Carboxylic esters radical leaving groups: a new and efficient gas-phase synthesis of benzofurans
作者:Michael Black、J. I. G. Cadogan、Gary A. Cartwright、Hamish McNab、Andrew D. MacPherson
DOI:10.1039/c39930000959
日期:——
Flash vacuum pyrolysis (FVP) of o-allyloxycinnamate esters gives benzofurans in high yield, via cyclisation of a phenoxyl radical and subsequent cleavage of the carboxylic ester function; coumarins are obtained by FVP of the corresponding phenols.
邻烯丙基肉桂酸酯的闪速真空热解(FVP)可通过苯氧自由基的环化和随后的羧基酯功能裂解,得到高产率的苯并呋喃;相应苯酚的 FVP 可得到香豆素。