4-FLUORO-5-OXYPYRAZOLE DERIVATE AND PREPARATION THEREOF

摘要

4-Fluoro-5-oxypyrazole derivative having the formula

wherein R1, represents hydrogen atom or a lower alkyl group: and R2 represents a lower alkyl or phenyl group or a phenyl group having one or more substituent of fluorine or chlorine atom or a lower alkyl or dimethylamino group as effective intermediates for agricultural and pharmaceutical chemicals.