Enhanced livingness of polymerization using silylated oxyanions
申请人:E. I. Du Pont de Nemours and Company
公开号:US04736003A1
公开(公告)日:1988-04-05
Silylated oxyanion catalysts, such as trimethyl silyl 3-chlorobenzoate, provide increased livingness of group transfer polymerization, thereby permitting higher molecular weights and polymerization efficiencies.
Synthesis of trimethylsilyl carboxylates by HMDS under solvent-free conditions
作者:Marjan Jereb、Janja Lakner
DOI:10.1016/j.tet.2016.08.003
日期:2016.9
carboxylic acids were transformed into their trimethylsilyl esters with HMDS in a practically completely solvent-free process, while a catalytic amount of iodine was required in some cases. The process has several advantages over the known methods: untreated reactants, air atmosphere, mild and neutral conditions, no evolution of hydrogen halide, no need of an additional base, low amount of waste, completely
Rearrangement and radical mediated decarboxylation of trimethylsilyl benzoates using xenon difluoride
作者:Pakawan Nongkunsarn、Christopher A. Ramsden
DOI:10.1039/p19960000121
日期:——
Treatment of trimethylsilyl benzoates 1 with xenon difluoride in CH2Cl2 or C6F6 results in a novel ester rearrangement and formation of aryl fluoroformates 2: rearrangement is not observed in MeCN solution in which the main products are arenes formed via the corresponding aryl radical.