Unusual lithiation of 4-(1′,2′-alkadienesulphinyl)-morpholines. Preparation of substituted propargylic sulphinamides and their hydrolytic desulphinylation into the corresponding allenes
作者:Jean-Bernard Baudin、Sylvestre A Julia、Odile Ruel、Yuan Wang
DOI:10.1016/s0040-4039(00)94373-9
日期:1990.1
By deprotonation with methyllithium and reaction with water, deuterium oxide or alkyl halide, the γ-monosubstituted allenic sulphinamides have been converted into the substituted propargylic sulphinamides which were hydrolysed or deuterolysed with loss of sulphur dioxide to provide the corresponding allenes .