7-ethylenesulfonyloxy-4-methyl-coumarin 、
3,4-bis(4-hydroxyphenyl)furan 以
四氢呋喃 为溶剂,
反应 8.0h,
生成 4-methyl-2-oxo-2H-chromen-7-yl-5,6-bis(4-hydroxyphenyl)-7-oxabicyclo[2.2.1]hept-5-ene-2-sulfonate 、 4-methyl-2-oxo-2H-chromen-7-yl-5,6-bis(4-hydroxyphenyl)-7-oxabicyclo[2.2.1]hept-5-ene-2-sulfonate