Synthesis of a reusable polymer anchored cobalt(II) complex for the aerobic oxidation of alkyl aromatics and unsaturated organic compounds

Synthesis, Electronic, Magnetic and Structural Characterization of New Trinuclear Mixed‐Valence CoIII‐CoII‐CoIII Complex.

“…The diffuse reflectance was recorded (Supplementary Information, Figure S4). It was observed the ligand, charge‐transfer and d‐d transitions this information confirm that in solution and solid is the same …”

Catalytic Oxidation Processes for the Upgrading of Terpenes: State-of-the-Art and Future Trends

“…Moreover, most of the oxidation processes still suffer from various drawbacks, such as the use of too sophisticated catalysts, toxic organic solvents, and high amounts Although many works have been carried out for the allylic oxidation of olefinic terpenes, most processes still suffer from some drawbacks such as moderate conversions and/or selectivities, sophisticated catalytic systems, toxic organic solvent as well as huge amounts of oxidant, long reaction times and difficult catalyst's recycling. It is noteworthy to underline that two examples for the allylic oxidation of α-pinene 1 were carried out in water as a green reaction media, with polymer-supported nickel catalyst [41] or with aqueous suspensions of ruthenium nanoparticles [90].…”

“…In 2014, to facilitate the catalyst's recovery, a chloromethylated polystyrene-supported cobalt(II) complex, prepared through a two-step process, was used for the aerobic epoxidation of αand β-pinenes 1 and 12 ( Figure 7) [41]. Although the reaction occurred quite easily to form the epoxide products, lower selectivities were observed compared to other alkenes derivatives.…”

“…Aerobic oxidation of pinene isomers using a polymer-anchored Co(II) catalyst (adapted from reference[41]). …”

Catalytic activity and facile recovery of a cyclometalated N‐heterocyclic carbene palladium(II) complex immobilized by non‐covalent interactions on reduced graphene oxide

“…Attempts to prepare immobilized transition metal catalysts follow three major methods: (1) covalent bond formation or ion pairing between support and complex, (2) non‐bonding interactions including hydrogen bridging, halogen bridges, π‐stacking, sigma C–H– π‐stacking or London forces (van der Waals interactions) with the support and (3) encapsulation. Various supports including polymers, Fe 3 O 4 nanoparticles, silicates, zeolites and carbon materials such as graphene oxide (GO) and reduced graphene oxide (rGO) have been used in the immobilization of metal complexes. Pd(II) complexes of N‐heterocyclic carbenes (NHCs) have been reported as immobilized homogeneous catalysts for C&bond;C coupling reactions on various suitable supports .…”