Ring Contraction of 1,2,4,5,7,8-Hexaoxa-3-silonanes by Selective Reduction of COOSi Fragments. Synthesis of New Silicon-Containing Rings, 1,3,5,6-Tetraoxa-2-silepanes
作者:Alexander O. Terent’ev、Maxim M. Platonov、Anna I. Tursina、Vladimir V. Chernyshev、Gennady I. Nikishin
DOI:10.1021/jo8023957
日期:2009.3.6
The reducing agents Ph3P, (C8H17)3P, or NH2C(S)NH2 promote the ring contraction of nine-membered triperoxides, viz., 1,2,4,5,7,8-hexaoxa-3-silonanes, giving rise to seven-membered rings belonging to the previously unknown class of monoperoxides, viz., 1,3,5,6-tetraoxa-2-silepanes, in yields from 67% to 91%. Therefore, the selective reduction of the SiOOC fragments to SiOC in molecules containing simultaneously