Efficient 2-Aryl Benzothiazole Formation from Aryl Ketones and 2-Aminobenzenethiols under Metal-Free Conditions
作者:Yunfeng Liao、Hongrui Qi、Shanping Chen、Pengcheng Jiang、Wang Zhou、Guo-Jun Deng
DOI:10.1021/ol302902e
日期:2012.12.7
2-Aryl benzothiazole formationfrom aryl ketones and 2-aminobenzenethiols under metal- and I2-free conditions was described. Various 2-aryl benzothiazoles were selectively obtained in good yields using molecular oxygen as oxidant. DMSO played an important role in this transformation. Functional groups such as methyl, methoxy, fluoro, chloro, bromo and nitro groups were tolerated under the optimized reaction
KI-catalyzed arylation of benzothiazoles from the coupling of aryl aldehydes with benzothiazoles in neat water
作者:Yuyu Gao、Qiuling Song、Guolin Cheng、Xiuling Cui
DOI:10.1039/c3ob42318b
日期:——
A KI-catalyzed oxidative coupling of benzothiazoles with aryl aldehydes using TBHP as an oxidant in neat water under metal free conditions is described.
Copper-Catalyzed Arylation of Benzothiazoles with Toluene Derivatives: Synthesis of 2-Arylbenzothiazole
作者:Hongmei Deng、Xueshun Jia、Jian Li、Chengliang Li、Tao Jin、Zhiqiang Liu、Ruolan Jiang、Chunju Li
DOI:10.1055/s-0036-1588487
日期:2017.9
Abstract A copper-catalyzed reaction of benzothiazole and readily available toluene derivatives has been disclosed. This protocol is proposed to proceed through the oxidation of toluene and ring opening of benzothiazole, thus providing a new pathway for the synthesis of 2-arylbenzothiazoles. A copper-catalyzed reaction of benzothiazole and readily available toluene derivatives has been disclosed. This
Iron-catalyzed 2-acylbenzothiazole formation from aryl ketones and benzothiazoles using oxygen as oxidant
作者:Saiwen Liu、Ru Chen、Hui Chen、Guo-Jun Deng
DOI:10.1016/j.tetlet.2013.05.050
日期:2013.7
A convenient and efficient method for the synthesis of 2-acylbenzothiazoles from benzothiazoles and aromatic ketones using oxygen as oxidant is described. FeCl3·6H2O showed the best reactivity among the various iron salts investigated. Various functional groups were well tolerated under the optimized reaction conditions.