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OALib Journal期刊
ISSN: 2333-9721
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Synthesis of new heterocyclic compounds using 2-(4,7-dichloro-3,3-dimethyl-indolin-2-ylidene)malonaldehyde

Keywords: Vilsmeier reagent , Malondialdehyde , Pyrazole , Pyrimidone , Thiopyrimidone

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Abstract:

1-(2,5-Dichlorophenyl)hydrazine was converted via Fischer synthesis with isopropylmethylketone into 4,7-dichloro-2,3,3-trimethyl-3H-indole. Exposure of the indolenine to the vilsmeier reagent produced amino methylene malondialdehyde which reacted with hydrazine, arylhydrazine, urea, cyanoacetamide and thiourea to give pyrazols, pyrimidones and thiopyrimidone, respectively.

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