反应详情

To a solution of 1.0 g of 2-(4-bromo-1H-imidazol-1-yl)-3-chloropyridine in 5 ml of dichloromethane was added dropwise a solution of 0.45 ml of trichloroacetyl chloride in 5 ml of dichloromethane at room temperature. The resulting mixture was stirred at room temperature for 1 day. Thereto 0.57 ml of triethylamine was added, and the resulting mixture was stirred at room temperature for 2 hours. The reaction mixture was concentrated under reduced pressure, and the resulting residue was subjected to silica gel chromatography to obtain 1.0 g of 1-[4-bromo-1-(3-chloro-2-pyridinyl)-1H-imidazol-2-yl]-2,2,2-trichloroethanone of the formula:

1. stirringthe resulting mixture was stirred at room temperature for 2 hours
2. concentrationThe reaction mixture was concentrated under reduced pressure