TY - EJOUR
AU - Rafiee, Fatemeh
AU - Kermani, Sahar
PY - 2023
DA - December
TI - Synthesis of 1,3-diphenyl-2-propyn-1-ol derivatives in water catalyzed by silver ions immobilized on the magnetic cross-linked chitosan
T2 - Iranian Journal of Catalysis
VL - 12
L1 - https://oiccpress.com/iranian-journal-of-catalysis/article/synthesis-of-13-diphenyl-2-propyn-1-ol-derivatives-in-water-catalyzed-by-silver-ions-immobilized-on-the-magnetic-cross-linked-chitosan/
DO - 10.30495/ijc.2022.1964242.1954
N2 - In this work, chitosan biopolymer was cross-linked by starch oxide through the covalent bond formation between amine groups of chitosan and aldehyde functional of oxidized starch. A magnetic bio-support was obtained due to the treatment of the produced hybrid biopolymer with iron oxide nanoparticles. As a result of exposing of silver nitrate salt to magnetic polymer, silver ions (Ag2O) and also Ag metal nanoparticles were deposited on this bio-support. The silver oxide was decorated on the magnetic chitosan biopolymer could catalyzed the cross-coupling reaction of substituted benzaldehydes with phenylacetylene in the presence of PPh3 (20 mol%) in water to achieve 1,3-diphenyl-2-propyn-1-ol derivatives in good yields at proper reaction times. Highlights The magnetic chitosan was modified with starch oxide as a stable biosupport for Ag immobolization. The nanocatalyst was showed high activity in the synthesis of 1,3-diphenyl-2-propyn-1-ol derivatives in water. The nanocatalyst was reused for several cycles without significant difference in activity. 
IS - 4
PB - OICC Press
KW - Silver catalyzed coupling reaction, 3-diphenyl-2-propyn-1-ol., Chitosan supported catalysts, Magnetic Chitosan 
EN -