Title of article :
Synthesis and Characterization of a Novel Nanosilica Supported Bipyridinium Chloride Nanocomposite and its Application as a Basic Catalyst in the One-pot Preparation of Tetrahydrobenzo[b] pyran, Dihydropyrano[3,2-c]chromene and Dihydropyrano[4,3-b] pyran Derivatives
Author/Authors :
Kiasat ، Ali Reza Chemistry Department - Faculty of Sciences - Shahid Chamran University of Ahvaz , Hamid ، Sheida Chemistry Department - Faculty of Sciences - Shahid Chamran University of Ahvaz , Saghanezhad ، Jafar ACECR-Production Technology Research Institute
Abstract :
A novel rice-husk-silica supported n-propyl bipyridinium chloride (RHPrBPCl) has been prepared. Due to the basicity of RHPrBPCl, it was decided to evaluate its catalytic activity in the one-pot preparation of tetrahydrobenzo[b]pyran, dihydropyrano[3,2-c]chromene and dihydropyrano[4,3-b]pyran derivatives. The catalyst was characterized by FT-IR, SEM and TGA analyses. This methodology offers several advantages including easy work-up procedure, high yields of the products, short reaction times, recyclable catalyst and green reaction medium.
Keywords :
Bipyridine , Dihydropyrano[3 , 2 , c]chromenes , Dihydropyrano[4 , 3 , b]pyrans , Nanosilica supported catalyst , Tetrahydrobenzo[b]pyran
Journal title :
Nanochemistry Research (NCR)
Journal title :
Nanochemistry Research (NCR)
