Surface modification of chitosan with Ni(II) Schiff base complex: A new heterogeneous catalyst for the synthesis of xanthones.
Biopolymer
Chitosan
Heterogeneous catalyst
Schiff Base
Xanthone
Journal
International journal of biological macromolecules
ISSN: 1879-0003
Titre abrégé: Int J Biol Macromol
Pays: Netherlands
ID NLM: 7909578
Informations de publication
Date de publication:
01 Dec 2023
01 Dec 2023
Historique:
received:
21
07
2023
revised:
16
08
2023
accepted:
22
08
2023
medline:
15
11
2023
pubmed:
29
8
2023
entrez:
28
8
2023
Statut:
ppublish
Résumé
A new biocomposite of chitosan, chitosan-supported di(pyridine-2-yl)methanone-Ni(II) complex, CS-DPM-Ni, is synthesized for the first time. The biocomposite is thoroughly characterized by FTIR, PXRD, XPS, FESEM, EDX, TGA, ICP-OES, and elemental analysis. The synthesized composite is successfully used as a heterogeneous catalyst in the synthesis of a library of xanthone derivatives by the intermolecular catalytical coupling of 2-substituted benzaldehydes and phenols. The catalyst could be retrieved from the reaction mixture by simple filtration and reused for up to four catalytic cycles. All products were isolated in good to high yields (65-90 %) with good turnover numbers (TONs), and fully characterized by
Identifiants
pubmed: 37640183
pii: S0141-8130(23)03393-7
doi: 10.1016/j.ijbiomac.2023.126497
pii:
doi:
Substances chimiques
Chitosan
9012-76-4
Schiff Bases
0
Xanthones
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
126497Informations de copyright
Copyright © 2023 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors have no conflict to declare.