Reactivity of some substituted 5-methyl[1,2,4]triazolo[3,4-b]benzothiazoles and preparation of a new tetracyclic heterocycle 5-methyl-2-phenylpyrrolo[1′,2; 1,5][1,2,4]triazolo[3,4-b]benzothiazole
INDIAN JOURNAL OF CHEMISTRY SECTION B-ORGANIC CHEMISTRY INCLUDING MEDICINAL CHEMISTRY
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1998年
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37卷
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09期
关键词:
D O I:
暂无
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
5-Methyl[1,2,4]triazolobenzothiazole 2 has been synthesized by the condensation of 2-hydrazino-4-methylbenzothiazole 1 with formic acid. Corn-pound 2 with N-methylaniline and formaldehyde results in Mannich base 8. The styryl derivative II in cis-form is obtained from 10 with anisaldehyde. A new tetracyclic system phenylpyrrolotriazolo-benzothiazole 13 is synthesized from 10 by the action of phenacyl bromide.