Method for the regioselective synthesis of...

Details Method for the regioselective synthesis of... Method for the regioselective synthesis of...

C - Chemistry, Metallurgy

07

D

C07D 231/12 (2006.01) C07C 251/80 (2006.01)

Patent

CA 2716381

The present invention relates to a process for the regioselective synthesis of 1-alkyl-3-halo- alkylpyrazole-4-carboxylic acid derivatives by cyclization of 2,3 - disubstituted acrylic acid derivatives, and to the hydrazones formed as intermediates in the process.

L'invention concerne un procédé de synthèse stéréosélective de dérivés d'acide 1-alkyl-3-haloalkyl-pyrazol-4-carbonique par cyclisation de dérivés 2,3-disubstitués d'acide acrylique, ainsi que les hydrazones qui apparaissent au cours du procédé sous forme de produits intermédiaires.

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