乙酰氧肟酸 、
{2-[3-(4-fluoro-phenyl)-pyrrolidine-1-carbonyl]-6-furan-3-yl-8-trifluoromethyl-imidazo[1,2-a]pyridin-3-yl}-acetic 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 2.67h,
以52%的产率得到[3-(4-fluoro-phenyl)-pyrrolidin-1-yl]-[6-furan-3-yl-3-(3-methyl-[1,2,4]oxadiazol-5-ylmethyl)-8-trifluoromethyl-imidazo[1,2-a]pyridin-2-yl]-methanone