Methyl 1-{1-[(3S)-3-amino-3-(3-fluorophenyl)-1-methylpropyl]piperidin-4-yl}-2-methyl-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridine-5-carboxylate 、
3,3-二氟环丁烷羧酸 在
N,N-二异丙基乙胺 、
3-(二乙氧基邻酰氧基)-1,2,3-苯并三嗪-4-酮 作用下,
以
二氯甲烷 为溶剂,
反应 16.0h,
以83%的产率得到Methyl 1-{1-[(3S)-3-{[(3,3-difluorocyclobutyl)carbonyl]amino}-3-(3-fluorophenyl)-1-methylpropyl]piperidin-4-yl}-2-methyl-1,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridine-5-carboxylate