Benzoyl Peroxide → 5-(Bromomethyl)-2-[(4-nitrophenyl)sulfanyl]pyridine-3-carbonitrile

Participants

Reaction Steps

A mixture of 60.00 g (0.221 mol) of 3-cyano-2-(4-nitrophenylthio)-5-methylpyridine, 39.37 g (0.221 mol) of N-bromosuccinimide, 3.0 g of benzoyl peroxide and 60 mL of benzene was refluxed for 16 hours while being irradiated with a 275-W sunlamp. The solvent was removed under reduced pressure and the residue was shaken with a mixture of 1 L of water and 1 L of methylene chloride. The organic layer was separated, washed with 1 L of water, dried over anhydrous magnesium sulfate, and filtered. Removal of the solvent by evaporation under reduced pressure yielded 3-cyano-2-(4-nitrophenylthio)-5-bromomethylpyridine which can be used in the following step without further purification.

Provenance & Evidence