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Porous triazine polymer: A novel catalyst for the three‐component reaction
Author(s) -
Nouruzi Nasrin,
Dinari Mohammad,
Mokhtari Nazanin,
Gholipour Behnam,
Rostamnia Sadegh,
Khaksar Samad,
Boluki Rana
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5677
Subject(s) - chemistry , catalysis , triazine , nanoporous , polymer , polymer chemistry , 1,3,5 triazine , nanoparticle , coupling reaction , inorganic chemistry , organic chemistry , chemical engineering , engineering
A new porous triazine‐based covalent organic polymer (Triazine‐COP) was prepared through the Schiff‐base condensation of 2,4,6‐tris(4‐formyl phenoxy)‐1,3,5‐triazine and 4,4′‐oxydianiline, under sonication. The synthesized Triazine‐COP with a high surface area was stable in water and other organic solvents. In the next step, Au (III) ions were immobilized on the nitrogen‐rich Triazine‐COP that on the reduction with NaBH 4 produced the heterogeneous catalyst of gold clusters in nanosize (Au‐NCs@Triazine‐COPs). It was applied as an efficient catalyst for the A 3 coupling reaction of alkynes, aldehydes with and amines. Both electron‐withdrawing/releasing groups produced the corresponding propargylamines with high yields. The high activity of the Au‐NCs@Triazine‐COPs in this reaction was because of the nanoporous structure of the support that enables the high dispersion and an unhindered open environment for the NCs. The catalyst was reused up to 7 times without significant loss in activity.