Highly stereoselective anti-Markovnikov hydrothiolation of alkynes and electron-deficient alkenes by a supported Cu-NHC complex
作者:Yong Yang、Robert M. Rioux
DOI:10.1039/c4gc00642a
日期:——
A robust silica-supported Cu-NHC complex catalyzed highly stereoselective anti-Markovnikov hydrothiolation of alkynes or electron-deficient alkenes to construct C–S bonds.
Glycerol/CuI/Zn as a recyclable catalytic system for synthesis of vinyl sulfides and tellurides
作者:Lóren C.C. Gonçalves、David B. Lima、Pedro M.Y. Borba、Gelson Perin、Diego Alves、Raquel G. Jacob、Eder J. Lenardão
DOI:10.1016/j.tetlet.2013.04.119
日期:2013.6
Cu-catalyzed coupling of diphenyl disulfide and diphenyl ditelluride with vinyl bromides using a recyclable catalytic system and glycerol as a green solvent is described. This protocol was efficiently used in the preparation of vinylsulfides and vinyl tellurides with a variety of substituents in good yields and stereoselectively. The solvent/catalyst system was directly reused for four cycles without loss