1
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Kumar N, Yadav RK, Umar A, Ibrahim AA, Singh S, Shahin R, Singh AP, Gupta AK, Gupta NK, Baeg JO, Dwivedi DK, Baskoutas S. Selective aerobic coupling of amines to imines using solar spectrum-responsive flower-like Nen-graphene quantum dots (GQDs) decorated with 2, 4-dinitrophenylhydrazine (PH) as a photocatalyst. CHEMOSPHERE 2023; 341:139697. [PMID: 37567274 DOI: 10.1016/j.chemosphere.2023.139697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/09/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023]
Abstract
Indeed, the development of ecologically benign molecular fabrication methods for highly efficient graphene quantum dots-based photocatalysts is of great significant. Graphene quantum dots-based photocatalysts have promising applications in various field, including environmental remediation, energy conversion, and splitting of water. However, ensuring resource reusability and minimizing the environmental impact are crucial considerations in the development. From this perspective, attention has also been paid to the creation of easy to make solar light harvesting graphene quantum dots-based photocatalysts for synthesising pharmaceuticals and functional imines compounds. Imines are excellent significant building blocks in pharmaceutical chemistry and excellent examples of these valuable compounds' synthetic intermediates, and the environmentally friendly oxidative synthesis of imines from amines. Therefore, herein, we designed a facile and efficient condensation route to synthesize the Nen-GQDs@PH photocatalyst. This route involves coupling of 2,4-dinitrophenylhydrazine (PH) with nitrogen-enriched graphene quantum dots (Nen-GQDs). The Nen-GQDs@PH as photocatalyst functions in a highly selective and efficient manner, leading to high amines conversion efficiency to imines (95%). Our results highlight a novel and environmentally safe approach for generating highly selective imines from various types of amines, setting a new benchmark in the current research field.
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Affiliation(s)
- Neetesh Kumar
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Rajesh K Yadav
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India.
| | - Ahmad Umar
- Department of Chemistry, College of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia; Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA.
| | - Ahmed A Ibrahim
- Department of Chemistry, College of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia
| | - Satyam Singh
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Rehana Shahin
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Atul P Singh
- Department of Chemistry, Chandigarh University, Mohali, 140413, India
| | - Abhishek K Gupta
- Nanoionic and Energy Storage Laboratory (NanoESL), Department of Physics and Material Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, UP, India
| | - Navneet K Gupta
- Centre for Sustainable Technologies, Indian Institute of Science, Gulmohar Marg, Mathikere, Bengaluru, 560012, India
| | - Jin Ook Baeg
- Korea Research Institute of Chemical Technology, N3, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, South Korea.
| | - Dilip K Dwivedi
- Department of Physics and Materials Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Sotirios Baskoutas
- Department of Materials Science, University of Patras, 26500, Patras, Greece
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2
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Zhao JX, Wang W, Jiao ZF, Guo XY. A highly efficient defective carbon catalyst for oxidative coupling of amines. CATAL COMMUN 2023. [DOI: 10.1016/j.catcom.2023.106652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
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3
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He Y, Zhang H, Wang Z, Zheng Z, Wang P, Liu Y, Cheng H, Zhang X, Da Y, Huang B. Photoelectrochemical Oxidation of Amines to Imines and Production of Hydrogen through Mo-Doped BiVO 4 Photoanode. ACS OMEGA 2022; 7:12816-12824. [PMID: 35474823 PMCID: PMC9026016 DOI: 10.1021/acsomega.2c00048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
Imines are important multifunctional intermediates for the synthesis of pesticides, pharmaceuticals, biologics, and fine chemicals. The direct photoelectrochemical (PEC) oxidation of amines to imines is a highly selective, efficient, green, and gentle method. Interestingly, the constructive merging of the PEC oxidation of amines with the production of hydrogen can accelerate hydrogen evolution due to the less challenging oxidation of amines such as benzylamine (BN) in comparison to sluggish water oxidation. Herein, Mo-doped BiVO4 photoanodes were prepared and first applied to simultaneously oxide benzylamine (BN) to N-benzylidenebenzylamine (BI) and produce hydrogen in a closed two-chamber, three-electrode PEC cell After illumination at a bias of 1.3 V vs SCE for 3 h, the 3% Mo-doped BiVO4 photoanode achieved a maximum yield of ∼94 μmol h-1 at a 1 × 1 cm2 area with a BN to BI selectivity of almost 100% and a Faradaic efficiency of 98.4%. Our electrode presented enhanced photocorrosion resistance in acetonitrile solvent. Additionally, the PEC oxidations of benzylamine derivatives with different substituents (-F, -Cl, -Br, -CH3, -OCH3) to the corresponding imines were also investigated. The results indicated that the Mo-doped BiVO4 photoanode exhibited an excellent performance in the oxidation of these benzylamine derivatives with corresponding amine to imine selectivities of almost 100% and Faradaic efficiencies of >95%.
