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Growing Science » Current Chemistry Letters » Vilsmeier-Haack reagent: A facile synthesis of 2-(4-chloro-3,3-dimethyl-7-phenoxyindolin-2-ylidene)malonaldehyde and transformation into different heterocyclic compounds

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Current Chemistry Letters

ISSN 1927-730x (Online) - ISSN 1927-7296 (Print)
Quarterly Publication
Volume 2 Issue 4 pp. 187-196 , 2013

Vilsmeier-Haack reagent: A facile synthesis of 2-(4-chloro-3,3-dimethyl-7-phenoxyindolin-2-ylidene)malonaldehyde and transformation into different heterocyclic compounds Pages 187-196 Right click to download the paper Download PDF

Authors: Laya Roohi, Arash Afghan, Mehdi M. Baradarani

Keywords: cyanoacetamide, cyanopyridone, enamines, Fischer indole synthesis malonaldehydes, pyrazoles, Vilsmeier-Haack reagent

Abstract: 2-(5-Chloro-2-phenoxyphenyl)hydrazine was converted to corresponding 3H-indole by Fischer method utilizing the isopropyl methyl ketone in acetic acid. The reaction of 3H-indole with Vilsmeier-Haack reagent furnished aminomethylene malonaldehyde in excellent yield while the reactions of malonaldehyde with hydrazine, arylhydrazines, amines, cyanoacetamide and hydroxylamine hydrochloride, led to the corresponding pyrazole derivatives, enamines, cyanopyridone, and cyanoacetamide derivatives respectively.

How to cite this paper
Roohi, L., Afghan, A & Baradarani, M. (2013). Vilsmeier-Haack reagent: A facile synthesis of 2-(4-chloro-3,3-dimethyl-7-phenoxyindolin-2-ylidene)malonaldehyde and transformation into different heterocyclic compounds.Current Chemistry Letters, 2(4), 187-196.

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Journal: Current Chemistry Letters | Year: 2013 | Volume: 2 | Issue: 4 | Views: 3406 | Reviews: 0

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