Tin tetrachloride → 5-(2-chloro-pyridine-3-carbonyl)-1H-pyrrole-2-carboxylic acid methylamide

Participants

Reaction Steps

To a mixture of 1H-pyrrole-2-carboxylic acid methylamide (430 mg, 3.5 mmol) and 2-chloronicotinoyl chloride (0.6 g, 3.4 mmol) in benzene (15 mL) at 0° C. was added a dropwise solution of tin (IV) chloride (1.6 g) in benzene (5 mL). The mixture was allowed to warm up slowly to room temperature and stirred for 4 hours. The reaction was diluted with ethyl acetate, washed with water, brine, dried and concentrated to give 320 mg (35%) of 5-(2-chloro-pyridine-3-carbonyl)-1H-pyrrole-2-carboxylic acid methylamide.

Provenance & Evidence