Potassium Carbonate → 1-Bromo-3-(2,2-diethoxyethoxy)benzene

Participants

Reaction Conditions

Reaction Steps

A mixture of potassium carbonate (1.5 g, 10.9 mmol), 3-bromophenol (1.73 g, 10.0 mmol) and bromoacetaldehyde diethyl acetal (1.5 ml, 9.67 mmol) in dimethylsulphoxide (10 ml) was heated at 160° C. for 1½ hours. The cooled reaction was partitioned between water (50 ml) and ethyl acetate (100 ml), and the phases separated. The aqueous layer was extracted with ethyl acetate (50 ml), the combined organic solutions washed consecutively with 1N sodium hydroxide solution, water (2×), brine and then dried (Na2SO4), filtered and evaporated in vacuo. The residue was purified by medium pressure column chromatography on silica gel using an elution gradient of ether:pentane (0:100 to 5:95) to afford the title compound (2.01 g, 72%).

Provenance & Evidence