1,2-Bis(4-methylphenyl)-1,2-ethanedione → 3-Amino-5,6-bis(4-methylphenyl)-1,2,4-triazine

Participants

Reaction Steps

A stirred mixture of 4,4′-dimethylbenzil (2.38 g; 0.01 mol), aminoguanidine bismesylate (3.33 g; 0.0125 mol) and ethanol (10 cm3) was heated under reflux until no starting material remained (4 hrs) when a cream solid was deposited. The mixture was evaporated to half volume and basified with 880 ammonia+water (1:1; 4 cm3). On standing, bight yellow prisms were deposited. The product was filtered off, washed with ethanol+water (1:1) and dried in vacuo at 450.

Provenance & Evidence