N-bromobutanimide → 2-Bromomethyl-7-nitrobenzo[b]furan

Beteiligte Stoffe

Reaktionsschritte

A mixture of 2-methyl-7-nitrobenzo[b]furan (2.66 g), N-bromosuccinimide (3.21 g) and 2,2'-azobis-(2,4-dimethyl-4-methoxyvaleronitrile) (270 mg) in dichloromethane (30 ml) was refluxed for 1 hour. The reaction mixture was washed with aqueous saturated sodium bicarbonate and brine, dried over sodium sulfate and concentrated in vacuo. The residue was crystallized from diethyl ether to give 2-bromomethyl-7-nitrobenzo[b]furan (3.3 g).

Herkunft & Nachweise