TMSCl/Fe(NO<sub>3</sub>)<sub>3</sub>-Catalyzed Synthesis of 2-Arylbenzothiazoles and 2-Arylbenzimidazoles Under Ultrasonic Irradiation
作者:Yan-Qin Yuan、Sheng-Rong Guo
DOI:10.1080/00397911.2010.501470
日期:2011.7.15
Abstract A convenient one-pot cyclocondensation method for benzothiazole and benzimidazole syntheses is described. A set of benzothiazoles and benzimidazoles were readily prepared from aromatic ortho-diamines or ortho-aminothiophenol and aldehydes using chlorotrimethylsilane in dimethylformamide as promoter and water scavenger under ultrasonic irradiation in good yields (84–97%).
Microwave assisted C–S cross-coupling reaction from thiols and 2-(4-bromo phenyl)-benzothiazole employed by CuI in acetonitrile
作者:Ramesh Katla、Rakhi Katla
DOI:10.1039/d2nj02065c
日期:——
A microwave assisted C–S and C–Se cross-coupling reaction was carried out in acetonitrile employing commercially available, low-cost CuI as the catalyst. A variety of substrates, including aryl, aliphatic, and heteroaryl thiols, were reacted with 2-(4-bromo phenyl)-benzothiazole, in acetonitrile using K2CO3 as the base under microwave assisted conditions at 80 °C, 200 W (100 psi) for 25–35 min, affording
使用市售的低成本 CuI 作为催化剂,在乙腈中进行微波辅助 C-S 和 C-Se 交叉偶联反应。各种底物,包括芳基、脂肪族和杂芳基硫醇,在 80 °C、200 W 微波辅助条件下,在乙腈中以 K 2 CO 3为碱,与 2-(4-溴苯基)-苯并噻唑反应( 100 psi) 25-35 分钟,以良好至极好的产量提供所需的产品。这是一种新颖的方法,我们合成了一系列 17 种新的交叉耦合 C-S 和 C-Se 分子。