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
[EN] BENZAZOLE DERIVATIVES AS HISTAMINE H4 RECEPTOR LIGANDS<br/>[FR] UTILISATION DE DÉRIVÉS DE BENZAZOLE EN TANT QUE LIGANDS DES RÉCEPTEURS H4 DE L'HISTAMINE
申请人:BIOPROJET SOC CIV
公开号:WO2012041860A1
公开(公告)日:2012-04-05
The present patent application concerns new Iigands of the H4-receptor of formula (I), their process of preparation and their therapeutic use.
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
Exogenous Photosensitizer-, Metal-, and Base-Free Visible-Light-Promoted C–H Thiolation via Reverse Hydrogen Atom Transfer
作者:Ze-Ming Xu、Hong-Xi Li、David James Young、Da-Liang Zhu、Hai-Yan Li、Jian-Ping Lang
DOI:10.1021/acs.orglett.8b03679
日期:2019.1.4
This reaction induces the cyclization of thiobenzanilides to benzothiazoles. The substrate absorbs visible light, and its excited state undergoes a reverse hydrogen-atom transfer (RHAT) with 2,2,6,6-tetramethylpiperidineN-oxyl to form a sulfur radical. The addition of the sulfur radical to the benzene ring gives an aryl radical, which then rearomatizes to benzothiazole via RHAT.