105680-00-0Relevant articles and documents
Copper nanoparticles on charcoal: An effective nanocatalyst for the synthesis of enol carbamates and amides via an oxidative coupling route
Saberi, Dariush,Mansoori, Sakineh,Ghaderi, Esmali,Niknam, Khodabakhsh
, p. 95 - 99 (2016)
The catalytic activity of copper nanoparticles on charcoal (Cu/C) was investigated as an environmentally friendly heterogeneous catalyst for the synthesis of enol carbamates and amides via the oxidative coupling of N,N-dialkyl formamides with 1,3-dicarbonyl compounds and aromatic aldehydes with amine hydrochloride salts, respectively. Various enol carbamates and amides were synthesized in moderate to good yields using this method. Moreover, the catalyst could be recovered and subsequently reused in further reactions.
Oxidative amidation by Cu(ii)-guanidine acetic acid immobilized on magnetized sawdust with eggshell as a natural base
Arefi, Marzban,Darvishi, Atefeh,Heydari, Akbar,Kazemi Miraki, Maryam
, p. 11777 - 11785 (2020)
Copper(ii)-guanidine acetic acid complex was immobilized on the surface of magnetized raw waste sawdust (SD) as an abundant natural biopolymer and employed as an efficient and recoverable catalyst in oxidative amidation reaction, while waste eggshell (ES) powder was used as a low-cost solid base. The magnetic raw catalyst was fully characterized using FTIR, XRD, SEM, EDX, TGA, and VSM. A variety of amide derivatives were successfully synthesized in moderate to good yields using benzyl alcohol and amine salts. The application of sawdust and eggshell as two natural and abundant waste materials is the main advantage of this research. Moreover, these low-cost catalysts were recovered at least five times and utilized in reaction systems with a minimal decrease in activity.
Copper-amino group complexes supported on silica-coated magnetite nanoparticles: Efficient catalyst for oxidative amidation of methyl arenes
Karimi, Meghdad,Ghandi, Leila,Saberi, Dariush,Heydari, Akbar
supporting information, p. 3900 - 3908 (2018/03/06)
Magnetite nanoparticles coated with mesoporous silica, Fe3O4@SiO2, were prepared. Surface functionalization of this core-shell nanocomposite with (3-aminopropyl)trimethoxysilane (APTMS) followed by its reaction with Cu(OAc)2 was used to develop a new heterogeneous copper complex (Fe3O4@SiO2-APTMS-Cu). The structure and composition of the synthesized nanocatalyst were characterized by FTIR, SEM, VSM, TEM, XRD, and ICP analyses. The catalytic activity of the synthesized catalyst was probed in the oxidative amidation reaction of methyl arenes with amine hydrochloride salts. Various primary, secondary, and tertiary amides were prepared by this method. The magnetic properties of this catalyst lead to easy separation as well as providing significant catalyst recyclability. The catalyst is reusable 6 times without significant decrease in its catalytic activity.
