37859-30-6Relevant articles and documents
S 8-Mediated Cyclization of Bis(2-aminophenyl) Disulfide/Diselenide with Arylacetylenes/Styrenes: Access to 2-(Arylmethyl)-1,3-benzothiazoles/benzoselenazoles
Gan, Haifeng,Feng, Caojian,Zhao, Lihuan,Cao, Mengru,Wu, Hongli
supporting information, p. 70 - 75 (2021/11/17)
A novel S8-mediated approach to benzothiazoles/benzoselenazoles from bis(2-aminophenyl) disulfides/diselenides and phenylacetylenes or styrenes has been developed. 2-(Arylmethyl)-1,3-benzoselenazoles were comprehensively synthesized for the first time. The reactions proceeded in moderate to excellent yields, and with a gramscale application.
Elemental Sulfur-Promoted Benzoxazole/Benzothiazole Formation Using a C=C Double Bond as a One-Carbon Donator
Chen, Xuecheng,Han, Shiqing,Hu, Liang,Liu, Yafei,Luo, Yue,Pan, Bin,Peng, Yalan,Zhang, Jun,Zhang, Yurong
, p. 14485 - 14492 (2021/11/12)
An efficient method to assemble diverse benzoxazoles/benzothiazoles in good yields was developed via oxidative cyclization with 2-aminothiophenols or 2-iodoanilines as raw materials. In this protocol, elemental sulfur was used as the effective oxidant and C atoms on the C=C double bond were introduced as a one-carbon donator.
Di- tert-butyl Peroxide-Mediated Radical C(sp2/sp3)-S Bond Cleavage and Group-Transfer Cyclization
Luo, Kai,Yang, Wen-Chao,Wei, Kai,Liu, Yue,Wang, Jun-Ke,Wu, Lei
supporting information, p. 7851 - 7856 (2019/10/11)
A novel strategy of cascade radical C(sp2/sp3)-S bond cleavage and group-transfer cyclization is disclosed. Triggered by alkyl radicals, varieties of 2-isocyanoaryl thioethers containing aliphatic, aryl, and heteroaromatic groups can be cleaved and precisely reinstalled to give benzothiazole derivatives. Mechanistic studies reveal that the cascade reaction undertakes an intermolecular pathway, and the inner radical sources (R radicals) exhibit high priority over those of methyl radical origin from di-tert-butyl peroxide.
