Polymer-Supported Cu–Nanoparticle as an Efficient and Recyclable Catalyst for Oxidative Homocoupling of Terminal Alkynes

High‐efficiency catalyst for copper nanoparticles attached to porous nitrogen‐doped carbon materials: Applied to the coupling reaction of alkyne groups under mild conditions

“…Simultaneously, there is a satellite peak corresponding to each, and the characteristic peaks at 954.8 and 935.2 eV are attributed to 2p 1/2 and 2p 3/2 of the oxidized Cu 2+ , respectively. [ 1f,2a,6 ] This is the result of oxygen in the air reacting with metal Cu in the catalyst after the catalyst is prepared, resulting in a small amount of elemental Cu being oxidized to CuO. Furthermore, this phenomenon is consistent with the XRD pattern results of Figure 1a.…”

“…Next, the oxidized Cu + is matched with the two substrates that have lost the H protons, then the reduction elimination is implemented with the production of products and the reduction of Cu + to Cu 0 . [ 1a,e,10c ] Ultimately, water is formed by the combination of H protons and oxygen, accompanied by the oxidation of Cu 0 to Cu + to promote the next cycle. [ 3e,6,7e,10c ] In the case of Cu 2+ , it is reduced to Cu + after the reduction elimination process is implemented.…”

“…1,3‐diyne is a kind of conjugated diyne compound with symmetric and asymmetric structure and unique properties, which are widely applied to material chemistry and synthetic chemistry because of its antibacterial, anti‐inflammatory, and anticancer effects. [ 1 ] At the same time, 1,3‐diyne is also an important part of photovoltaic materials, electromagnetic materials, and optical devices. [ 2 ] Because the initial synthesis strategy has some shortcomings, such as low atom utilization, failure to achieve reuse, and complex reaction conditions.…”

Copper based on diaminonaphthalene-coated magnetic nanoparticles as robust catalysts for catalytic oxidation reactions and C–S cross-coupling reactions

“…A plausible mechanism for this transformation is shown in Scheme 4 , on the basis of the literature works. 23 A comparison for the efficiency of the catalytic activity of CoFe 2 O 4 -DAN-Cu( ii ) for the oxidation of sulfides to sulfoxides ( Table 7 , entries 1–7), synthesis of symmetrical sulfides ( Table 7 , entries 8–11), and oxidative coupling of thiols to disulfides ( Table 7 , entries 12–15) with several previously reported methods is presented. Recently, the use of Co@SiO 2 [(EtO) 3 Si–L 3 ]/Mn( iii ) ( Table 7 , entry 1), FeNi 3 /SiO 2 ( Table 7 , entry 3), Mn( iii )-binapthyl Schiff base diamine-SBA-15 ( Table 7 , entry 4), K 6 H 8 [(SeV 10 O 28 (SeO 3 ) 3 ) 2 (M(H 2 O) 4 )]·24H 2 O ( Table 7 , entry 5), VO-TAPT-2,3-DHTA COF ( Table 7 , entry 6), CuFe 2 O 4 ( Table 7 , entry 12), Pd-isatin Schiff base@KIT-6 ( Table 7 , entry 13), and TiO(O 2 CCF 3 )/NaI/thiol ( Table 7 , entry 14) was reported for oxidation reactions.…”

Three-Dimensional Graphene-Decorated Copper-Phosphide (Cu3P@3DG) Heterostructure as an Effective Electrode for a Supercapacitor

“…In recent times, the synthesis of materials having semiconducting, metalloid, and energy storage properties has emerged at the forefront of research activities (Augustyn et al, 2014;López-Ortega et al, 2015;Sivula and Van De Krol, 2016). The transition metal phosphides are a fascinating class of materials because of their wide range of properties depending on their size and shape (Barry et al, 2008;Shao et al, 2017;Aziz and Islam, 2018). Metal phosphides have been tested and found to be active catalysts with their potential applications in electro-catalysis and photo-catalysis.…”