N-bromobutanimide → 5,6-Dibromo-2,3-dihydrobenzofuran

Participants

Reaction Steps

NBS (450 mg, 2.53 mmol) was added to a solution of 6-bromo-2,3-dihydrobenzo[b]furan (137) (504 mg, 2.53 mmol) in 15 ml ACN. The reaction mixture was stirred overnight at r.t. The yellow solution was poured into ice-water, extracted with EA. Org. phase was washed with aq. sodium bicarbonate and brine subsequently. After dried over sodium sulfate the org. phase was concentrated to give 676 mg (purity ca. 90%) title compound as dark oil which solidified after standing at r.t.

Provenance & Evidence