7-Hydroxy-2-oxo-2H-chromene-3-carboxylic acid (1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-amide 、
乙酸酐 在
sodium acetate 作用下,
以
溶剂黄146 为溶剂,
以75%的产率得到Acetic acid 3-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-ylcarbamoyl)-2-oxo-2H-chromen-7-yl ester