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The synthesis of 1-[(substituted)pyrazol-5-yl]-iminomethyl-2-nitroiminoimidazolidine and its derivatives

โœ Scribed by Wei-Qiang Chen; Gui-Yu Ji


Publisher
Journal of Heterocyclic Chemistry
Year
2001
Tongue
English
Weight
40 KB
Volume
38
Category
Article
ISSN
0022-152X

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โœฆ Synopsis


Abstract

In this article 1โ€[(substituted)pyrazolโ€5โ€yl]iminomethylโ€2โ€nitroimino imidazolidines (II) and their derivatives were synthesized. All the compounds were verified by elemental analysis, ^1^H NMR and IR. In the reaction of II with halides, two different results were observed.


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## Abstract The reaction of ethyl 4โ€(benzofuranโ€2โ€yl)โ€2,4โ€dioxobutanoate **2** with two moles of hydrazine hydrate afforded 5โ€(benzofuranโ€2โ€yl)โ€1__H__โ€pyrazoleโ€3โ€carbohydrazide **4a**, while its reaction with equimolar amount of phenylhydrazine gave ester **3b** which then converted to 5โ€(benzofura