On August 1, 1980, Gupta, R. R.; Ojha, K. G.; Kalwania, G. S.; Kumar, M. published an article.SDS of cas: 38939-88-7 The title of the article was A convenient and single step synthesis of substituted 4H[1,4]-benzothiazines. And the article contained the following:
Benzothiazines I (R = H, Cl, OMe; R1 = H, Me; R2 = H, Cl, Br, Me, OMe, OEt; R3 = Me, Ph, OEt; R4 = Me, Ph) were obtained in 45-75% yield by condensing 2-aminobenzenethiols with R4COCH2COR3. Some of the aminobenzenethiols were prepared from anilines. The experimental process involved the reaction of 2-Chloro-4-methyl-1-nitrobenzene(cas: 38939-88-7).SDS of cas: 38939-88-7
The Article related to benzothiazine, aminobenzenethiol active methylene cyclocondensation, Heterocyclic Compounds (More Than One Hetero Atom): Thiazines (Including Cephalosporins) and other aspects.SDS of cas: 38939-88-7
Referemce:
Chloride – Wikipedia,
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