF)2 or HOSi(O(t)Bu)3 for M = Cr, Yb, Eu, and Y, by a combination of adva

201 e neutral U(III) siloxide complex [U(OSi(O(t)Bu)3)2(mu-OSi(O(t)Bu)3)]2 1 with adamantyl azide leads t

202 s were synthesized from grafting [Cr(OSi(O(t)Bu)3)3(tetrahydrofurano)2] on silica partially dehydroxy

203 amides M(N(SiMe3)2)3 vs siloxides (M(OSi(O(t)Bu)3)3.L with L = (THF)2 or HOSi(O(t)Bu)3 for M = Cr, Yb

204 he diuranium(IV) complex Cs{(mu-N)[U(OSi(O(t)Bu)3)3]2} 9 presenting a nitrido ligand bridging two ura

205 ear uranium(IV) carbonate complex [U(OSi(O(t)Bu)3)4(mu-kappa(2):kappa(1)-CO3)K2(18c6)], 4.

206 ptic ate U(III) siloxide [K(18c6)][U(OSi(O(t)Bu)3)4] 2 was prepared in 69% yield by reduction of [U(O

207 ared in 69% yield by reduction of [U(OSi(O(t)Bu)3)4] 3 with KC8.

208 uclear U(VI) imido complex [U2(NAd)4(OSi(O(t)Bu)3)4] 4.

209 t)Bu)3)4] 5-TMS and [K(18c6)][U(NAd)(OSi(O(t)Bu)3)4] 5-Ad pure in 48% and 66% yield, respectively.

210 imido complexes [K(18c6)][U(NSiMe3)(OSi(O(t)Bu)3)4] 5-TMS and [K(18c6)][U(NAd)(OSi(O(t)Bu)3)4] 5-Ad

211 azido U(IV) complex [K(18c6)][U(N3)(OSi(O(t)Bu)3)4] 7 and the mu-nitrido diuranium(V) complex [KU(mu

212 ly, the ion pair complex [K(18c6)][U(OSi(O(t)Bu)3)4], 1, promotes the selective reductive disproporti

213 ast, the heterobimetallic complex [U(OSi(O(t)Bu)3)4K], 2, promotes the potassium-assisted two-electro

214 nd the U(V) terminal oxo complex [UO(OSi(O(t)Bu)3)4K], 3, thus providing a remarkable example of two-

215 iloxide complex [U(OSi(O(t)Bu)3)2(mu-OSi(O(t)Bu)3)]2 1 with adamantyl azide leads to the isolation of

216 trido diuranium(V) complex [KU(mu-N)(OSi(O(t)Bu)3)]2 8 were isolated.

217 unds of general formula [Cr7MF3(Etglu)(O2C(t)Bu)15(Phpy)] [H5Etglu = N-ethyl-d-glucamine; Phpy = 4-ph

218 re heterometallic octanuclear [Cr7NiF8(O2C(t)Bu)16](-) coordination cages and the thread components t

219 lt(II) bis(pivalate) 4-Me-((iPr)PNP)Co(O2C(t)Bu)2 (2) compounds were effective and exhibited broad fu

220 -inspired [Ru(bpy)2(phen-imidazole-Ph(OH)((t)Bu)2)](2+), in which Ru(III) generated by a flash-quench

221 [((tBu)4)(POCOP) = kappa(3)-C6H3-2,6-(OP((t)Bu)2)2] complexes results in observation of two new irid

222 This iron complex, Cp(C(6)F(5))Fe(P((t)Bu)(2)N(Bn)(2))(H), has pendent amines in the diphosphin

223 omplexes resulted in the selection of Pd(P(t)Bu(3))(2) to effect this transformation with good to exc

224 ed iminyl radical ((Ar)L)FeCl((*)N(C6H4-p-(t)Bu)) (2) with potassium graphite furnished the correspon

225 spin (S = (5)/2) imido ((Ar)L)Fe(N(C6H4-p-(t)Bu)) (3) ((Ar)L = 5-mesityl-1,9-(2,4,6-Ph3C6H2)dipyrrin)

226 lohexyl) and Au28(SPh-(t)Bu)20 (where -Ph-(t)Bu = 4-tert-butylphenyl).

227 h dialkylhalophosphines R2PCl (Cy, (i)Pr, (t)Bu) at ambient temperature yield the first tetrel Zintl

228 sp(2)P)Ir(I)Cl complexes 2(R) (R = (i)Pr, (t)Bu) with cesium hydroxide in THF leads to the correspond

229 ve eta(1),eta(2)-diimine complexes 2 (R = (t)Bu) and 3 (R = 1-adamantyl).

230 a triplet ((3)JHP = 3.8 Hz) at 4.22 (R = (t)Bu) and 4.31 (R = (i)Pr) ppm that broadens in the presen

231 nt yields of 70% (R = (i)Pr) and 92% (R = (t)Bu).

