1.The 1,2-addition of α-oxoketene dithioacetals with methallyl Grignard reagent afforded the carbinols 2. 5 and 6 respectively.
缩为五元和六元环的α-氧代环二硫代缩与2-甲氯化镁反应得1,2-加成产物。
2.hydroxyl ketene dithioacetals possessing an allylalcohol moiety, as well as terminal bisalkylthio substituted alkene are a class of important intermediates in organic synthesis.