A. Ahmadi, B. Nahri-Niknafs
Nov 1, 2014
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Journal
Quarterly Journal of Applied Chemical Research
Abstract
In this study an improved process for the production of 5-Methyl-1,2,4-triazolo(3,4-b) benzothiazole fungicide (IV) is described. Firstly, (2-methylphenyl) thiourea (I), 2-amino- 4-methylbenzothiazole (II) and 2-hydrazino-4-methylbenzothiazole (III) as intermediates consequently were prepared. Then IV is synthesized by the reaction of III with formic acid in the presence of p-toluenesulfonic acid catalyst. The purity of the synthesized compounds was confirmed by CHN analysis and the structures verified on the basis of IR, 1 H-NMR and mass spectral data.