Aerobic oxidative cleavage and esterification of C C bonds catalyzed by iron-based nanocatalyst

Heterogeneous Iron-Catalyzed Aerobic Oxidative Cleavage of C–C Bonds in Alcohols to Esters

“…The X-ray diffraction (XRD) spectrum revealed the composition of the catalyst (Figure S1). The distinct broad peaks at 25 and 43° indicate the generation of graphitic carbon after the pyrolysis at 900 °C. ,, Diffraction peaks at 44.7 and/or 44.9° are assigned to Fe and/or Fe 3 C. ,, …”

“…The distinct broad peaks at 25 and 43°indicate the generation of graphitic carbon after the pyrolysis at 900 °C. 39,40,49 Diffraction peaks at 44.7 and/or 44.9°are assigned to Fe and/or Fe 3 C. 41,44,49 To further study the structure of the Fe-NC-900 catalyst, the characterization was conducted by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray (EDX) mapping (Figure 2). The SEM image under UED mode showed the honeycomb mesoporous structure of the Fe-NC-900 catalyst (Figure 2a).…”

“…In recent years, metal–N–C materials have emerged as promising catalysts for various organic transformations. − In this regard, we have demonstrated that carbon-supported cobalt–nitrogen materials constitute highly active catalysts for the cross-coupling of alcohols with amines to imines, the selective oxidation of alcohols to esters or nitriles, , and the oxidative cleavage of C–C bonds in alcohols to esters and that carbon-supported iron–nitrogen materials constitute catalysts for the oxidative cleavage of CC bonds in olefins to esters . On the basis of our recent investigations and our passionate interest in carbon-supported metal–nitrogen catalyst systems, we further explore the synthesis and application of novel carbon-supported iron–nitrogen catalyst systems for selective organic transformations.…”

A sustainable iron-catalyzed aerobic oxidative C–C and C–O bond cleavage of a lignin model to phenol and methyl benzoate

“…Also, the peaks at 724.6 eV and 728.8 eV of Fe 2p 1/2 are closely related to Fe 2+ and Fe 3+ of the iron catalyst. 34 In the XPS data of the N element, the peaks at 398.1 eV, 398.8 eV, 400.9 eV, 403.4 eV and 406.7 eV can be assigned to pyridine N, Fe-N x , pyrrole N, graphite N and oxidized N. In addition, the peaks at 284.8 eV, 285.9 eV, 286.5 eV and 289.0 eV indicate the presence of CC, C-N, C-O and CO structures on the catalyst surface. 35 Then, to further explore the reaction mechanism of the oxidative cleavage process, some control experiments were carried out and the results are shown in Table 4.…”

Synthesis and styrene copolymerization of novel ring-substituted isobutyl phenylcyanoacrylates

“…4-Acetoxy ring-substituted phenylcyanoacrylate was involved in synthesis of tetrahydrobenzo [b]pyran in water catalyzed by heterogeneous amine grafted on silica [11]; in Knoevenagel reactions with nano-silica PAMAM dendrimer as catalyst [12], and with amine supported on silica gel [13]. 1-Acetate-4-ethenylphenol is reported in silver-catalyzed cyclopropanation of alkenes with alkynyl N-nosylhydrazones leading to alkynyl cyclopropanes [14]; in natural-productdirected catalytic stereoselective synthesis of functionalized fused borane cluster-oxazoles [15], in aerobic oxidative cleavage and esterification of C=C bonds catalyzed by iron-based nanocatalyst [16]; in palladium-catalyzed radical tandem dearomatization of indoles with unactivated alkenes [17]; in metal-free three-component cyanoalkylation of quinoxalin-2(1H)-ones with vinylarenes and azobis(alkylcarbonitrile)s [18]. 3-Iodo-4-methoxystyrene is reported in manipulation of intraparticle charge delocalization by selective complexation of transition-metal ions with histidine moieties [19].…”