N-chlorosuccinamide → N-Hydroxypicolinimidoyl chloride

Participants

Reaction Steps

To a solution of (E)-picolinaldehyde oxime (10.0 g, 82.0 mmol) in DMF (30 mL) at room temperature was slowly added over 30 minutes N-chlorosuccinamide (10.9 g, 82.0 mmol). An exotherm was noted during the addition. The reaction mixture was stirred overnight at room temperature, diluted with diethyl ether (300 mL), washed with water, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was triturated with dichloromethane, and the resulting solid was collected by vacuum filtration and dried to give (Z)—N-hydroxypicolinimidoyl chloride (12.8 g, 51.1 mmol, 62% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 7.49 (ddd, 1H), 7.83-7.95 (m, 2H), 8.66 (ddd, J=4.73, 1.43, 1.32 Hz, 1H), and 12.64 (s, 1H).

Provenance & Evidence