CF3O-CONTAINING ENAMINOKETONES AND THEIR UTILIZATION FOR PREPARATION OF CF3O-CONTAINING PYRAZOLES

摘要

PROBLEM TO BE SOLVED: To provide a generally applicable and economically viable process which can be implemented on the industrial scale for preparing novel pyrazole derivatives.SOLUTION: The present invention provides a process for preparing enaminoketones represented by formula I by reacting ketones represented by formula II with an aminoformylation reagent. [Ris C5-C10 aryl, optionally substituted by 1 to 5 halogen atoms, or C5-C10 aryl having O or N; Rand Rare C1-6 alkyl, C5-10 aryl and the like].SELECTED DRAWING: None