Hydrochloric Acid → HCID 54263071, compound

Participants

Reaction Steps

To a solution of 4.44 g of 3-[4-(2-carboxyethyl)phenyl]-1-phenyl-1,2-propanedione in 25 ml of dry dimethylformamide, cooled in an ice-bath, was added 11 ml of dimethylformamide dimethyl acetal. After stirring at room temperature for 15 min., the reaction mixture was poured onto 300 ml of crushed ice and the reaction mixture was acidified with 25 ml of 1N hydrochloride acid. The mixture was extracted with methylene chloride. The layers were separated and the organic phase was washed with water, dried, filtered and evaporated under vacuum. Recrystallization of the residue from methylene chloride-ether gave 3.95 g (75%) of 2-[4-(2-carboxyethyl)phenyl]-1-dimethylamino-4-phenyl-1-butene-3,4-dione as yellow crystals after drying at 50° C. for 3 hrs.

Provenance & Evidence