Sharif University of Technology Scientia Iranica 1026-3098 21 3 2014 06 01 Silica supported boron trifluoride nanoparticles(BF3-SiO2 NPs): An efficient and reusable catalyst for one-pot synthesis of benzo[a]xanthene-11-onederivatives Silica supported boron trifluoride nanoparticles(BF3-SiO2 NPs): An efficient and reusable catalyst for one-pot synthesis of benzo[a]xanthene-11-onederivatives 708 714 3508 EN B. Sadeghi Department of Chemistry, Yazd Branch, Islamic Azad University, P.O.Box 89195-155, Yazd, Iran Journal Article 2014 01 20 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 ....... https://scientiairanica.sharif.edu/article_3508_b4d3cb346d1c59a7914967bb431fe774.pdf