Rhodium-Catalyzed Reductive Coupling of Disulfides and Diselenides with Alkyl Halides, Using Hydrogen as a Reducing Agent
作者:Kaori Ajiki、Masao Hirano、Ken Tanaka
DOI:10.1021/ol051588n
日期:2005.9.1
[reaction: see text] We have established that RhCl(PPh3)3 catalyzes a reductive coupling of disulfides and diselenides with alkyl halides in the presence of triethylamine using hydrogen as a reducing agent. This reaction serves as a convenient new method to produce unsymmetrical sulfides and selenides from disulfides and diselenides instead of unstable and odoriferous thiols and selenols.
Synthesis of CuO on mesoporous silica and its applications for coupling reactions of thiols with aryl iodides
作者:Chin-Keng Chen、Yan-Wun Chen、Che-Hung Lin、Hong-Ping Lin、Chin-Fa Lee
DOI:10.1039/b918117b
日期:——
Novel CuO on mesoporous silica is prepared under a convenient approach, and has been shown to be an efficient catalyst for cross-coupling reactions of thiols with aryl iodides with only 1.0–5.0 mol% catalyst loading.
Reductive Coupling of Disulfides and Diselenides with Alkyl Halides Catalysed by a Silica-Supported Phosphine Rhodium Complex using Hydrogen as a Reducing Agent
作者:Hean Zhang、Mangen Hu、Mingzhong Cai
DOI:10.3184/174751913x13796950361813
日期:2013.10
The reductive coupling of disulfides and diselenides with alkyl halides was achieved in THF at 65 °C in the presence of 3 mol% of a silica-supported phosphine rhodium complex and triethylamine using hydrogen as a reducing agent, affording a variety of unsymmetrical sulfides and selenides in high yields. The heterogeneous rhodium catalyst can be recovered by a simple filtration and reused several times
在 3 mol% 二氧化硅负载的膦铑配合物和三乙胺存在下,使用氢气作为还原剂,在 65 °C 的 THF 中实现二硫化物和二硒化物与烷基卤化物的还原偶联,得到各种不对称的硫化物和硒化物高产。多相铑催化剂可以通过简单的过滤回收并重复使用多次而不会显着损失活性。还观察到与酰卤的反应。
Palladium on Charcoal as a Recyclable Catalyst for CS Cross-Coupling of Thiols with Aryl Halides under Ligand-Free Conditions
作者:Zheng Jiang、Jin She、Xufeng Lin
DOI:10.1002/adsc.200900501
日期:2009.11
S-Arylation of a wide variety of substituted aryl and aliphatic thiols with arylhalides using a catalytic amount of palladium on charcoal as a heterogeneous catalysis with potassium hydroxide as the base in dimethyl sulfoxide (DMSO) at 110 °C is accomplished in good yields. The CS bond formation reaction functions underligand-free conditions, and the palladium on charcoal catalyst can be is reused
C–S bond formation from thiols and aryliodides in the presence of a copper catalyst is reported. A combination of copper(II) oxide and 1,10-phenanthroline catalyzes this reaction. A variety of aryliodides react smoothly with thiols to provide the corresponding aryl sulfides in good to excellent yields. Notably, the reactions proceed in water with a short reaction time (30 minutes). This system shows