Hydrogen Bromide → HCID 66758260, compound

Participants

Reaction Steps

To a solution of the product of step 1 (4.3 g) in acetic acid (30 ml) was added 48% aqueous HBr (25 ml) at 10° C. The reaction.mixture was warmed to room temperature, and stirred for 12 hours. Water and ethyl acetate were added to the reaction mixture and neutralized with dilute NaOH solution. The organic layer was separated and washed with saturated aqueous sodium chloride, and dried over magnesium sulfate. The solvent was distilled off under reduced pressure. The residue was purified by silica gel chromatography eluting with ethyl acetate-hexane (1:4) to give 5-(3-bromopropylidene)-5,11-dihydro-7-methoxy [1]benzoxepino[2,3-b]pyridine (5.6 g).

Provenance & Evidence