作者:María-Jesús Villa、Stuart Warren
DOI:10.1016/s0040-4039(01)93509-9
日期:1989.1
The title compounds (1) undergo a [1,4]-PhS shift to give an E,Z mixture of vinyl sulphides (2) with thionyl chloride but only the Z isomer if toluene-p-sulphonic acid is used. The reaction occurs only if another PhS group is present β to the hydroxyl. The starting materials (1) were available via Michael addition of dithioacetal nucleophiles (3) to methyl crotonate followed by α-sulphenylation.
标题化合物(1)经历[1,4] -PhS转变,得到硫化乙烯(2)与亚硫酰氯的E,Z混合物,但如果使用甲苯-对-磺酸则仅得到Z异构体。只有在羟基的β中存在另一个PhS基团时,反应才会发生。起始原料(1)可通过将二硫缩醛亲核试剂(3)迈克尔加成至巴豆酸甲酯,然后进行α-磺酰化而获得。