Synthesis of 1-ethylpyrazole-4-carbaldehydes, 1, 1'-methylenebis (3, 5-dimethylpyrazole-4-carbaldehyde), and Schiff bases derived therefrom

AS Potapov, AI Khlebnikov, VD Ogorodnikov

Index: Potapov; Khlebnikov; Ogorodnikov Russian Journal of Organic Chemistry, 2006 , vol. 42, # 4 p. 550 - 554

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Citation Number: 9

Abstract

Abstract New pyrazole-containing aldehydes, 1-ethylpyrazole-4-carbaldehyde, 1-ethyl-3, 5- dimethylpyrazole-4-carbaldehyde, and 1, 1'-methylenebis (3, 5-dimethylpyrazole-4- carbaldehyde), were synthesized by the Vilsmeier reaction. Their reactions with primary amines (aniline, hydrazine, ethylenediamine, p-phenylenediamine, benzidine) gave the corresponding Schiff bases.