BF3 Etherate Catalyzed Lactonization Reaction: Synthesis of 4-Aryl-2-pheny1-4, 6-dihydrofuro[3, 4-c]furan-6-ones
NIE Xiaoping,YE Xiulin
Acta Scientiarum Naturalium Universitatis Pekinensis . 2000, (4): 561 -565 .