One-Pot Oxidation and Bromination of 3,4-Diaryl-2,5-dihydrothiophenes Using Br<sub>2</sub>: Synthesis and Application of 3,4-Diaryl-2,5-dibromothiophenes
作者:Yizhe Dang、Yi Chen
DOI:10.1021/jo071172i
日期:2007.8.31
(1b−5b) was synthesized by a one-pot reaction of 3,4-diaryl-2,5-dihydrothiophenes with Br2 reagent in excellent yield (83−92%). It was found that Br2 performed a double function (oxidation and bromination) during the conversion of 3,4-diaryl-2,5-dihydrothiophenes to 3,4-diaryl-2,5-dibromothiophenes. The application of 3,4-diaryl-2,5-dibromothiophenes used as building blocks was also investigated. Employing
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.