The anti-Markovnikov addition of thiols to alkenes/alkynes and thiolysis of epoxides is described using Amberlyst-15(C) as a selective, commercially available, inexpensive and reusable catalyst. The products like diorganyl sulphides, beta-hydroxy sulphides and phenyl(styryl)sulfanes were obtained in good to excellent yields in short reaction time and with high regio-selectivity. The catalyst was reused up to five consecutive recycles without any loss in its catalytic activity. The developed methodology is a metal free protocol for C-S bond formation reaction with high atom economy. (C) 2013 Elsevier B.V. All rights reserved.
transition-metal-free t-BuOK-mediated reductive C–P cross-coupling reaction of arylvinyl sulfides with diarylphosphine oxides through C–S bondcleavage has been developed. This protocol not only permits the synthesis of diaryl(2-arylethyl)phosphine oxides, but also achieves an unprecedented construction of a C–P bond through C–S bondcleavage and reduction of a C–C double bond in one pot.
Stereoselective Synthesis of Alkenyl Silanes, Sulfones, Phosphine Oxides, and Nitroolefins by Radical C–S Bond Cleavage of Arylalkenyl Sulfides
作者:Ya-mei Lin、Guo-ping Lu、Rong-kang Wang、Wen-bin Yi
DOI:10.1021/acs.orglett.7b00126
日期:2017.3.3
has been introduced for the C–S bond activation of arylalkenyl sulfides. The protocol provides an efficient approach for the generation of various alkenes including alkenyl silanes, sulfones, phosphineoxides, and nitroolefins. In most cases, these radical substitutions are performed under metal-free conditions with stereospecificity.
Mild, Efficient and Highly Stereoselective Synthesis of (<i>Z</i>)-Vinyl Chalcogenides from Vinyl Bromides Catalyzed by Copper(I) in Ionic Liquids Based on Amino Acids
作者:Weiliang Bao、Zhiming Wang、Hanjie Mo
DOI:10.1055/s-2006-958413
日期:2007.1
A method for the synthesis of(Z)-vinyl chalcogenides by the coupling of vinyl bromides with thiols or diphenyl diselenide using copper(I) salts as catalysts in ionic liquids based on amino acids is reported. The desired vinyl chalcogenides were obtained in good to excellent yields with retention of stereochemistry. The ionic liquids play multiple roles in the reaction: they act as solvent, base, and
Regio- and stereoselective synthesis of vinyl sulfides via PhSeBr-catalyzed hydrothiolation of alkynes
作者:Flávia Manarin、Juliano A. Roehrs、Marina Prigol、Diego Alves、Cristina W. Nogueira、Gilson Zeni
DOI:10.1016/j.tetlet.2007.05.076
日期:2007.7
We present here a simple and mild method of hydrothiolation of internal and terminal alkynes under PhSeBr-catalyzed reaction in the absence of solvent at room temperature. The reaction tolerates a wide variety of substituents on thiol, and provides the corresponding product in good yield and selectivity. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis of Vinyl Sulfides by Copper-Catalyzed Decarboxylative C−S Cross-Coupling
作者:Sadananda Ranjit、Zhongyu Duan、Pengfei Zhang、Xiaogang Liu
DOI:10.1021/ol101729k
日期:2010.9.17
A novel method for the synthesis of vinyl sulfides by the decarboxylative cross-coupling of arylpropiolic acids with thiols using copper(I) salts as catalysts has been developed. In the presence of Cul and Cs2CO3, a variety of thiols reacted with arylpropiolic acids to afford the corresponding vinyl sulfides in good to excellent yields with high stereoselectivity for Z-isomers.