Synthesis and reactions of some optically active epoxides formally derived from tertiary allylic alcohols
作者:Jamie F. Bickley、Adam T. Gillmore、Stanley M. Roberts、John Skidmore、Alexander Steiner
DOI:10.1039/b008275i
日期:——
The epoxyketones 2, 3 and 7–9 reacted with Grignard reagents in a highly stereocontrolled manner to give the epoxyalcohols 20, 4–6 and 11-13 in high yields. The epoxyalcohol 12 underwent a Payne rearrangement on base treatment to give the isomer 15 while epoxyalcohols 4, 5, 12 and 20 suffered ring-opening (with retention of configuration) using tin(IV) chloride to afford chlorodiols 18, 17, 19 and
的环氧酮2,3和7 - 9与反应格氏试剂在一个高度立体控制的方式,得到环氧醇20,4 - 6和11 - 13以高收率。的环氧醇12行上碱处理一个佩恩重排,得到异构体15而环氧醇4,5,12和20遭受开环(具有配置的保持率)使用氯化锡(IV)得到chlorodiols 18,17,19和21分别。另一方面,酒类 4,5和12与三烷基甲硅烷氯化物反应,以提供所述chlorodiols 22,24和23与构型反转分别。