A heterogeneous copper-catalyzed direct oxidative cross-dehydrogenativecoupling of terminalalkynes with thiols was achieved in DMSO at 70 °C in the presence of an MCM-41-supported bidentate nitrogen copper(I) complex [MCM-41-2N-CuCl] and K2CO3 under an atmosphere of O2, yielding selectively a variety of alkynyl sulfides in good to excellent yields. This heterogeneous copper catalyst can be easily
在MSO-41负载的双齿氮铜(I)络合物[MCM-41-2N-CuCl]的存在下,在DMSO中于70°C的条件下,末端炔烃与硫醇的异质铜催化直接氧化交叉脱氢偶联反应和在O 2气氛下的K 2 CO 3,以良好至优异的产率选择性地产生各种炔基硫化物。该多相铜催化剂可通过简单的过滤容易地回收并循环10次而活性没有降低。
Metal-free direct thiolation of terminal alkynes with methyl sulfoxides
作者:Chen Chen、Liangliang Pan、Jinchen Zhu、Junfa Shao、Jiaming Dai、Guoying Qian、Zhouting Rong
DOI:10.1016/j.tetlet.2022.154275
日期:2023.1
A metal-free method has been developed for the direct thiolation of terminal alkynes with methyl sulfoxides, which affords various alkynyl sulfides. This transformation features excellent functional group tolerance, good stability in large-scale preparation and atom economy, which makes this reaction a practical method for the synthesis of alkynyl sulfides.
A concise synthetic strategy to alkynyl sulfides via transition-metal-free catalyzed C–S coupling of 1,1-dibromo-1-alkenes with thiophenols
作者:Zhangqin Ni、Sichang Wang、Hui Mao、Yuanjiang Pan
DOI:10.1016/j.tetlet.2012.05.072
日期:2012.7
A novel synthetic strategy to alkynyl sulfides via transition-metal-free catalyzed C-S coupling of 1,1-dibromo-1-alkenes with thiophenols has been developed. The new strategy which avoided the transition-metal toxicities is environmental friendly and very important for alkynyl sulfides synthesis. (C) 2012 Elsevier Ltd. All rights reserved.