(1S,2R)-2-fluorocyclopropane-1-amine p-toluenesulfonate 、 9-(4-methoxybenzyl)-6-((2-oxo-2H-[1,2'-bipyridin]-3-yl)amino)-8,9-dihydro-7H-imidazo[1,2-b]pyrrolo[2,3-d]pyridazine-3-carboxylic acid 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
以78 %的产率得到N-((1R,2S)-2-fluorocyclopropyl)-9-(4-methoxybenzyl)-6-((2-oxo-2H-[1,2'-bipyridyl]-3-yl)amino)-8,9-dihydro-7H-imidazolo[1,2-b]pyrrolo[2,3-d]pyridazine-3-carboxamide