Chloroacetyl chloride → 2-chloro-N-(5-cyano-2-pyridinyl)acetamide

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Reaction Steps

A solution of 2-amino-5-cyano pyridine (2.0 g) in dry dichloromethane (17 mL) under nitrogen at 0° C. was treated with triethylamine (2.6 mL) followed by slow addition of chloroacetyl chloride (1.5 mL). The reaction mixture was allowed to warm up to room temperature. After 2 h, the mixture was partitioned between dichloromethane and water. The phases were separated and the aqueous layer was extracted with dichloromethane (×2). The combined organic layer was washed with brine, dried over sodium sulphate, filtered and concentrated to give the crude product which was purified by silica gel chromatography eluting with 50% EtOAc/cyclohexane. The relevant fractions were combined and evaporated to give the title compound (2.17 g) as a light brown solid.

Provenance & Evidence