Water → 1-Bromo-3-butylbenzene

Participants

Reaction Conditions

Reaction Steps

Under nitrogen stream, to a solution of 1-bromo-3-bromomethylbenzene (25 g) in tetrahydrofuran (200 ml) were sequentially added dropwise n-propylmagnesium bromide (60 ml, 2M solution in tetrahydrofuran) and lithium tetrachlorocuprate (5 ml, 0.1M solution in tetrahydrofuran) at −78° C. Then, this reaction mixture was stirred at 0° C. for 2 hours. Under ice-cooling, to this reaction mixture were sequentially added a saturated aqueous solution of ammonium chloride (100 ml) and water (100 ml), and the mixture was extracted with ethyl acetate (200 ml). The resulting aqueous layer was again extracted with ethyl acetate (100 ml), the combined organic layer was washed with a saturated aqueous solution of sodium chloride (100 ml), and dried over anhydrous sodium sulfate. This organic layer was concentrated under reduced pressure, the resulting residue was purified by silica gel chromatography (eluent: n-hexane/ethyl acetate=1/0 to 100/1) to give the titled compound (8.5 g).

Provenance & Evidence