Hexane → Phenyl(5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)methanone

Participants

Reaction Conditions

Reaction Steps

Five grams of the cinnamaldehyde benzoylhydrazone was suspended in 20 ml of diphenyl ether, followed by stirring at 220° C. for 3 hours. After cooling, the reaction liquid was poured into 100 ml of hexane for the separation of insoluble matter. The insoluble matter was filtered off and recrystallized from a methanol-water solution. Thus there was obtained 3.8 g of 1-benzoyl-5-phenyl-2-pyrazoline (mp. 105°-106° C.) as the desired product. The yield was 76.0%.

Provenance & Evidence