N-bromobutanimide → HCID 89541876, compound

Participants

Reaction Steps

A mixture of tert-butyl 1-(4-(8-phenyl-4H-pyrido[2,3-b][1,2,4]triazolo[4,3-d][1,4]oxazin-7-yl)phenyl)cyclobutylcarbamate (200 mg, 0.404 mmol) and 1-bromopyrrolidine-2,5-dione (114.9275 mg, 0.646 mmol) in DCM (12 ml) and CCl4 (18 ml) was heating at 50 degree for 24 h. The mixture was concentrated and the residue was partitioned between ethyl acetate (40 ml) and water (40 ml). The organic phase was separated and the aqueous phase was extracted with ethyl acetate (30 ml). The combined organic phase was washed with water (50 ml) brine (30 ml) and concentrated to give product 159 mg. 1H NMR (500 MHz, CDCl3): 8.55 (s, 1H), 7.22-7.35 (m, 9H), 5.58 (s, 2H), 5.1 (br, 1H), 2.4-2.5 (m, 4H), 2.01-2.11 (m, 1H), 1.79-1.89 (m, 1H), 1.24-1.43 (br, 9H).

Provenance & Evidence