Bromine → 2-Bromo-1,3-diphenylbutan-1-one

Participants

Reaction Steps

Bromine (0.02 mol) was added dropwise to a stirred solution of 2-(α-methylbenzyl)acetophenone (0.02 mol) in dry diethyl ether (20 ml) at 5° over one hour. The ether was removed in vacuo and the residue redissolved in ether (100 ml), washed with saturated sodium bicarbonate solution (2 × 100 ml) and then water (4 × 100 ml), and dried over anhydrous sodium sulphate. Removal of the solvent gave a solid which on recrystallisation from petroleum ether (40°-60°) gave 2-bromo-3-phenylbutyrophenone, m.p. 69°-71°.

Provenance & Evidence