Butanedione → HCID 589661, compound

Participants

Reaction Steps

A mixture of 37.2 ml (36.3 g, 0.3 moles) of 2,6-dimethylaniline, 13.1 ml (12.9 g, 0.15 moles) of 2,3-butanedione and 100 ml of ethanol is boiled for 12 hours. The solvent is evaporated under reduced pressure, 80 ml of water and 20 ml of acetic acid are added to the residue, and the resulting mixture is stirred for 6 hours at 0° to ±5° C. The mixture is allowed to stand overnight, thereafter the separated precipitate is filtered off, washed with water and dried. 34.0 g (77.5%) of crude 2,3-bis(2',6'-dimethylphenyl-imino)-butane are obtained; m.p.: 78°-86° C. After recrystallization from ethanol 25.1 g (57.2%) of the pure substance, melting at 88°-90° C., are obtained.

Provenance & Evidence