232 from U(NR)(2)I(2)(THF)(x) (x = 2 and R = (t)Bu, Ph; x = 3 and R = Me) upon addition of excess halide

233 acemic-tert-butyl 3,4-epoxybutanoate (rac-(t)Bu 3,4-EB) and CO2 using bifunctional cobalt(III) salen

234 nonitrosyl iron complex (MNIC), (PPN)[Fe(S(t)Bu)3(NO)] (1), is converted to a [2Fe-2S] cluster, (PPN)

235 u(NO) and the unsymmetrical disulfide RS-S(t)Bu.

236 where -c-C6H11 = cyclohexyl) and Au28(SPh-(t)Bu)20 (where -Ph-(t)Bu = 4-tert-butylphenyl).

237 5-pentamethylcyclopentadienide), and Cp*U((t)Bu-(Mes)PDI(Me)) (THF) (1-(t)Bu) (2,6-((Mes)N horizontal

238 *U((Mes)PDI(Me))(HMPA) (1-HMPA), and Cp*U((t)Bu-(Mes)PDI(Me))(THF) (1-(t)Bu).

239 SiO)2UI2((Mes)PDI(Me)) (5) or (Me3SiO)UI2((t)Bu-(Mes)PDI(Me)) (5-(t)Bu), respectively.

240 unds, Cp*UO2((Mes)PDI(Me)) (3) and Cp*UO2((t)Bu-(Mes)PDI(Me)) (3-(t)Bu) (Cp* = 1,2,3,4,5-pentamethylc

241 en alkylidyne [(t)BuOCO]W identical withC((t)Bu) (THF)2 (1) reacts with CO2, leading to complete clea

242 m neopentylidyne, [(PNP)Ti identical withC(t)Bu] (A; PNP(-) identical withN[2-P(i)Pr2-4-methylphenyl]

243 here, [Ni(P(Cy)2N(t-Bu)2)2](BF4)2 (P(Cy)2N(t-Bu)2 = 1,5-di(tert-butyl)-3,7-dicyclohexyl-1,5-diaza-3,7

244 energy of hydrogen addition to [Ni(P(Cy)2N(t-Bu)2)2](2+) was determined to be -7.9 kcal mol(-1).

245 he second coordination sphere, [Ni(P(Cy)2N(t-Bu)2)2](BF4)2 (P(Cy)2N(t-Bu)2 = 1,5-di(tert-butyl)-3,7-d

246 oubly protonated Ni(0) complex [Ni(P(Cy)2N(t-Bu)2H)2](BF4)2.

247 ed or generated in situ from Pd(2)(dba)(3)/t-Bu(3)P/ArI (dba = dibenzylideneacetone) without separati

248 1 with P(t-Bu)3 affords the zwitterion 3-(t-Bu)3PC14H7O2B(C6F5)2 (5) in addition to the salt [HP(t-B

249 he reaction of [Cp'''2Sm] (Cp''' = (1,2,4-(t-Bu)3C5H2)) with As4S4 and the reaction of [Cp*2Yb(thf)2]

250 ining the aryl substituents, 4-CF3, 4-F, 4-t-Bu, 4-hexoxy, 4-OMe, exhibit well-resolved (1)H NMR spec

251 allographic structures of Pd(TNpP)2, [Pd(4-t-Bu-C6H4)(TNpP)(mu-Br)]2, and [Pd(2-Me-C6H4)(TNpP)(mu-Br)

252 yield 3-(R2PH)C16H7O2B(C6F5)2 (R = Ph (9), t-Bu (10)).

253 ArPd(t-Bu(3)P)I complexes, either prepurified or generated in s

254 tungsten oxo alkylidene catalyst, W(O)(CH-t-Bu)(OHMT)(Me2Pyr) (OHMT = 2,6-dimesitylphenoxide; Me2Pyr

255 ctene (3MCOE) as monomers and W(N-t-Bu)(CH-t-Bu)(OHMT)(Pyr) (OHMT = hexamethylterphenoxide, Pyr = pyr

256 l lineO)CH3, CH2C identical withCCH3, CH2O-t-Bu, CH2CF3, CH2F, CHF2) was synthesized either by photol

257 ex, (PCP)Ir (PCP = kappa(3)-C6H3-2,6-[CH2P(t-Bu)2]2), is found to undergo oxidative addition of C(sp(

258 tes bearing a variety of substituents (CO2-t-Bu, COMe, Ph, CH(OEt)2, and Me) undergo high-yielding ad

259 H2C horizontal lineC horizontal lineCH(COO-t-Bu) with enynal undergoes decarboxylation under the [Au]

260 fficient alternatives to the corresponding t-Bu-PHOX systems.

261 labeled ADM analogues synthesized by Fmoc/t-Bu solid phase peptide synthesis were used to analyze th

262 horizontal lineO > dicyclopropyl ketone > t-Bu-C( horizontal lineO)-Ph > diisopropyl ketone >> t-Bu2

263 of cyclopropanecarbaldehyde > acetone >/= t-Bu-CH horizontal lineO.

