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Sustainable design and novel synthesis of highly recyclable magnetic carbon containing aromatic sulfonic acid: Fe 3 O 4 @C/Ph—SO 3 H as green solid acid promoted regioselective synthesis of tetrazoloquinazolines
Author(s) -
Hassankhani Asadollah,
Gholipour Behnam,
Rostamnia Sadegh,
Zarenezhad Elham,
Nouruzi Nasrin,
Kavetskyy Taras,
Khalilov Rovshan,
Shokouhimehr Mohammadreza
Publication year - 2021
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.6346
Subject(s) - chemistry , catalysis , sulfonic acid , nuclear chemistry , yield (engineering) , green chemistry , regioselectivity , carbon fibers , inorganic chemistry , polymer chemistry , organic chemistry , reaction mechanism , composite number , metallurgy , composite material , materials science
A green and stable magnetic Fe 3 O 4 core encapsulated in porous carbon shell was prepared. Then, the surface of as‐synthesized Fe 3 O 4 @meso‐C immobilized with activated 4‐aminobenzenesulfonic acid to achieve Fe 3 O 4 @C/Ph—SO 3 H. Structural, physico‐chemical, and magnetic properties of synthesized Fe 3 O 4 @C/Ph—SO 3 H catalyst using various analyses such as FT‐IR spectroscopy, TGA, XRD, SEM, TEM. EDX, and VSM were investigated. Fe 3 O 4 @C/Ph—SO 3 H was used as a stable and recoverable acid catalyst for regioselective three‐component synthesis of tetrazoloquinazolines under mild conditions. This catalyst offers a green protocol of one pot due to having active SO 3 H groups, reacting in mild conditions with high yield and ability to recover and reuse without significant loss in activity.