| 摘要 |
A process for preparing a pyrazolecarboxylic acid compound of the formula (II): <IMAGE> (II) wherein Y and Z each represent a hydrogen, a halogen, a nitro, a cyano, COOR1, NR1R2, CONR1R2, SR1, SO2NR1R2, SO2R3, R3CO, OR4, CHX2 or CX3; A represents a hydrogen, an alkyl having 2 to 4 carbons, a phenyl, a pyridyl or OR5; where R1 and R2 each represent a hydrogen or an alkyl having 1 to 10 carbons; R3 represents an alkyl having 1 to 10 carbons; R4 represents a hydrogen, an alkyl having 1 to 10 carbons, a phenyl, CHF2, CF3 or CF3CH2; R5 represents an alkyl having 1 to 10 carbons; and X represents a halogen, which comprises oxidizing a pyrazole compound of the formula (I): <IMAGE> (I) wherein Y, Z and A have the same meanings as above, by contacting the compound of formula (I) with an oxygen-containing gas in the presence of a metal catalyst at 20 DEG to 200 DEG C., the partial pressure of the oxygen-containing gas being from atmospheric pressure to 80 kg/cm2 and the metal catalyst is in an amount of 0.1 to 20 gram-atom based on 100 moles of the compound of formula (I) and is at least one compound selected from the group consisting of iron compounds, cobalt compounds, nickel compounds, manganese compounds, cerium compounds and zirconium compounds.
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