Ammonium Hydroxide → 5-methyl-6-phenyl-3(2H)-Pyridazinone

Participants

Reaction Conditions

Reaction Steps

A 10.0 g. portion of 5-methyl-6-p-bromophenyl-3(2H)-pyridazinone and 1.0 g. of 10% palladium on carbon catalyst in 150 ml. of ethanol and 50 ml. of ammonium hydroxide is shaken under 40 lb. of hydrogen pressure for 4 hours in a Parr bottle, heated to 50° C. with an outside jacket. The reaction mixture is suction filtered and the filtrate concentrated to a white solid which is washed with water and air dried to afford 5-methyl-6-phenyl-3(2H)-pyridazinone as white crystals.

Provenance & Evidence