oxide/TMEDA-catalyzed cross-coupling of vinyl halides with thiols/diphenyl diselenide in anhydrous DMSO and KOH is reported. Utilizing this protocol various vinyl sulfides and selenides were synthesized in excellent yields with retention of the stereochemistry. The catalyst was recyclable.
A simple and efficient protocol for the cross-coupling of vinyl hahdes with thiols catalyzed by recyclable CuU nanoparticles underligand-freeconditions is reported. This methodology results in the synthesis of a variety of vinyl sulfides in excellent yields with retention of stereochemistry.
MnCl2·4H2O is described as an efficient catalytic system for the cross coupling of aryl/vinyl halides with thiols using KOH as base and DMSO as solvent. By using this new catalytic system various aryl/vinyl sulfides were synthesized in moderate to good yields. Retention of stereochemistry is observed in the case of vinyl sulfides.
作者:Craig G. Bates、Pranorm Saejueng、Michael Q. Doherty、D. Venkataraman
DOI:10.1021/ol0477935
日期:2004.12.1
[reaction: see text] We report a method for the synthesis of vinyl sulfides using the soluble copper(I) catalyst [Cu(phen)(PPh3)2]NO3. The desired vinyl sulfides are obtained in good to excellent yields, with retention of stereochemistry. This protocol tolerates a wide variety of functional groups or substrates, is palladium-free, and does not require the use of expensive or air-sensitive additives
N-heterocyclic carbene-catalyzed regio- and stereoselective hydrothiolation reaction of alkynes
作者:Zi-Song Cong、Yang Zhang、Guang-Fen Du、Cheng-Zhi Gu、Lin He
DOI:10.1080/00397911.2018.1468910
日期:2018.7.18
Abstract N-heterocyclic carbenes (NHCs) have been utilized as Brønsted base to catalyze the hydrothiolation reaction between alkynes and thiols to produce the vinyl sulfides stereoselectively. Graphical Abstract Graphical Abstract