Preparation of 1-phenylthio-1,3-dienes by reaction of 2,5-dihydrothiophenes with benzyne through fragmentation of sulfonium ylide intermediates
作者:Juzo Nakayama、Yuichi Kumano、Masamatsu Hoshino
DOI:10.1016/s0040-4039(01)80633-x
日期:1989.1
reaction of a series of 2,5-dihydrothiophenes with benzyne, generated from 2-carboxybenzenediazonium chloride, affords 1-phenylthio-1,3-dienes in good yields through the fragmentation of sulfoniumylideintermediates.
General synthesis of 2,5-dihydrothiophenes (3-thiolenes) from diketo sulfides
作者:Juzo Nakayama、Haruki Machida、Masamatsu Hoshino
DOI:10.1016/s0040-4039(00)98357-6
日期:1985.1
The intramolecular reductive coupling reaction of easily accessible diketo sulfides by a low-valenttitaniumreagent [prepared fromtitanium(IV) chloride and zinc powder] provides an efficient general synthesis of 2,5-dihydrothiophenes.