The treatment of β-hydroxydithioesters with dimethyl or diethyl acetals in the presence of an acid catalyst resulted in the formation of the six-membered endocyclic ketene dithioacetals, 4-alkylthio-Δ4-1,3-oxathianes, via transacetalization.
β-hydroxydithioesters用二
甲基或在酸
催化剂的存在下
二乙基缩醛的处理导致六元环内
烯酮二
硫的形成,4-烷
硫基-Δ 4 -1,3- oxathianes,经由transacetalization。