Volume & Issue: Volume 3, Issue 2, Spring 2013, Pages 57-121 
6. [BMIm]BF4-LiCl: An effective catalytic system for the synthesis of pyrano[3,2-c]chromene and pyrano[4,3-b]pyrone derivatives

Pages 91-97

Esmayeel Abbaspour-Gilandeh; Seyyedeh Cobra Azimi; Kurosh Rad-Moghadam; Aidin Mohammadi-Barkchai