Sun, Qing’s team published research in Chemical Communications (Cambridge, United Kingdom) in 2022 | CAS: 95-24-9

6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9) belongs to thiazoles. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities.Quality Control of 6-Chlorobenzothiazol-2-ylamineThiazoles can also be used as protected formyl groups, which can be released in later stages of complex natural product synthesis.

《Facile preparation of dihydro-1,4-benzothiazine derivatives via oxidative ring-expansion of 2-aminobenzothiazoles with olefins》 was published in Chemical Communications (Cambridge, United Kingdom) in 2022. These research results belong to Sun, Qing; Bao, Xiaoguang. Quality Control of 6-Chlorobenzothiazol-2-ylamine The article mentions the following:

A concise and efficient approach to prepare dihydro-1,4-benzothiazine derivatives I (R1 = H, 7-Br, 5,7-difluoro, 5-OMe, etc.; R2 = Ph, naphthalen-2-yl, ethyloxidanyl, etc.; R3 = H, Me, Ph), Et 9-cyano-3,3a,9,9a-tetrahydro-2H-benzo[b]furo[2,3-e][1,4]thiazine-6-carboxylate and Et 10-cyano-4b,10,10a,11-tetrahydrobenzo[b]indeno[2,1-e][1,4]thiazine-7-carboxylate is described via oxidative ring-expansion of 2-aminobenzothiazoles II with olefins R2CH=CHR3 under metal-free conditions. This protocol is applicable for a wide range of readily accessible 2-aminobenzothiazoles II and olefins with moderate-to-good yields. The [4+2] heteroannulation between the intermediacy of oxidative ring-opening of 2-aminobenzothiazoles II and olefins is suggested to rationalize the formation of the product. In the part of experimental materials, we found many familiar compounds, such as 6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9Quality Control of 6-Chlorobenzothiazol-2-ylamine)

6-Chlorobenzothiazol-2-ylamine(cas: 95-24-9) belongs to thiazoles. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities.Quality Control of 6-Chlorobenzothiazol-2-ylamineThiazoles can also be used as protected formyl groups, which can be released in later stages of complex natural product synthesis.

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica