对甲苯磺酸 、 3-[1-(4-Fluorophenyl)-1-hydroxy-1-(4-methanesulphonylphenyl)-methyl]dihydrofuran-2-one 在
crystals 作用下,
以
甲苯 为溶剂,
反应 10.0h,
以to give 2.9 g of (E)-3-[1-(4-fluorophenyl)-1-(4-methanesulphonylphenyl)methylidene]dihydrofuran-2-one (second product eluted) in the form of crystals melting at 187-9° C的产率得到(E)-3-[1-(4-fluorophenyl)-1-(4-methanesulfonylphenyl)methylidene]dihydrofuran-2-one