264 O2B(C6F5)2 (5) in addition to the salt [HP(t-Bu)3][C14H8O2B(C6F5)2] (6).

265 The solution basicity of the well-known t-Bu-N horizontal lineP4(dma)9 phosphazene superbase is no

266 2)Pd(0) and L(2)Pd(II) complexes, where L= t-Bu(2)(p-NMe(2)C(6)H(4))P, have been identified as effici

267 is-cyclooctene (3MCOE) as monomers and W(N-t-Bu)(CH-t-Bu)(OHMT)(Pyr) (OHMT = hexamethylterphenoxide,

268 gen atom transfer (OAT) to the complex V(N[t-Bu]Ar)3 (Ar = 3,5-C6H3Me2, 1) from compounds containing

269 w that the V-O bond in O identical withV(N[t-Bu]Ar)3 is strong (BDE = 154 +/- 3 kcal mol(-1)) compare

270 wly established PdCl(2)(MeCN)(2)/Xphos/NaO-t-Bu/F-benzene system in a sealed tube is compatible with

271 [Ar2N3]Mo(N)(O-t-Bu) serves as a catalyst or precursor for the catalytic

272 [Ar2N3]Mo(N)(O-t-Bu), which contains the conformationally rigid pyridine-

273 iastereoselectivities of C-H activation of t-Bu- and i-Pr-substituted oxazolines provided good agreem

274 stem 1/p-X-C6H4OH (rho = -3.3 for X = OMe, t-Bu, Et, and Me; rho = +1.5 for X = F, Cl, and CF3).

275 -stable palladacyclic complex containing P(t-Bu)2Cy as ligand.

276 Reaction of 1 with P(t-Bu)3 affords the zwitterion 3-(t-Bu)3PC14H7O2B(C6F5)2 (5

277 known phosphine electron donors such as P(t-Bu)3 and PCy3.

278 Experimentally, the use of the Pd/P(t-Bu)3 catalytic system leads to a ca. 7:3 mixture of olef

279 highly reactive dimeric Pd(I) complex {[P(t-Bu)3]PdBr}2.

280 -stable palladacyclic complex containing P(t-Bu)Cy2 as ligand.

281 .0 degrees ) structure of the analogous Pd(t-Bu(3)P)(2).

282 formula Mo(NR)(CHR')(OR'')(Cl)(MeCN) (R = t-Bu or 1-adamantyl; OR'' = a 2,6-terphenoxide) recently h

283 For the more stable silanone 2b (R = t-Bu), a selective transformation to the first reported ro

284 with the general formula Ph2P(O)CH2SR (R = t-Bu, Cy, p-MeOPh, 2,6-di-ClPh, and 2,6-di-MePh) were easi

285 type Tp'Rh(PMe3)(C identical withCR)H (R = t-Bu, SiMe3, hexyl, CF3, Ph, p-MeOC6H4, and p-CF3C6H4).

286 lexes (R3P)Au-SiR'Ph2 (R = Ph, Me and R' = t-Bu, Ph).

287 With (S)-t-Bu-PyOX as the chiral ligand, this method delivers a var

288 Both enantiomers of Au30S(S-t-Bu)18 are found in the crystal unit cell.

289 Au30S(S-t-Bu)18 cluster, related closely to the recently isolated

290 ntly isolated "green gold" compound Au30(S-t-Bu)18, has been structurally solved via single-crystal X

291 (-1).K(-1) for the reaction of (Ph3P)Au-Si(t-Bu)Ph2 with methyl propiolate], in line with a bimolecul

292 ter formulated as Au20(TBBT)16 (TBBT = SPh-t-Bu).

293 the core of the recently reported Au28(SPh-t-Bu)20.

294 rs a close resemblance to that of Au28(SPh-t-Bu)20.

295 Among the different S-groups studied, t-Bu derivative was the best performer for the synthesis o

296 primarily by steric repulsions between the t-Bu group of the chiral ligand and the alpha-methylene hy

297 In addition to t-Bu groups, 1,1-dimethylpropyl and 1-ethyl-1-methylpropyl

298 e similarly in terms of stereoinduction to t-Bu-PHOX in three palladium-catalyzed asymmetric transfor

299 as Walk/Run, Bike, Train/Subway or Car/Taxi/Bus.

300 The superbase tert-Bu-P4 is found to directly initiate this polymerization

301 n combined with a suitable alcohol, the tert-Bu-P4 -based system rapidly converts gamma-BL into polye

302 ))2 (R = Bu(t), Mes, Ph, or Pr(i)), only the Bu(t) analogue does both H2 activation and H2-D2 exchang

303 The reaction of Pt(COD)2 with Bu(t)3SnH and CO gas afforded trans-Pt(SnBu(t)3)2(CO)2,

304 Me3) with Me3SnF or [kappa(4)-Tptm]ZnI with [Bu(n)4N]F.