Intramolecular reactions. Part IX. Stereochemistry and mechanism of the rearrangement of acetylenic esters of sulphinic and sulphenic acids to allenes
作者:Geraldine Smith、C. J. M. Stirling
DOI:10.1039/j39710001530
日期:——
Sulphinic esters of prop-2-ynyl alcohols rearrange thermally to allenyl sulphones. Evidence for a cyclic mechanism for the rearrangement is discussed. (+)-(R)-1-Methylprop-2-ynyl toluene-p-sulphinate rearranges to (–)-buta-1,2-dienyl p-tolyl sulphone, whose absolute configuration, predicted on the basis of a cyclic mechanism for the rearrangement, agrees with that calculated from the polarisability
丙-2-炔醇的亚磺酸酯热重排为烯丙基砜。讨论了用于重排的循环机制的证据。(+)-(R)-1-甲基丙-2-炔基甲苯-对-硫酸盐重排为(-)-丁-1,2-二烯基对甲苯基砜,其绝对构型是根据循环机理预测的对于重排,与从与手性系统连接的取代基的可极化性序列计算的序列一致。