5-iodo-2,2-dimethyl-10-methyl-2H,8H-pyrano[2,3f]chromen-8-one 、
N-(4-硼苯)琥珀酰胺酸 在
(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride 、 potassium fluoride 作用下,
以
1,4-二氧六环 为溶剂,
以63.3%的产率得到4-(4-(2,2-dimethyl-10-methyl-2H,8H-pyrano[2,3-f]chromen-8-one-5-yl)phenylamino)-4-oxobutanoic acid