Stereoselective Synthesis of Enamides by a Peterson Reaction Manifold
摘要:
[GRAPHICS]Vinylsilanes are converted into enamides by a sequence comprising epoxidation, nucleophilic ring opening of the resulting epoxysilanes with NaN3, and reduction of the azide, followed by a "one-pot" N-acylation/Peterson elimination process. This method is distinguished by its wide applicability and stereoselective course.
Simple preparation of α-bromo acyl silanes α-ketoacyl silanes and α-ketoesters from silyl acetylenes
作者:Philip C Bulman Page、Stephen Rosenthal
DOI:10.1016/s0040-4020(01)82037-8
日期:1990.1
α-Bromo- and α-keto-acyl silanes may simply and efficiently be prepared in short reaction schemes from silyl acetylenes; α-ketoacyl silanes are also implicated in a one-pot synthesis of α-ketoesters from silyl acetylenes.
Synthesis and Reactions of 1-(Trimethylsilyl)allyl Chloride
作者:Nobujiro Shimizu、Fumihiro Shibata、Yuho Tsuno
DOI:10.1246/bcsj.57.3017
日期:1984.10
1-(Trimethylsilyl)allyl chloride prepared conveniently from 1,3-dichloropropene reacted smoothly with organocopper compounds yielding terminal alkenylsilanes, while its Grignard reactions with carbonyl compounds gave the corresponding alcohols with the regioselection depending sensitively on substrates.
A new method for the highlystereoselectivesynthesis of (Z) -1-phenylthio-1-trialkylsilylalkenes 3 by the elimination of methanol from 1-methoxy-1-phenylthio-1-trialkylsilylalkane 2 in organic solvents is described.
An umpolung of aryl and vinyl halides using tris-(trimethylsilyl)aluminum an approach to - and -bridged aromatics
作者:Barry M. Trost、Jun-ichi Yoshida
DOI:10.1016/s0040-4039(01)99804-1
日期:1983.1
A simple synthesis of B-2-(1-trimethylsilyl-1-alkyl)-1,3,2-dioxaborinanes. Isolation and selective oxidation to 1-trimethylsilyl-1-alkanols
作者:Narayan G. Bhat、Amanda Garza
DOI:10.1016/s0040-4039(03)01750-7
日期:2003.9
(Z)-1-Trimethylsilyl-1-alkenes easily prepared by the hydroboration of the corresponding 1-trimethylsilyl-1-alkynes followed by protonolysis with acetic acid, readily react with dibromoborane-methyl sulfide complex in dichloromethane for 6 h. The resulting solution is then treated with 1,3-propane diol in a 1:1 mixture of dichloromethane and n-pentane at 0degreesC for half an hour to provide the corresponding gem-dimetalloalkanes containing boron and silicon. These alpha-trimethylsilylalkylboronate esters are purified by vacuum distillation in high yields (72-84%) and the structures of these novel intermediates are further confirmed by selective oxidation with alkaline hydrogen peroxide to provide the corresponding alcohols containing trimethylsilyl group. (C) 2003 Elsevier Ltd. All rights reserved.