A Facile Method to 1,4-Diacyl Semicarbazides: Syntheses of 1-Aryloxyacetyl-4-(4-Chlorobenzoyl)-Thiosemicarbazides and Semicarbazides

Xicun Wang Department of Chemistry, Northwest Normal University, Lanzhou, Gansu, 730070, P.R. China

Zheng Li Department of Chemistry, Northwest Normal University, Lanzhou, Gansu, 730070, P.R. China

Yuxia Da Department of Chemistry, Northwest Normal University, Lanzhou, Gansu, 730070, P.R. China

Jichou Chen Department of Chemistry, Northwest Normal University, Lanzhou, Gansu, 730070, P.R. China

Abstract

A facile method to diacyl semicarbazides is described. Reactions of 4-chlorobenzoyl chloride with ammonium thiocyanate first, then with aryloxyacetic acid hydrazides under phase transfer catalysis give 1-aryloxyacetyl-4-(4-chlorobenzoyl)-thiosemicarbazides (Ia-h). Compounds Ia-h on treatment with potassium iodate under reflux result in the formation of 1-aryloxyacetyl-4-(4-chlorobenzoyl)-semicarbazides (IIa-h) in excellent yields.

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A Facile Method to 1,4-Diacyl Semicarbazides: Syntheses of 1-Aryloxyacetyl-4-(4-Chlorobenzoyl)-Thiosemicarbazides and Semicarbazides

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A Facile Method to 1,4-Diacyl Semicarbazides: Syntheses of 1-Aryloxyacetyl-4-(4-Chlorobenzoyl)-Thiosemicarbazides and Semicarbazides

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