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One‐Pot Synthesis of Polyhydroquinoline Derivatives through Organic‐Solid‐Acid‐Catalyzed Hantzsch Condensation Reaction
Author(s) -
Mondal Sujan,
Patra Bidhan Chandra,
Bhaumik Asim
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201601409
Subject(s) - magic angle spinning , catalysis , chemistry , alkylation , oxidizing agent , sorption , one pot synthesis , heterogeneous catalysis , condensation reaction , organic chemistry , nuclear magnetic resonance spectroscopy , adsorption
We report the synthesis of a new porous polymeric network (PPN) using triphenylamine and α,α‐dibromo‐ p ‐xylene by a Friedel–Crafts alkylation promoted by anhydrous FeCl 3 as an oxidizing agent. Sulfonation of PPN led to a sulfonated porous polymeric network (SPPN) having high surface acidity and high BET surface area. We characterized the PPN and SPPN materials thoroughly by using powder XRD, FTIR spectroscopy, 13 C solid‐state magic‐angle spinning NMR, field‐emission SEM, high‐resolution TEM, and N 2 sorption techniques. The sulfonated material SPPN was then employed as a heterogeneous, reusable, and environmentally benign organic solid‐acid catalyst for the one‐pot synthesis of biologically important polyhydroquinoline derivatives under microwave irradiation.