Trimesic acid-functionalized chitosan: A novel and efficient multifunctional organocatalyst for green synthesis of polyhydroquinolines and acridinediones under mild conditions

Melamine phosphate-modified magnetic chitosan: a novel biocompatible catalyst for the synthesis of biological tetrahydrodipyrazolopyridine and pyrazolopyranopyrimidine derivatives

“…Polysaccharides such as cellulose, chitosan, and lignin rank among the most widely used natural materials for these structures ( Khalilzadeh et al, 2022 ; Rezaei, 2022 ). Notably, chitosan a biological, inexpensive, and readily available macromolecule with active functional groups ( Beiranvand and Dekamin, 2023 ) holds promise in enhancing clinical trials and improving physical attributes such as solubility, stability, corrosion resistance, and catalytic activity through surface modification ( Mohamed et al, 2014 ; Özkan et al, 2022 ). Chitosan surface modification can be achieved by incorporating other active groups through physical loading or covalent grafting ( Simkovich and Wagner, 1962 ; Welton, 1999 ; Negm et al, 2020 ).…”