TY - JOUR ID - 17610 TI - 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 JO - Nanochemistry Research JA - NCR LA - en SN - 2538-4279 AU - Kiasat, Ali Reza AU - Hamid, Sheida AU - Saghanezhad, Seyyed Jafar AD - Chemistry Department, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran AD - ACECR-Production Technology Research Institute, Ahvaz, Iran Y1 - 2016 PY - 2016 VL - 1 IS - 2 SP - 157 EP - 165 KW - Bipyridine KW - Dihydropyrano[3,2-c]chromenes KW - Dihydropyrano[4,3-b]pyrans KW - Nanosilica supported catalyst KW - Tetrahydrobenzo[b]pyran DO - 10.7508/ncr.2016.02.003 N2 - 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. UR - http://www.nanochemres.org/article_17610.html L1 - http://www.nanochemres.org/article_17610_852bd3c0cda89da168fad8db9edf2a97.pdf ER -