4-ethylisoxazole-3-carboxylic acid 、 2-{2-[(S)-amino(4,4-difluorocyclohexyl)methyl]imidazo[1,2-b]pyridazin-7-yl}-4,4-difluoro-N-(2,2,2-trifluoroethyl)butanamide 在
N,N-二异丙基乙胺 、
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 0.67h,
生成 N-[(S)-(4,4-difluorocyclohexyl){7-[(1S)-3,3-difluoro-1-(2,2,2-trifluoroethylcarbamoyl)propyl]imidazo[1,2-b]pyridazin-2-yl}methyl]-4-ethylisoxazole-3-carboxamide 、 N-[(S)-(4,4-difluorocyclohexyl){7-[(1R)-3,3-difluoro-1-(2,2,2-trifluoroethylcarbamoyl)propyl]imidazo[1,2-b]pyridazin-2-yl}methyl]-4-ethylisoxazole-3-carboxamide