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
还原剂Ph 3 P,(C 8 H 17)3 P或NH 2 C(S)NH 2促进九元三元氧化物的环状收缩,即1,2,4,5,7,8- hexaoxa-3-silonanes,产生七元环,属于先前未知的一元过氧化物类,即1,3,5,6-tetraoxa-2-silepanes,产率为67%至91%。因此,首次将同时包含COOC片段的分子中的SiOOC片段选择性还原为SiOC。