反应详情

A solution of 3-[6-Bromo-8-(2-pyridin-4-yl-imidazol-1-yl)-imidazo[1,2-a]pyrazin-6-yl]-phenylamine (5) (400 mg), 2-isocyanato-1-methoxy-4-trifluoromethyl-benzene (246 mg), in dichloromethane (DCM) (3 ml) and DMF (0.5 ml) is stirred at room temperature for 16 hr. The mixture is concentrated in vacuo, the residue slurried with diethyl ether/methanol (20:1), and filtered to give 1-(2-Methoxy-5-trifluoromethyl-phenyl)-3-{3-[8-(2-pyridin-4-yl-imidazol-1-yl)-imidazo[1,2-a]pyrazin-6-yl]-phenyl}-urea (6) (468 mg) as a white solid.

1. concentrationThe mixture is concentrated in vacuo
2. filtrationfiltered