Preparation of a novel 1D Co(II) coordination polymer Co(dpa)(2,2′-bipy)(H2O)2 catalyst for the allylic oxidation of cyclohexene

Feng, Xuemin; Hao, Jianmin; Gao, Yuanyuan; Bai, Weiwei; Cheng, Yangyang; Wang, Feng; Han, Limin; Suo, Quan‐Ling; Wang, Yaqi

doi:10.1016/j.catcom.2017.10.017

Cited by 6 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Feng et al. demonstrated 49.2 % cyclohexene conversion and 35.2 % 2‐cyclohexen‐1‐one selectivity with a Co‐based homogeneous catalyst using O 2 as oxidant [28] . There are a few reports on cyclohexene oxidation using CuO catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…[15] Feng et al demonstrated 49.2 % cyclohexene conversion and 35.2 % 2-cyclohexen-1-one selectivity with a Cobased homogeneous catalyst using O 2 as oxidant. [28] There are a few reports on cyclohexene oxidation using CuO catalyst. In particular, Silva et al employed polyvinyl alcohol (PVA) stabilized CuO catalyst to oxidize cyclohexene with a 48.4 % conversion.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

CuO{001} as the Most Active Exposed Facet for Allylic Oxidation of Cyclohexene via a Greener Route

2020

View full text Add to dashboard Cite

Allylic oxidation of olefins to α,β‐unsaturated carbonyl compounds, especially2‐cyclohexen‐1‐one, by the oxidation of cyclohexene is a prime chemical transformation in the organic industry due to its immense application as an intermediate in the synthesis of fine chemicals, pharmaceutical products, and perfumery products. Herein, we demonstrate microstructured copper oxide (CuO) as an efficient catalyst to oxidize cyclohexene to 2‐cyclohexen‐1‐oneand other value‐added intermediates in the presence of aerobic molecular oxygen as oxidant at 80 °C with outstanding conversion of cyclohexene and high selectivity towards 2‐cyclohexen‐1‐one. CuO with diverse shapes was synthesized by a one‐step hydrothermal method. CuO plates (PLs) and flowers (FLs) were obtained by varying the ammonia and sodium hydroxide concentration, and CuO spheres (SPs) and hollow spheres (HSs) were prepared by varying the urea concentration. Under optimized conditions, the CuO FL2 catalyst shows the highest conversion of cyclohexene (97.6 %) due to its smaller size, higher surface charge, and high‐energy {001} exposed facets. Reaction parameters such as reaction temperature, reaction duration, and catalyst concentration were varied to obtain the optimal reaction conditions for cyclohexene oxidation. Moreover, the CuO FL2 catalyst was recycled several times without any significant loss of catalytic activity, which ascertains recyclability and high stability of the catalyst for industrial use.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CuO{001} as the Most Active Exposed Facet for Allylic Oxidation of Cyclohexene via a Greener Route

2020

View full text Add to dashboard Cite

show abstract

Polymer‐anchored mononuclear and binuclear Cu^II Schiff‐base complexes: Impact of heterogenization on liquid phase catalytic oxidation of a series of alkenes

Maurya

Kesharwani

Kachhap

et al. 2019

Applied Organom Chemis

View full text Add to dashboard Cite

Liquid phase catalytic oxidation of a number of alkenes, for example, cyclohexene, cis‐cyclooctene, styrene, 1‐methyl cyclohexene and 1‐hexene, was performed using polymer‐anchored copper (II) complexes PS‐[Cu (sal‐sch)Cl] (5), PS‐[Cu (sal‐tch)Cl] (6), PS‐[CH2{Cu (sal‐sch)Cl}2] (7) and PS‐[CH2{Cu (sal‐tch)Cl}2] (8). Neat complexes [Cu (sal‐sch)Cl] (1), [Cu (sal‐tch)Cl] (2), [CH2{Cu (sal‐sch)Cl}2] (3) and [CH2{Cu (sal‐tch)Cl}2] (4) were isolated by reacting CuCl2·2H2O with [Hsal‐sch] (I), [Hsal‐tch] (II), [H2bissal‐sch] (III) and [H2bissal‐tch] (IV), respectively, in refluxing methanol. Complexes 1–4 have been covalently anchored in Merrifield resin through the amine nitrogen of the semicarbazide or thiosemicarbazide moiety. A number of analytical, spectroscopic and thermal techniques, such as CHNS analysis, Fourier transform‐infrared, UV–Vis, PMR, 13C‐NMR, electron paramagnetic resonance, scanning electron microscopy, energy‐dispersive X‐ray analysis, thermogravimetric analysis, atomic force microscopy, atomic absorption spectroscopy, and electrospray ionization‐mass spectrometry, were used to analyze and establish the molecular structure of the ligands (I)–(IV) and complexes (1)–(8) in solid state as well as in solution state. Grafted complexes 5–8 were employed as active catalysts for the oxidation of a series of alkenes in the presence of hydrogen peroxide. Copper hydroperoxo species ([CuIII (sal‐sch)‐O‐O‐H]), which is believed to be the active intermediate, generated during the catalytic oxidation of alkenes, are identified. It was found that supported catalysts are very economical, green and efficient in contrast to their neat complexes as well as most of the recently reported heterogeneous catalysts.

show abstract

Polynuclear Cd(II) coordination polymer with unique configuration for chromium pollutants removal

Luo

Huo

2020

Journal of Solid State Chemistry

View full text Add to dashboard Cite

Preparation of a novel 1D Co(II) coordination polymer Co(dpa)(2,2′-bipy)(H2O)2 catalyst for the allylic oxidation of cyclohexene

Cited by 6 publications

References 30 publications

CuO{001} as the Most Active Exposed Facet for Allylic Oxidation of Cyclohexene via a Greener Route

CuO{001} as the Most Active Exposed Facet for Allylic Oxidation of Cyclohexene via a Greener Route

Polymer‐anchored mononuclear and binuclear Cu^II Schiff‐base complexes: Impact of heterogenization on liquid phase catalytic oxidation of a series of alkenes

Polynuclear Cd(II) coordination polymer with unique configuration for chromium pollutants removal

Contact Info

Product

Resources

About

Preparation of a novel 1D Co(II) coordination polymer Co(dpa)(2,2′-bipy)(H2O)2 catalyst for the allylic oxidation of cyclohexene

Cited by 6 publications

References 30 publications

CuO{001} as the Most Active Exposed Facet for Allylic Oxidation of Cyclohexene via a Greener Route

CuO{001} as the Most Active Exposed Facet for Allylic Oxidation of Cyclohexene via a Greener Route

Polymer‐anchored mononuclear and binuclear CuII Schiff‐base complexes: Impact of heterogenization on liquid phase catalytic oxidation of a series of alkenes

Polynuclear Cd(II) coordination polymer with unique configuration for chromium pollutants removal

Contact Info

Product

Resources

About

Polymer‐anchored mononuclear and binuclear Cu^II Schiff‐base complexes: Impact of heterogenization on liquid phase catalytic oxidation of a series of alkenes