Intramolecular cyclization of allylic propiolates mediated by the addition of stannyl radicals: A new synthetic route to α-methylene-γ-butyrolactones
作者:Eun Lee、Sung Bo Ko、Kyung Woon Jung、Moon Ho Chang
DOI:10.1016/s0040-4039(01)80626-2
日期:1989.1
Allylic propiolates react with tributyl- or triphenylstannane to yield α-(stannyl)methylene-γ-butyrolactones. α-Methylene-γ-butyrolactones are easily prepared by destannylation.