(R)-3-amino-1-methylpyrrolidin-2-one hydrochloride 、 6-chloro-8-((4-methoxybenzyl)(methyl-d
3)amino)imidazo[1,2-b]pyridazine-3-carboxylic acid 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 0.5h,
以92%的产率得到(R)-6-chloro-8-((4-methoxybenzyl)(methyl-d3)amino)-N-(1-methyl-2-oxopyrrolidin-3-yl)imidazo[1,2-b]pyridazine-3-carboxamide