A method for producing a pyrazole compound of the general formula (5) includes reacting a 2-acyl-3-aminoacrylic acid ester of the general formula (1) with a hydrazine of the general formula (4) in the presence of a base
where R
1
, R
2
, R
3
and R
4
each independently represent an alkyl group
wherein R
5
represents an alkyl group or an aryl group
wherein R
1
, R
4
and R
5
have the same meanings as above.
It is possible by this production method to produce the 1,3-disubstituted pyrazol-4-carboxylic acid ester at a high yield and selectivity and with less discoloration.
A method for producing a pyrazole compound of the general formula (5) includes reacting a 2-acyl-3-aminoacrylic acid ester of the general formula (1) with a hydrazine of the general formula (4) in the presence of a base
where R1, R2, R3 and R4 each independently represent an alkyl group
wherein R5 represents an alkyl group or an aryl group
wherein R1, R4 and R5 have the same meanings as above.
It is possible by this production method to produce the 1,3-disubstituted pyrazol-4-carboxylic acid ester at a high yield and selectivity and with less discoloration.