S. A. Voznesensky, L. I. Belen'kii, A. A. Dudinov, M. I. Struchkova, M. M. Krayushkin, “An unexpected reaction of 3-aryl-2-pyrazolin-5-ylacetohydrazides with chlorine: formation of 3-aryl-4-chloro-5-trichloromethylpyrazoles”, Mendeleev Commun., 1998, Volume 8, Issue 1,Pages <nobr>14

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An unexpected reaction of 3-aryl-2-pyrazolin-5-ylacetohydrazides with chlorine: formation of 3-aryl-4-chloro-5-trichloromethylpyrazoles

S. A. Voznesensky, L. I. Belen'kii, A. A. Dudinov, M. I. Struchkova, M. M. Krayushkin

N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation

Abstract: In attempting to synthesize 3-aryl-2-pyrazolin-5-ylacetyl chlorides by chlorination of the respective hydrazides, 3-aryl-4-chloro-5-trichloromethylpyrazoles have been obtained; a probable mechanism for the transformation is discussed.

Language: English

DOI: 10.1070/MC1998v008n01ABEH000897