Benzothiazoles. V
Nitration of 2-Methyl- and 2-Methyl-6-acetylaminobenzothiazoles
1952 年 72 巻 6 号 p. 745-747
詳細
1952 年 72 巻 6 号 p. 745-747
(1) Nitration of 2-methylbenzothiazole gave 6-nitro-2-methylbenzothiazole, m. p. 165° (yield, 83%), along with a small amount of other mononitrobenzothiazole, m. p. 117° (yield, 3.7%). The product of m. p. 117° melted at 96-116° when mixed with 7-nitro-2-methylbenzothiazole, m. p. 120°.
(2) Nitration of 2-methyl-6-acetylaminobenzothiazole gave 7-nitro-6-acetylamino-2-methylbenzothiazole in practically a qantitative yield. No other isomers, especially 5-nitro-6-acetylamino-2-methylbenzothiazole, were obtained.
