Unusual lithiation of 4-(1′,2′-alkadienesulphinyl)-morpholines. Preparation of substituted propargylic sulphinamides and their hydrolytic desulphinylation into the corresponding allenes

Substituted 4-(1′,2′-alkadienesulphinyl)

Substituted 4-(1′,2′-alkadienesulphinyl)-morpholines; preparation and hydrolytic desulphinylation into the corresponding alkynes

✍ Jean-Bernard Baudin; Sylvestre A. Julia; Yuan Wang 📂 Article 📅 1989 🏛 Elsevier Science 🌐 French ⚖ 224 KB

By the reaction with 4-morpholinesulphenyl chloride carried out in the presence of triethylamine, several substituted propargylic alcohols have been converted into the corresponding allenic sulphinamides 1. As a complementary method, the new allenic lithio-derivatives II have been prepared and effic