Toluene-p-thiosulphonates, RCH2SSO2 Tol (1) where R is an electron-withdrawing group are transformed readily into α-sulphonyldisulphides (2) which, with triethylamine, undergo fragmentation–elimination to give 2 moles of thioaldehydes, RCHS.
甲苯-对-
硫代
磺酸盐,RCH 2 SSO 2 Tol(1),其中R是吸电子基团,很容易转变为α-磺酰基二
硫化物(2),与
三乙胺一起进行裂解-消除反应,得到2摩尔
硫代醛,RCHS。