Treatment of a series of 4-benzylsulfanyl-1,3-diols with toluene-p-sulfonyl chloride in pyridine gave substituted thiolanes in high yield by [1,4]-SBn participation and debenzylation with the chloride anion. The reaction is stereospecific giving up to three contiguous stereogenic centres and occurs efficiently irrespective of the stereochemistry.
                                    在
吡啶中用
甲苯-对
磺酰氯处理一系列 4-苄基
硫基-1,3
-二醇,通过 [1,4]-SBn 参与和
氯阴离子脱苄基,高产率地得到取代的
硫杂
环戊烷。该反应是立体特异性的,最多可产生三个连续的立体中心,并且无论立体
化学如何,都能有效发生。