Stereoselective Synthesis of (Z)-1,2-Diarylthio-1-alkene via the Reaction of Diaryl Disulfides with Terminal Alkynes Catalyzed by Cesium Hydroxide
作者:Kang Bing Zou、Xian Hong Yin、Wen Qi Liu、Ren Hua Qiu、Ruo Xin Li、Ling Ling Shao、Yin Hui Li、Xin Hua Xu、Rong Hua Yang
DOI:10.1080/00397910802654831
日期:2009.6.23
Abstract In the presence of a catalytic amount of cesiumhydroxide under a nitrogen atmosphere, terminal alkynes reacted with diaryl disulfides at room temperature in dimethylformamide to give almost exclusively (Z)-1,2-diarylthio-1-alkene in good yields, but under an air atmosphere, the reaction gave a mixture of alkynylsulfide and (Z)-1,2-diarylthio-1-alkene.
Addition of diaryl disulfides to terminal alkynes catalysed by an MCM-41-supported bidentate phosphine palladium(0) complex
作者:Jianying Li、Jun Liu、Mingzhong Cai
DOI:10.3184/030823409x12526892025829
日期:2009.10
2-bis(arylthio)-substituted alkenes have been conveniently synthesised in high yields by the stereoselective addition of diaryl disulfides to terminal alkynes catalysed by an MCM-41-supported bidentate phosphinepalladium(0) complex. This polymeric palladium catalyst can be recovered and reused many times without any loss of activity.