Arylacetylenes react with sodium sulfide in the presence of water to yield divinylsulfides. The reaction proceeds in good to excellent yield for both electron-neutral and electron-deficient aromatic systems; for electron-rich aryls, longer reaction times are necessary. The sulfides represent useful substrates for further transformations, for example, oxidation to the corresponding divinylsulfoxides and divinylsulfones. Three selected divinylsulfide derivatives were oxidized selectively to the corresponding sulfoxides or sulfones.
芳烃炔与
硫化
钠在
水的存在下反应,生成二
乙烯基硫化物。该反应对电子中性和电子缺乏的芳香系统均能获得良好至优秀的产率;而对于电子富集的芳基,则需要更长的反应时间。这些
硫化物是进一步转化的有用底物,例如氧化为相应的二
乙烯基亚砜和二
乙烯基磺酮。选择的三种二
乙烯基硫化物衍
生物被选择性地氧化为相应的亚砜或磺酮。