Copper Nanoparticles Immobilized on Nanocellulose: A Novel and Efficient Heterogeneous Catalyst for Controlled and Selective Oxidation of Sulfides and Alcohols

Dutta, Apurba; Chetia, Mitali; Ali, Abdul Aziz; Bordoloi, Ankur; Gehlot, Praveen Singh; Kumar, Arvind; Sarma, Diganta

doi:10.1007/s10562-018-2615-x

Cited by 33 publications

(17 citation statements)

References 41 publications

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“…The catalytic activity of this catalyst in comparison with other reported heterogeneous catalysts [57][58][59][60][61] is listed in Table 8. The results show that in the case of MIL-101(Cr)guanidine-Fe, the reaction yield is increased at optimal in environmentally-friendly reaction conditions.…”

Section: Catalytic Activity Of Mil-101(cr)-guanidine-fementioning

confidence: 99%

Iron-Decorated, Guanidine Functionalized Metal-Organic Framework as a Non-heme Iron-Based Enzyme Mimic System for Catalytic Oxidation of Organic Substrates

et al. 2019

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A novel porous functionalized metal-organic framework (MOF) as a non-heme iron-based enzyme mimic system was achieved via two-step post-synthetic modification of the MIL-101(Cr)-NH 2 , and characterized by FT-IR, PXRD, TGA, SEM, EDS, CHN, BET surface area, and ICP-OES analyses. This new modified MOF (MIL-101(Cr)-guanidine-Fe) has been demonstrated to be a highly efficient, active, and reusable catalyst for oxidation of various organic substrates, including alcohols, alkenes and alkyl arenes at room temperature using H 2 O 2 as an oxidant.

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Section: Catalytic Activity Of Mil-101(cr)-guanidine-fementioning

confidence: 99%

Iron-Decorated, Guanidine Functionalized Metal-Organic Framework as a Non-heme Iron-Based Enzyme Mimic System for Catalytic Oxidation of Organic Substrates

et al. 2019

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“…Coupling constants, J, were reported in Hertz unit (Hz). 13 C NMR spectra were fully decoupled by broad band proton decoupling. High-resolution mass spectra (HRMS) were recorded on an Agilent Mass spectrometer using ESI-TOF or CI/EI.…”

Section: General Informationmentioning

confidence: 99%

“…The crude product was purified by column chromatography on silica gel (EtOAc/hexane = 1/1) to afford 2i as a colorless liquid (706 mg, 84% yield). 13 To a solution of 9H-thioxanthen-9-one (0.424 g, 2.0 mmol) in dioxane (10.0 mL) was added 30% H2O2 aqueous solution (0.34 mL, 4.0 mmol) and TMSCl (0.25 mL, 2.0 mmol) at room temperature. The mixture was then stirred at room temperature for 20 min.…”

Section: S5mentioning

confidence: 99%

Para-Selective Borylation of Monosubstituted Arenes Using a Transient Mediator

Wu¹,

Chen²,

Wu³

et al. 2019

Preprint

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Herein, we conceptualized a transient mediator approach that has the capability of para-selective C–H functionalization of monosubstituted aromatics. This approach is enabled by in situ generation of a versatile sulfonium salt via highly electrophilic phenoxathiine or thianthrene radical cation intermediate which can be readily generated from its sulfoxide with trifluoromethanesulfonic anhydride. Preliminary mechanistic study unveiled that the remarkable para selectivity is related to the incredible electrophilicity and steric hindrance of phenoxathiine or thianthrene radical cation. The versatility of this approach was demonstrated via para-borylation of various monosubstituted simple aromatics combining the sulfonium salt formation with further photocatalyzed transformation.

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“…However, these homogeneous copper catalysts are difficult to separate and recover from the reaction system. Heterogeneous copper catalysts have been used to overcome these issues and some heterogeneous copper catalysts have been reported, such as MCM‐41‐bpy‐CuI, CuTSPc@3D‐(N)GFs, PS/PANI@Cu(OSO 2 CF 3 ) 2 , Cu/MOF, PVA‐stabilized copper oxide nanoparticles, copper‐based coordination polymers, copper nanoparticles, and Cu/graphene . However, some catalytic systems still suffer from instability, the need for harsh reaction conditions, or low utilization of catalytically active metal.…”

Section: Introductionmentioning

confidence: 99%

Copper‐doped sulfonic acid‐functionalized MIL‐101(Cr) metal–organic framework for efficient aerobic oxidation reactions

Zhou

Zhao

et al. 2020

Applied Organom Chemis

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A series of Cr‐based metal–organic framework MIL‐101‐SO3H bearing sulfonic acid functional groups were utilized for the immobilization of catalytically active copper species via a post‐synthetic metalation method. The novel materials were fully characterized by scanning electron microscopy, X‐ray diffraction, energy dispersive X‐ray spectroscopy (EDX), X‐ray photoelectron spectroscopy (XPS), the Brunauer–Emmett–Teller method, and thermogravimetric analysis. XPS and the EDX element map both suggested that Cu2+ is coordinately bonded to the MIL‐101‐SO3H, which forms the MIL‐101‐SO3@Cu structure. The obtained copper‐doped MIL‐101‐SO3@Cu‐1, MIL‐101‐SO3@Cu‐2, and MIL‐101‐SO3@Cu‐3 catalysts were utilized in the selective oxidation of alcohols and epoxidation of olefins using molecular oxygen as an oxidant. Catalytic aerobic oxidation optimization showed that MIL‐101‐SO3@Cu‐1 is the optimal catalyst and it can be reused ten times without compromising the yield and selectivity.

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Copper Nanoparticles Immobilized on Nanocellulose: A Novel and Efficient Heterogeneous Catalyst for Controlled and Selective Oxidation of Sulfides and Alcohols

Cited by 33 publications

References 41 publications

Iron-Decorated, Guanidine Functionalized Metal-Organic Framework as a Non-heme Iron-Based Enzyme Mimic System for Catalytic Oxidation of Organic Substrates

Iron-Decorated, Guanidine Functionalized Metal-Organic Framework as a Non-heme Iron-Based Enzyme Mimic System for Catalytic Oxidation of Organic Substrates

Para-Selective Borylation of Monosubstituted Arenes Using a Transient Mediator

Copper‐doped sulfonic acid‐functionalized MIL‐101(Cr) metal–organic framework for efficient aerobic oxidation reactions

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