Polythiophene‐functionalized magnetic carbon nanotube-supported copper(I) complex: a novel and retrievable heterogeneous catalyst for the “Phosphine- and Palladium-Free” Suzuki–Miyaura cross-coupling reaction

Molecular Organosulphur, Organoselenium and Organotellurium Complexes as Homogeneous Transition Metal Catalytic Systems for Suzuki Coupling

“…However, due its expensive nature, scientists have started exploring catalytic frameworks based on other earth abundant metals such as nickel and copper. [16,45,64] Though the efficiency of the Ni based catalytic systems is lower in comparison to the palladium-based catalysts (in terms of either catalyst loading, yield of the product or substrate scope), they are very much attractive due to their cost. Such lower efficiencies may be due to inadequate donation of electron density from ligand molecule to the metal centre as nickel is a hard acid and chalcogens are soft donors.…”

“…[63] Ligands such as L57-L59 are commercially available (Figure 8). [64][65][66] The synthesis of L61 and L62 is carried out by the reaction of 9anthracene carboxaldehyde/1-pyrenecarboxaldehyde with 2aminothiophenol in ethanol for 2 hours at room temperature. [67]…”

“…Such systems include preformed complexes of metals with a variety of ligands [10,11,14,15,17] in molecular form (i. e., homogeneous catalysts). All these types of systems have also been designed using organosulphur, organoselenium and organotellurium ligands [10,11,18–86] during last decade. The chalcogen donor containing systems are very popular due to their high efficiency and stability.…”

Fe3O4‐SAHPG‐Pd0 nanoparticles: A ligand‐free and low Pd loading quasiheterogeneous catalyst active for mild Suzuki–Miyaura coupling and CH activation of pyrimidine cores

“…The ICP-OES analysis of the filtrate showed that there is no leaching of the palladium after 10 min. In the course of our investigations devoted to the synthesis of new heterocyclic compounds with interesting pharmacological properties, we were interested in the examination of the ability of the 1 MOP-Pd I/Br/Cl H 2 O: EtOH K 3 PO 4 80 3 97/82/-Wu et al [48] 2 CNT-Fe 3 O 4 -PTh-Cu (I) I/Br/Cl H 2 O: EtOH K 2 CO 3 80 1/1.1/4 90/85/55 Akbarzadeh et al [49] 3 MP-TPy/Pd I/Br/Cl H 2 O: EtOH K 2 CO 3 80 2/4/10 98/95/92 Targhan et al [50] 4 Pd@TMC-Bpy COF I/Br/Cl Ethyl lactate K 2 CO 3 90 −/1.5/− −/95/− Han et al [51] 5 GO/NiTAPP I/Br/Cl Dioxane K 3 PO 4 80 1/1/2.5 95/92/60 Keyhaniyan et al [52] 6 Pdnp-2 I/Br/Cl DMF K 2 CO 3 110 4/−/− 94/−/− Dutta and Sarkar [53] 7 Pd-γ-Fe 2 O 3 I/Br/Cl H 2 O NaOH 80 −/0.5/− −/95/− Paul et al [54] 8 rings reported in the literature, for instance, (a) ring closure of 2,3-functionalized indoles with CN moieties such as formamide or cyanamide [56] ; (b) reaction of benzylidenindolenine borate derivatives with amidines, thiourea, and guanidines [57] ; (c) azidouraciles cyclization [58] ; and (d) the reaction of glycine ethyl ester with 2,4,6-trichloropyrimidine. The downsides of these methods are low to medium yielding rates, volatile solvent usage, and the need of additional steps to get the desired products.…”

Easy conversion of nitrogen‐rich silk cocoon biomass to magnetic nitrogen‐doped carbon nanomaterial for supporting of Palladium and its application

“…[38] This paper is a continuation of previous researches on the synthesis and application of new green separable heterogeneous catalysts. [39][40][41][42][43][44] This report shows our efforts to make a novel palladium catalyst using both nitrogendoped carbon materials prepared by hydrothermal carbonization process and as-prepared magnetic Fe 3 O 4 as a support. This combination offers benefits of simple separation, great reusability, and perfect ability to load a considerable amount of palladium.…”