Lewis Acidity of Bis(perfluorocatecholato)silane: Aldehyde Hydrosilylation Catalyzed by a Neutral Silicon Compound.
Lewis Acidity of Bis(perfluorocatecholato)silane: Aldehyde Hydrosilylation Catalyzed by a Neutral Silicon Compound.
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二氧化硅的刘易斯酸度:醛的醛氢硅烷基由中性硅化合物催化。
DOI:
10.1021/jacs.5b02807
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发表时间:
2015-04-29
影响因子:
15
通讯作者:
Tilley TD
中科院分区:
文献类型:
--
作者:
Liberman-Martin AL;Bergman RG;Tilley TD
Bis(perfluorocatecholato)silane Si(catF)2 was prepared, and stoichiometric binding to Lewis bases was demonstrated with fluoride, triethylphosphine oxide, and N,N′-diisopropylbenzamide. The potent Lewis acidity of Si(catF)2 was suggested from catalytic hydrosilation and silylcyanation reactions with aldehydes. Mechanistic studies of hydrosilation using an optically active silane substrate, R-(+)-methyl(1-napthyl)phenylsilane, proceeded with predominant stereochemical retention at silicon, consistent with a carbonyl activation pathway. The enantiospecificity was dependent on solvent and salt effects, with increasing solvent polarity or addition of NBu4BArF4 leading to a diminished enantiomeric ratio. The medium effects are consistent with an ionic mechanism, wherein hydride transfer occurs prior to silicon–oxygen bond formation.
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DOI:
10.1002/anie.199622261
发表时间:
1996-10-21
期刊:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH
影响因子:
--
作者:
Bochmann, M;Dawson, DM
通讯作者:
Dawson, DM
影响因子:
3.6
作者:
Chandrasekhar, S;Reddy, CR;Babu, BN
通讯作者:
Babu, BN
影响因子:
2.3
作者:
DOYLE, MP;WEST, CT;MCOSKER, CC
通讯作者:
MCOSKER, CC
影响因子:
4.9
作者:
Muether, Kristine;Oestreich, Martin
通讯作者:
Oestreich, Martin
影响因子:
15
作者:
Metsaenen, Toni T.;Hrobarik, Peter;Oestreich, Martin
通讯作者:
Oestreich, Martin