Carbon–Sulfur Bond Formation Catalyzed by [Pd(IPr*<sup>OMe</sup>)(cin)Cl] (cin = cinnamyl)
作者:Gulluzar Bastug、Steven P. Nolan
DOI:10.1021/jo401492n
日期:2013.9.20
The newly prepared complex [Pd(IPr*OMe)(cin)(Cl)] provides high catalytic activity for carbon–sulfur cross-coupling reactions. Nonactivated and deactivated aryl halides were successfully coupled with a large variety of aryl- and alkylthiols using this well-defined palladium N-heterocycliccarbene (NHC) complex.
Formation of Carbon–Sulfur and Carbon–Selenium Bonds by Palladium-Catalyzed Decarboxylative Cross-Couplings of Hindered 2,6-Dialkoxybenzoic Acids
作者:Jean-Michel Becht、Claude Le Drian
DOI:10.1021/jo200344w
日期:2011.8.5
using a decarboxylativepalladium-catalyzed reaction between electron-rich 2,6-dialkoxybenzoic acid derivatives and diaryl disulfides is reported. This coupling proceeds efficiently in the presence of Pd(CF3CO2)2 and Ag2CO3 in a 65:1 mixture of 1,4-dioxane and tetramethylene sulfoxide (TMSO). We present also the first formation of a carbon–selenium bond via a palladium-catalyzeddecarboxylative cross-coupling
据报道,在富电子的2,6-二烷氧基苯甲酸衍生物和二芳基二硫化物之间进行脱羧钯催化反应,可轻松制得二芳基硫化物。在Pd(CF 3 CO 2)2和Ag 2 CO 3在1,4-二恶烷和四亚甲基亚砜(TMSO)的65:1混合物中存在时,该偶联有效地进行。我们还介绍了通过钯催化的脱羧交叉偶联的碳-硒键的首次形成。
Bis(2-pyridyl)diselenoethers as versatile ligands for copper-catalyzed C–S bond formation in glycerol
作者:Roberta Cargnelutti、Ernesto S. Lang、Ricardo F. Schumacher
DOI:10.1016/j.tetlet.2015.07.060
日期:2015.9
In this Letter, we describe a simple and efficient general methodology for CuI/bis(2-pyridyl)diselenoether-catalyzed C-S coupling reactions of aryl halides with thiols using glycerol as an environmentally friendly solvent. The products were obtained in moderate to excellent yields. The performance of CuI/L3-catalyzed C-S coupling reactions in glycerol is comparable to the related cross-coupling reactions in common organic solvents using transition-metal salts as catalyst. The use of the system CuI/L3/glycerol related in this work offers the possibility of performing the reaction in the absence of toxic organic solvents, expensive metals and using ultrasound as an alternative energy source. (C) 2015 Elsevier Ltd. All rights reserved.
N-Chlorosuccinimide promoted direct C(sp2)–H bond thiolation of the methoxybenzenes with thiophenols
A simple and an efficient procedure for the formation of diaryl sulfides via direct sp2 C–H functionalization have been developed from simple and readily available thiophenols and substituted methoxy benzenes. In this process thiophenols were used as the sulfur source. In this transformation broad range of functional groups were well tolerated in good to excellent yields.