反应详情

The compound of Example 15 was by preparing 6-[(4-aminophenyl)ethynyl]imidazo[1,2-b]pyridazin-2-amine as in Example 20, followed by a procedure similar to Example 3 using 2-chloro-1-fluoro-4-isocyanatobenzene as the isocyanate (see also Schemes 1, 2, and 9).