| 摘要 |
<p>A process for producing N-substituted 3-hydroxypyrazoles of formula (I) in which R1 is optionally substituted alkyl, aryl or heteroaryl, and R2, R3 are hydrogen, cyano, halogen and optionally substituted alkyl, aryl or heteroaryl, by the oxidation of a corresponding pyrazolidin-3-one.</p> |
