فهرست نشریات علمی دسترسی آزاد ایران

Silica supported boron trifluoride nanoparticles(BF3-SiO2 NPs) as a mild solid acid catalyst has been used for an improved and rapid one-pot synthesis of benzo[a]xanthene-11-onederivatives using EtOH as a reaction medium. This Michael addition of various aromatic aldehydes with 2-naphtholand dimedone is very simple and the products are isolated with a .......