An efficient method for local protection of drill bit legs from gas carburization

An efficient method for the vicinal acyl

An efficient method for the vicinal acylation of unactivated olefins using keteniminium salts derived from protected α-Hydroxy- or α-Aminoacids.

✍ Christophe Genicot; Benoît Gobeaux; Léon Ghosez 📂 Article 📅 1991 🏛 Elsevier Science 🌐 French ⚖ 229 KB

Ketennnuuum salts dewed from 0-methylglycolic or N-tosylsarcosme anudes cycloadd to olefms to give good yields of the Lorrespondmg cyclobutanones which undergo reglospeclfic Baeyer-Vdhger oxldatlon to form y-butyrolactones A short sequence leading to the regio-and stereoselective addrtion of two dif