New straightforward route for the synthesis of some 1‐oxa‐2‐silacyclopentane derivatives

Abstract

3 CLi, reacts with allyl, phenyl, benzyl, n-propyl and n-butyl glycidyl ethers in THF at -5 °C to give 1-oxa-2-silacyclopentane derivatives. It seems that ring closure is facilitated by conversion of the Si-H bond into an Si-O bond. Glycidyl methacrylate (GM) random copolymers with 4-methyl-and 4-methoxy styrene, synthesized by solution free radical polymerization at 70 (±1) °C with α,α-azobis(isobutyronitrile) (AIBN) as initiator, contained pendant epoxide functions. Treatment of these with (HSiMe 2 ) 3 CLi did not lead to intramolecular nucleophilic attack as found for simple epoxides.

Study of the reaction of 1,1-bis(trimethylsilyl)-2-phenylethylene with some acyl chlorides in the presence of AlCl3

“…The use of silicon-based reagents to accomplish carbon-carbon bond-forming reactions is a part of our recent research on the development of organosilicon reagents for synthesis [9][10][11][12][13][14]. We decided to investigate the reaction of 1,1-bis-(trimethylsilyl)-2-phenylethylene (1), with various readily available acyl chlorides.…”