2-fluoro-4-formyl-6-hydroxybenzoic acid 、
1-(1-methyl-1H-pyrazol-4-yl)-2-(thiophen-2-yl)ethanone 、 ammonium acetate 在
丙二酸环(亚)异丙酯 、
溶剂黄146 作用下,
以3%的产率得到2-fluoro-6-hydroxy-4-(6-(1-methyl-1H-pyrazol-4-yl)-2-oxo-5-(thiophen-2-yl)-1,2,3,4-tetrahydropyridin-4-yl)benzoic acid