反应详情

To a solution of 6-chloroimidazo[1,2-b]pyridazine-2-amine (561 g, 3.3 mmol) in dimethylacetamide (11 ml) was added 2,2,2-trichloroethyl chloroformate (0.506 ml, 3.66 mmol) with ice-cooling, and the mixture was stirred at room temperature for 1 hour. Water was poured into the reaction solution, and a solid was separated by filtration, which was washed with water to give 724 mg (63.3%) of the desired product as a solid.

1. temperaturecooling
2. customa solid was separated by filtration, which
3. washwas washed with water