4-Methoxy-2-[1-(2-methoxy-phenylamino)-meth-(Z)-ylidene]-3-oxo-butyric acid methyl ester 以
petroleum ether 、
二苯醚 为溶剂,
反应 0.75h,
以to afford 3-methoxyacetyl-8-methoxy-4(1H)-quinolone (40 g, 82.5%) as light brown crystals的产率得到3-methoxyacetyl-8-methoxy-4(1H)quinolone