41230-20-0Relevant articles and documents
Benzothiazole Synthesis: Mechanistic Investigation of an in Situ-Generated Photosensitizing Disulfide
Hwang, Ho Seong,Lee, Sumin,Han, Sung Su,Moon, Yu Kyung,You, Youngmin,Cho, Eun Jin
, p. 11835 - 11843 (2020/10/23)
The use of a visible light absorbing intermediate as a photosensitizer makes a chemical process simple and sustainable, obviating the need for the use of chemical additives. Herein, the formation of a photosensitizing disulfide in benzothiazole synthesis from 2-Aminothiophenol and aldehydes was proposed and confirmed through in-depth mechanistic studies. A series of photophysical and electrochemical investigations revealed that an in situ-generated disulfide photosensitizes molecular oxygen to generate the key oxidants, singlet oxygen and superoxide anion, for the dehydrogenation step.
Selective Construction of 2-Substituted Benzothiazoles from o-Iodoaniline Derivatives S8 and N-Tosylhydrazones
Huang, Yubing,Zhou, Peiqi,Wu, Wanqing,Jiang, Huanfeng
, p. 2460 - 2466 (2018/02/23)
Selective construction of 2-substituted benzothiazoles from o-iodoaniline derivatives S8 and N-tosylhydrazone via a copper-promoted [3 + 1 + 1]-type cyclization reaction has been realized. In the protocol, the carbon atom on N-tosylhydrazone could be regulated to construct benzothiazole by changing the reaction system. Furthermore, the transformation has achieved the construction of multiple carbon-heteroatom bonds.
Iron(II) bromide-catalyzed oxidative coupling of benzylamines with ortho-substituted anilines: Synthesis of 1,3-benzazoles
Gopalaiah, Kovuru,Chandrudu, Sankala Naga
, p. 5015 - 5023 (2015/03/03)
An iron(II) bromide-catalyzed oxidative coupling of benzylamines with 2-amino/hydroxy/mercapto-anilines has been developed, allowing the synthesis of a diversity of substituted 1,3-benzazoles in good to excellent yields. This transformation is compatible with a wide range of functional groups. The method is practical, economical and employs molecular oxygen as an oxidant.