Graphene oxide-catalyzed synthesis of benzothiazoles with amines and elemental sulfur via oxidative coupling strategy of amines to imines
作者:Haiping He、Dehao Duan、Hong Li、Yifei Wei、Liang Nie、Bo Tang、Hanyu Wang、Xiaowei Han、Panpan Huang、Xiangjun Peng
DOI:10.1016/j.tet.2021.132624
日期:2022.1
The graphene oxide-catalyzed coupling and cyclization reactions of primary amines with elemental sulfur was developed to afford various optically property benzothiazoles. This coupling and cyclization strategies proceeded under the oxidant system graphene oxide/O2 and constructed carbon-heteroatom (N, S) bonds with amines and elemental sulfur. Due to benzothiazoles as common chromophores, these products
开发了氧化石墨烯催化的伯胺与元素硫的偶联和环化反应,以提供各种光学性质的苯并噻唑。这种偶联和环化策略在氧化剂体系氧化石墨烯/O 2下进行,并与胺和元素硫构建了碳-杂原子(N,S)键。由于苯并噻唑是常见的发色团,这些产品表现出有趣的荧光特性,包括出色的斯托克斯位移(高达 161 nm)和量子产率(高达 74%)。利用产品在不同溶剂中的独特荧光响应,β-萘噻唑4a在 1,2-二氯乙烷中表现出优异的聚集诱导发射特性,是四氢呋喃中的 60 倍。