Oxalyl chloride → Methyl 2-chloro-6-methylpyridine-3-carboxylate

Participants

Reaction Steps

To the solution of 2-chloro-6-methylnicotinic acid (5 g, 29.1 mmol) in CH2Cl2 (40 mL) was added oxalyl dichloride (8.1 g, 63.8 mmol) at 0° C. and the reaction mixture was stirred for 2 h. The mixture was concentrated and 40 mL of methanol was then added at 0° C. and the reaction mixture was stirred at RT for 12 h. The mixture was then concentrated in vacuo and extracted with EtOAc. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo to provide methyl 2-chloro-6-methylnicotinate that is used without further purification as a light yellow solid.

Provenance & Evidence