Synthesis of 5-Mercaptoalkylthiopyrazolyl-and 3-Mercaptoalkylthioisoxazolyl)-1,2,4-triazoles by Ring Chain Transformation |
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| Authors: | Zhen-Nian Huang Zheng Ming Li |
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| Affiliation: | 1. Department of Chemistry , Peking University , Beijing , 100871;2. Institute of Elemento-Organic Chemistry, Nankai University , Tianjin, 300071, P.R. China |
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| Abstract: | ![]()
Cyclic α-oxo-α-(1,2,4-triazolyl)ketene S,S-acetals 1a-e react with hydrazine affording the substituted pyrazolyl-1,2,4-triazoles 3a-e. With hydroxylamine hydrochloride under basic conditions the substituted isoxazolyl-1,2,4-triazoles 5a-c are obtained. |
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