Silica-Bonded N-Propyl Sulfamic Acid-Catalyzed Synthesis of 8-Aryl-7,8-dihydro-[1,3]dioxolo[4,5- g]chromen-6-ones
LI Wei-Lin, LUO Qiu-Yan, YAN Fu-Lin
Chin. J. Org. Chem. . 2011, (08): 1282 -1285 .