反应详情

Oxalyl chloride (2M solution, 20 mL) (Aldrich, Milwaukee, Wis.) was added to a mixture of 2,6-dichloronicotinic acid (6.2 g) and N,N-dimethylformamide (DMF) (0.5 mL) in DCM (100 mL) at room temperature. After stirring at room temperature for 2 hours, the reaction was concentrated to give 2,6-dichloro-nicotinoyl chloride (used directly in the next step).

1. concentrationthe reaction was concentrated