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《Journal of Beijing Institute of Light Indusry》 2002-04
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SYNTHESIS OF 1H-3-n-PROPYL PYRAZOLE-5-CARBOXYLIC ACID ETHYL ESTER

XU Bao cai 1, ZHOU Zhi ming 2, YU Hai 1 (1. College of Chemical and Environment Engineering, Beijing Technology and Business University, Beijing 100037,China; 2. College of Chemical and Environment Engineering, Beijing Institute of Technology, Beijing 100081, China)  
The Claisen condensation of 2 pentanone with diethyloxalate yielded sodium 1 ethoxycarbonyl 3 oxo hexanolate. Treatment of this sodium compound with the mixture of hydrazine hydrate and hydrazine sulfate solution gave 1H 3 n propyl pyrazole 5 carboxylic acid ethyl ester. The effective conditions of each step were acquired through orthogonal test or single factor test,and the reaction mechanism was also studied. The structures of the products were identified by analysis of IR spectrometry.
【CateGory Index】: TQ463
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