HCID 57998845, compound → HCID 57998831, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3,4-dichlorophenyl lead triacetate (1.63 g), 8-hydroxy-5H-pyrido[2,3-b]pyrazin-6-one (0.254 g) and 4-dimethylaminopyridine (DMAP) (0.549 g) in anhydrous dimethylsulfoxide (10 mL) under a nitrogen atmosphere was heated to 60° C. for four hours. The reaction mixture was then allowed to cool to ambient temperature and stored at ambient temperature for 16 hours. The reaction mixture was diluted with ethyl acetate. The mixture was washed with aqueous hydrochloric acid (1M) and water, and the organic layer concentrated to give 7-(3,4-dichlorophenyl)-8-hydroxy-5H-pyrido[2,3-b]pyrazin-6-one (0.13 g) which was used without further purification.

Provenance & Evidence