Premium
Cu 2+ ion crosslinked carboxymethylcellulose/diatomite composite beads as an efficient catalyst for CuAAC reactions
Author(s) -
Zeng Fang,
Zhang Mingjuan,
Li Yiqun
Publication year - 2021
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.5369
Subject(s) - materials science , catalysis , composite number , copper , chemical engineering , x ray photoelectron spectroscopy , nuclear chemistry , yield (engineering) , selectivity , polymer chemistry , composite material , chemistry , organic chemistry , metallurgy , engineering
Cu 2+ ‐crosslinked carboxymethylcellulose/diatomite composite beads (Cu II @CMC/DE) were prepared in simple and efficient way using ionic crosslinking techniques. In Cu II @CMC/DE beads, diatomite serves as a reinforcing filler, and divalent copper cation acts as crosslinking agent. The chemical structure and morphology of as‐fabricated Cu II @CMC/DE beads were well characterized using various techniques such as ICP, FT‐IR, XRD, SEM, EDS, elemental mapping, TEM, XPS, and TGA. The Cu II @CMC/DE beads exerted superior catalytic performance in CuAAC reactions of benzyl halides, sodium azide, and alkynes to yield regioselected 1,4‐disubstitued‐1,2,3‐triazoles in excellent yields under green conditions. In these resultant catalytic composite beads, Cu 2+ was used not only as a crosslinking agent but also as a metal catalyst for CuAAC reaction. The composite beads can be easily separated by filter and reused at least four times without any significant decrease on its activity and selectivity.