1. The 1,2-addition of α-oxoketene dithioacetals with methallyl Grignard reagent afforded the carbinols 2. 5 and 6 respectively.
   缩酮基为五元和六元环的α-氧代烯酮环二硫代缩酮与2-甲基烯丙基氯化镁反应得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.
   羟基二硫缩烯酮类化合物不仅含有烯丙基醇结构单元,而且双键端位被双烷硫基取代,是有机合成中的一类重要的有机中间体。

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