Synthesis of Di-γ-pyrano[2,3-a;2',3'-f]naphthalene Derivatives Catalyzed by KF/Al2O3
ZHOU Jie-Xing,b, WANG Xiang-Shan*,a,c, ZENG Zhao-Sena
ZHANG Mei-Meia, SHI Da-Qing,c, TU Shu-Jiang,c
Chin. J. Org. Chem. . 2007, (06): 786 -789 .