Coupling Reaction of Magnesium Alkylidene Carbenoids with α-Sulfonylallyllithiums: An Efficient Route to Multi-Substituted Vinylallenes
作者:Tsuyoshi Satoh、Tsutomu Kimura、Gen Kobayashi、Masashi Ishigaki、Mio Inumaru、Jo Sakurada
DOI:10.1055/s-0032-1317507
日期:——
sulfoxides and allyl or vinyl sulfones. Allyl and vinyl sulfones served as α-sulfonylallyllithium sources were prepared from carbonyl compounds in three or four steps in good overall yields. The coupling reaction of α-sulfonylallyllithiums with magnesium alkylidene carbenoids, which were generated from 1-chlorovinyl p-tolyl sulfoxides and isopropylmagnesium chloride, afforded multi-substituted vinylallenes
摘要 从1-氯乙烯基对甲苯基亚砜和烯丙基或乙烯基砜成功地合成了各种乙烯基烯丙基。由羰基化合物分三步或四步以良好的总收率制备用作α-磺酰基烯丙基锂的烯丙基和乙烯基砜。α-磺酰基烯丙基锂与由1-氯乙烯基对甲苯基亚砜和异丙基氯化镁生成的亚烷基镁类胡萝卜素的偶合反应以高达88%的产率提供了多取代的乙烯基烯。 从1-氯乙烯基对甲苯基亚砜和烯丙基或乙烯基砜成功地合成了各种乙烯基烯丙基。由羰基化合物分三步或四步以良好的总收率制备用作α-磺酰基烯丙基锂的烯丙基和乙烯基砜。α-磺酰基烯丙基锂与由1-氯乙烯基对甲苯基亚砜和异丙基氯化镁生成的亚烷基镁类胡萝卜素的偶合反应以高达88%的产率提供了多取代的乙烯基烯。