METHOD FOR REGIOSELECTIVE SYNTHESIS OF 1-ALKYL-3-HALOGENALKYLPYRAZOLE-4-CARBOXYLIC ACID DERIVATIVES Russian patent published in 2013 - IPC C07D231/14

Abstract RU 2498978 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method for regioselective synthesis of 1-alkyl-3-halogenalkylpyrazole-4-carboxylic acid derivatives through cyclisation of 2,3-disubstituted acrylic acid derivatives with hydrazines in the presence of carbonyl compounds.

EFFECT: high regioselectivity of synthesis.

6 cl, 2 ex

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RU 2 498 978 C2

Authors

Patsenok Sergij

Lui Norbert

Neeff Arnd

Dates

2013-11-20—Published

2009-02-26—Filed