A halogen-bond promoted ring-opening methylation of benzothiazoles has been developed using dimethyl sulphite as a methylating reagent in the presence of a base. This approach represents a simple and efficient synthesis of N-methyl-N-(o-methylthio)phenyl amides, and features direct construction of both N–Me and S–Me bonds in a one-pot reaction through the decomposition of easily prepared benzothiazoles
Es wurde 5-Amino-benzthiazol synthetisiert, in Form seines Hydrochlorids isoliert und auf seine tuberkulostatische Wirkung geprüft.
合成了5-氨基-苯并噻唑,以其盐酸盐的形式分离,并测试了其抑菌作用。
Catalyst-free generation of acyl radicals induced by visible light in water to construct C–N bonds
作者:Maogang Ran、Jiaxin He、Boyu Yan、Wenbo Liu、Yi Li、Yunfen Fu、Chao-Jun Li、Qiuli Yao
DOI:10.1039/d0ob02364g
日期:——
for the direct generation of acyl radicals fromα-diketones, and its selective conversion of nitrosoarenes to hydroxyamides or amides with AcOH or NaCl as an additive. The reaction was carried out under mild conditions in water with purple LEDs as the light source. A broad scope of substrates was demonstrated. Mechanistic experiments indicate that α-diketones cleave to give acyl radicals, with hydroxyamides