Dimethyl Sulfoxide → 2-Bromo-4-(4-chloro-phenyl)-nicotinic acid

Participants

Reaction Conditions

Reaction Steps

50.0 g (0.15 mol) of methyl 2-bromo-4-(4-chlorophenyl)nicotinate was weighed, and 300 ml of dimethylsulfoxide and 60 ml of 30% sodium hydroxide aqueous solution were added thereto and the mixture was stirred at 80° C. for 3 hours. The mixture was then poured into water and was washed with 300 ml of ethyl acetate. Thereafter, the aqueous layer was acidified with 10% HCl aqueous solution to precipitate a crystal, which was then filtrated out. The crystal thus precipitated was washed with water and isopropyl ether, and was dried to obtain 41.0 g of a white crystal of the aimed product.

Provenance & Evidence