C-Alkyl-4-nitropyrazoles from 5-Chloro-4-nitropyrazoles.
β Scribed by V. A. Savosik; G. V. Bozhenkov; A. N. Mirskova; G. G. Levkovskaya
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 20 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
Abstract
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
Synthesis of 3-and 5-Hydrazino-1-methyl-4-nitropyrazoles. -The title 3(5)-hydrazinopyrazoles (II) and (IV), resp., are obtained by nucleophilic substitution of the 5-bromo group in compound (I) or the 3-nitro group in compound (III) with hydrazine.
The primary radical anions of substrate in the reactions of vicarious nucleophilic substitution of hydrogen in 1-methyl-4-nitropyrazole with 1,1,1-trimethylhydrazinium iodide and 4-amino-1,2,4-triazole in t-BuOK-DMSO were observed and identified by EPR monitoring. The probable mechanism of the subst