Super Paramagnetic, MCM-41-Supported, Recyclable Copper-Complexed Dendrimer: A Novel Nanostructured Catalyst for Propargylamine Synthesis Under Solvent-Free Conditions

Abstract

A super paramagnetic MCM-41 with dendrites copper complex is prepared and characterized using FT-IR, BET, AAS, TEM, CV, TGA, X-ray and VSM. The catalyst was used in CÀH activation reaction for the synthesis of propargylamines by the reaction of aldehydes, amines and phenylacetylene under solvent-free conditions. Finally the catalyst was separated using an external magnet and reused many times.

Synthesis and characterization of highly efficient and recoverable Cu@MCM-41-(2-hydroxy-3-propoxypropyl) metformin mesoporous catalyst and its uses in Ullmann type reactions

“…1 B. The intense 2θ peak at around 2.4° should be attributed to the (100) plane of the MCM-41 and the very weak peak between 4° and 5° was characteristic of its long-range hexagonal structure 28 , 29 . Comparison of patterns a, b, and c in Fig.…”

The Synthesis of Group 10 and 11 Metal Complexes of 3,6,9‐Trithia‐1‐(2,6)‐pyridinacyclodecaphane and Their Use in A3‐Coupling Reactions

“…1‐(1,3‐Diphenylprop‐2‐yn‐1‐yl)piperidine: 1 H NMR (400 MHz, CDCl 3 ): δ = 1.41–1.50 (m, 2 H), 1.55–1.66 (m, 4 H), 2.58 (t, J = 5.1 Hz, 4 H), 4.81 (s, 1 H), 7.29–7.40 (m, 6 H), 7.52–7.56 (m, 2 H), 7.65 (d, J = 7.3 Hz, 2 H) ppm. 13 C NMR (125 MHz, CDCl 3 ): δ = 26.2, 50.6, 61.7, 85.4, 88.2, 123.1, 128.2, 128.3, 128.9, 129.8, 131.8, 133.2, 137.4 ppm.…”

“…A mixture of the complex 3a,3b,4a,4b or 4c, aldehyde, amine and phenylacetylene (for precise ratios of reagents see [1-(2,5-Dimethoxyphenyl)-3-phenylprop-2-yn-1-yl 1, 55.1, 55.7, 56.7, 67.1, 86.5, 86.6, 112.8, 113.4, 116.3, 123.1, 127.4, 128.1, 128.2, 131.7, 151.6, 153.3 4, 26.1, 50.8, 55.4, 55.7, 57.0, 86.1, 87.6, 112.9, 113.2, 116.4, 123.4, 127.9, 128.1, 131.7, 151.7, 153.3 4, 50.5, 51.8, 55.7, 58.5, 85.3, 87.8, 112.2, 113.3, 115.7, 123.4, 127.9, 128.2, 128.9, 131.7, 150.9, 153.4 [20] 2, 50.7, 61.7, 85.4, 88.2, 123.1, 128.2, 128.3, 129.0, 129.8, 131.8, 133.2, 137.4 [20] 8, 61.4, 67.1, 84.4, 88.9, 122.7, 128.3, 128.4, 128.5, 129.9, 131.8, 133.6, 136.5 [20] 4, 50.1, 58.3, 85.9, 122.9, 128.1, 128.2, 128.3, 128.9, 129.5, 129.8, 131.7, 133.2, 138.1, 145…”

A decennary update on applications of metal nanoparticles (MNPs) in the synthesis of nitrogen- and oxygen-containing heterocyclic scaffolds

“…Super-paramagnetic MCM-41 with a dendrite copper complex (FMNC) catalyzed A 3 coupling for the synthesis of propargylamines (45f) from substituted benzaldehydes (21a), alicyclic amines (44), and phenyl acetylene (3d, Scheme 282) was reported by Abdollahi-Alibeik et al 510 FMNC was synthesized via the functionalization of MCM-41 including amination with diethyl amine and formation of the complex using copper acetate. The catalyst was separated by magnetic decantation and recycled for up to three runs with slight loss in its catalytic performance during a prolonged reaction time together with a slight loss in Cu content.…”