Preparation of 4-methyl-2-pyrazolin-5-ones

Details Preparation of 4-methyl-2-pyrazolin-5-ones Preparation of 4-methyl-2-pyrazolin-5-ones

1975-05-30

1976-12-28

Moyer, Donald B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D23108

Patent

active

040001563

ABSTRACT:
A method is described for the preparation of a 1-substituted 4-methyl-2-pyrazolin-5-one by catalytic hydrogenation under pressure and simultaneous methylation by means of paraformaldehyde of the appropriate 1-substituted 2-pyrazolin-5-one in a medium of an inert organic solvent comprising ammonium acetate.

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