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Introduction of a New Magnetic Nanocatalyst as an Organic‐inorganic Hybrid Framework for the Synthesis of Pyrano[2,3‐ d ]pyrimidinone(thione)s and Pyrido[2,3‐ d ]pyrimidines
Author(s) -
KarimiChayjani Reyhaneh,
Daneshvar Nader,
Tajik Hassan,
Shirini Farhad
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802916
Subject(s) - triethoxysilane , reagent , catalysis , cationic polymerization , chemistry , nuclear chemistry , combinatorial chemistry , organic chemistry , materials science
In this work, the preparation of bis‐[(3‐aminopropyl)triethoxysilane]dichloride immobilized on magnetic nano γ ‐Fe 2 O 3 @SiO 2 is reported. This reagent can be obtained via the reaction of two molecules of 3‐aminopropyl)triethoxysilane with 1,4‐dichlorobutane followed by immobilization of the resulted di‐cationic compound on silica coated nano γ ‐Fe 2 O 3 . After characterization using FT‐IR, XRD, FE‐SEM and TGA techniques, the prepared reagent was used as a highly efficient catalyst for the promotion of the synthesis of pyrano[2,3‐ d ]pyrimidinones (thiones) and pyrido[2,3‐ d ]pyrimidine derivatives. The rates and especially the yields of the reactions were excellent in comparison to the reported catalyst for these reactions. Also, the recovery and reusability of the catalyst were excellent for both of the reactions using an external magnet.