N-bromobutanimide → 5-Bromo-2,6-diphenylpyrimidin-4-ol

Participants

Reaction Steps

To a suspension of 13.37 g (56 mmol) of 2,6-diphenyl-4(3H)-pyrimidinone and 200 mL glacial acetic acid was added 15.1 g (84.8 mmol) of N-bromosuccinimide and the mixture was left to stir at room temperature for 60 h. The reaction was poured onto 100 g crushed ice and vacuum filtered, washing well with water, then air dried to yield 8.85 g (48%) 5-bromo-2,6-diphenyl-4(3H)-pyrimidinone, as a white solid. 1H-NMR (d6DMSO) δ 7.55(6H,m); 7.75(2H,m); 8.15(2H,m).

Provenance & Evidence