(2-(cyclopentyloxy)phenyl)methanamine 、 5-(2-acetamidoimidazo[1,2-b]pyridazin-6-yl)nicotinic acid, lithium salt 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以3.7%的产率得到N-{[2-(cyclopentyloxy)phenyl]methyl}-5-{2-acetamidoimidazo[1,2-b]pyridazin-6-yl}pyridine-3-carboxamide