Siliconcarbon hyperconjugation in cation radicals I. Lowering of oxidation potentials of N-[(trimethylsilyl)methyl] aromatic amines
作者:B.E. Cooper、W.J. Owen
DOI:10.1016/s0022-328x(00)87488-4
日期:1971.5
Large decreases in the oxidation potentials of N-(silylmethyl) aromatic amines (e.g. Me3SiCH2NHPh) could not be correlated with Taft σ* or Hammett σ constants, but a good correlation was obtained with σ+ constants. This is consistent with silylhyperconjugative electron release in the intermediate cation radical.
N-(甲硅烷基甲基)芳香胺(例如Me 3 SiCH 2 NHPh)的氧化电位的大幅下降与Taftσ *或Hammettσ常数无关,但与σ +常数具有良好的相关性。这与中间阳离子自由基中甲硅烷基超共轭电子的释放是一致的。
BARLUENGA J.; FANANAS F. J.; YUS M., J. ORG. CHEM., 1979, 44, NO 26, 4798-4801
作者:BARLUENGA J.、 FANANAS F. J.、 YUS M.
DOI:——
日期:——
.beta.-Substituted organolithium compounds. New reagents for synthesis
作者:Jose Barluenga、Francisco J. Fananas、Miguel Yus
DOI:10.1021/jo00394a011
日期:1979.12
Asymmetric Synthesis of Silylated α-Amino Acid Esters through Dynamic Kinetic Resolution
作者:Jian-Xin Chen、Jon A. Tunge、Jack R. Norton
DOI:10.1021/jo010940h
日期:2002.6.1
Esters of three types of silylated alpha-amino acids have been prepared from appropriate zirconaaziridines. Slow addition (syringe pump) of the (R,R) carbonate of trans-stilbene gave metallacycles with the maximum possible diastereomeric excess (as determined by the diastereomeric excess produced by the Hoffmann test-the same reaction but with racemic carbonate). Methanolysis gave esters (RO(2)C)CH(R')(NHPh)