Oxo ketene dithioacetals 1 are a kind of versatile intermediates in organic synthesis.
羰基二硫缩烯酮类化合物1是一类重要的有机合成中间体其。
2
However, alkyl-substituted propargylic dithioacetals could be synthesized by the displacement reaction of the corresponding terminal alkynes with alkyl iodides.