反应详情

A solution of 2-chloronicotinoyl chloride (493 mg, 2.8 mmol) in benzene (1 mL) was added to a mixture of 1H-pyrrole-3-carboxylic acid ethyl ester (390 mg, 2.8 mmol) in benzene (3 mL), followed by a dropwise addition of tin (IV) chloride (0.5 mL). The mixture was stirred at room temperature under nitrogen for overnight. The reaction was treated with 2N HCl and extracted with ethyl acetate. The combined ethyl acetate was washed, dried and concentrated to give 390 mg (50%) of 5-(2-chloro-pyridine-3-carbonyl)-1H-pyrrole-3-carboxylic acid ethyl ester as a white solid.

1. extractionextracted with ethyl acetate
2. washThe combined ethyl acetate was washed
3. customdried
4. concentrationconcentrated