Novel cyclodehydration reaction of hydroxyphenols. An alternative to the Mitsunobu reaction
作者:Panayiotis A. Procopiou、Alastair C. Brodie、Martyn J. Deal、David F. Hayman、Gary M. Smith
DOI:10.1039/p19960002249
日期:——
A mild, efficient and stereospecific intramolecular process for converting hydroxyphenols into benzodioxanes, dihydrobenzopyrans and dihydrobenzofurans via imidate esters is described. The only by-products are N,N-dimethylformamide and triethylamine hydrochloride which are removed by aqueous work-up making this process highly amenable to large scale operation.