Nucleophilic addition-elimination reactions of N-(p-tolylsulphonyl)vinylsulphoximines: preparation of α-methylene nitriles and phosphonates
作者:Peter L. Bailey、Richard F.W. Jackson
DOI:10.1016/0040-4039(91)80705-b
日期:1991.6
Treatment of N-(p-tolylsulphonyl)vinylsulphoximines (1) with lithium cyanide in DMF at room temperature leads to efficient formation of α,β-unsaturated nitriles (3), via a Michael addition-proton transfer-elimination process, in which the polarity of the double bond is reversed. Analogous reaction with lithium dimethylphosphonate leads to β-dimethylphosphonyl sulphoximines (7), which are converted
在室温下,用氰化锂在NMF中处理N-(对甲苯磺酰基)乙烯基亚磺酰亚胺(1),可通过迈克尔加成-质子转移消除工艺有效形成α,β-不饱和腈(3),其中双键的极性相反。与锂dimethylphosphonate通向β-二甲基膦亚砜亚胺类似的反应(7) ,其被转换为α,β不饱和膦酸酯(6)通过用NaOMe处理。