A simple and practical method for the synthesis of 2-methylenebenzothiazoles by coupling of benzothiazole salts and 4-hydroxycoumarins under mechanochemical conditions has been developed. Some of the products exhibited strong luminescence and typical AIE properties, indicating their potential as fluorescent materials.
The ring-opening of a benzothiazole salt serves as a sulfur source for the bifunctional reaction of styrene, enabling the simultaneous formation of new C–S, C–O, and CO bonds following C–S bond cleavage.
Copper-catalyzed selective difunctionalization of N-heteroarenes through a halogen atom transfer radical process
作者:Hui-Lin Fang、Qiu Sun、Rong Ye、Jing Sun、Ying Han、Chao-Guo Yan
DOI:10.1039/c9nj03471d
日期:——
A highly regioselective Cu-catalyzed difunctionalization of different N-heteroarene salts such as quinolinium and benzothiazolim salts was developed with ether and X− (X = Br, Cl) as the halogen source under mild conditions. This transformation involved the combination of oxidative coupling, selective free radical resonance and a copper-catalyzed halogen atom-transfer radical process. The regiochemistry