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Affiliation(s)
- Yujie He
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Haipeng Zhang
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Zeyan Wang
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Zhaoke Zheng
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Peng Wang
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Yuanyuan Liu
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Hefeng Cheng
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Xiaoyang Zhang
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
| | - Ying Da
- School
of Physics, Shandong University, Jinan 250100, People’s Republic of China
| | - Baibiao Huang
- State
Key Laboratory of Crystal Materials, Shandong
University, Jinan 250100, People’s Republic
of China
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4
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Lyu S, Hao H, Li X, Lang X. Cooperative TiO 2 photocatalysis with TEMPO and N-hydroxysuccinimide for blue light-driven selective aerobic oxidation of amines. CHEMOSPHERE 2021; 262:127873. [PMID: 33182137 DOI: 10.1016/j.chemosphere.2020.127873] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
TiO2 has been the focus of attention in semiconductor photocatalysis for several decades because it can potentially settle the grand energy and environmental issues with earth-abundant elements of Ti and O. However, because of its wide band gap, TiO2 can only collect UV light, hindering its practical applications under the illumination of sunlight. In view of this, an interesting phenomenon of light-driven adsorption of amines onto TiO2 to form a visible light-absorbing complex was adapted to assemble smart photocatalysis. The endurance of this complex was eminently refurbished by blue light-driven continuous adsorption of amines. This in turn promoted a vital selective chemical transformation, blue light-driven selective oxidation of amines into imines with atmospheric dioxygen (O2). More importantly, the inclusion of TEMPO and N-hydroxysuccinimide (NHS) into the smart photocatalytic system could cooperatively expedite the blue light-driven selective aerobic oxidation of amines into imines through dual independent reaction channels, resembling that of enzymatic catalysis. This work underscores the importance of manoeuvring multiple reaction channels by cooperative photocatalysis during selective chemical transformations.
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Affiliation(s)
- Shaoshuai Lyu
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Huimin Hao
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Xia Li
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Xianjun Lang
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China.
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5
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Fan Q, Zhu L, Li X, Ren H, Zhu H, Wu G, Ding J. Visible-light photocatalytic selective oxidation of amine and sulfide with CsPbBr 3 as photocatalyst. NEW J CHEM 2021. [DOI: 10.1039/d1nj02595c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Using CsPbBr3 as a visible-light catalyst, a facile protocol for photocatalytic oxidation of amines and sulfides is reported, generating aldehydes, imines and sulfoxide with excellent yields and selectivity.
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Affiliation(s)
- Qiangwen Fan
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Longwei Zhu
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Xuhuai Li
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Huijun Ren
- State Key Laboratory of Nuclear Resources and Environment
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Haibo Zhu
- Jiangxi Province Key Laboratory of Synthetic Chemistry
- School of Chemistry, Biology and Materials Science
- East China University of Technology
- Nanchang
- China
| | - Guorong Wu
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices
- East China University of Technology
- Nanchang
- China
| | - Jianhua Ding
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation
- East China University of Technology
- Nanchang
- China
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6
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Zhang P, Yu C, Yin Y, Droste J, Klabunde S, Hansen MR, Mai Y. Bis-Anthracene Fused Porphyrin as an Efficient Photocatalyst: Facile Synthesis and Visible-Light-Driven Oxidative Coupling of Amines. Chemistry 2020; 26:16497-16503. [PMID: 32720370 DOI: 10.1002/chem.202003398] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Indexed: 12/18/2022]
Abstract
Development of high-performance photocatalysts for the conversion of amines is of great importance, but has remained a challenging task. Here, a bis-anthracene fused porphyrin (AFP) was synthesized in a high yield by a facile synthetic protocol, which involves a Suzuki coupling for the conjugation of two anthracene groups with a porphyrin ring, followed by oxidative cyclodehydrogenation. When serving as a photocatalyst, AFP exhibits an outstanding photocatalytic performance for the visible-light-induced aerobic oxidation of amines to imines at ambient conditions. Density functional theory calculations revealed that the low energy band gap, caused by the large planar and π-extended porphyrin structure of AFP, contributed to its high photocatalytic performance.
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Affiliation(s)
- Pengfei Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Chunyang Yu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yucheng Yin
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Jörn Droste
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 28/30, 48149, Münster, Germany
| | - Sina Klabunde
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 28/30, 48149, Münster, Germany
| | - Michael Ryan Hansen
- Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 28/30, 48149, Münster, Germany
| | - Yiyong Mai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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7
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Dong C, Yu Q, Ye R, Su P, Liu J, Wang G. Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void-Confinement Effects in Liquid-Phase Hydrogenations. Angew Chem Int Ed Engl 2020; 59:18374-18379. [PMID: 32588534 PMCID: PMC7590117 DOI: 10.1002/anie.202007297] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Indexed: 01/14/2023]
Abstract
Nanoreactors with hollow structures have attracted great interest in catalysis research due to their void-confinement effects. However, the challenge in unambiguously unraveling these confinement effects is to decouple them from other factors affecting catalysis. Here, we synthesize a pair of hollow carbon sphere (HCS) nanoreactors with presynthesized PdCu nanoparticles encapsulated inside of HCS (PdCu@HCS) and supported outside of HCS (PdCu/HCS), respectively, while keeping other structural features the same. Based on the two comparative nanoreactors, void-confinement effects in liquid-phase hydrogenation are investigated in a two-chamber reactor. It is found that hydrogenations over PdCu@HCS are shape-selective catalysis, can be accelerated (accumulation of reactants), decelerated (mass transfer limitation), and even inhibited (molecular-sieving effect); conversion of the intermediate in the void space can be further promoted. Using this principle, a specific imine is selectively produced. This work provides a proof of concept for fundamental catalytic action of the hollow nanoreactors.
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Affiliation(s)
- Chao Dong
- Key Laboratory of BiofuelsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao266101China
| | - Qun Yu
- Key Laboratory of BiofuelsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao266101China
- University of Chinese Academy of SciencesBeijing100049China
| | - Run‐Ping Ye
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China
| | - Panpan Su
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China
| | - Jian Liu
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China
- University of Chinese Academy of SciencesBeijing100049China
- Dalian National Laboratory for Clean EnergyDalian116023China
- DICP-Surrey Joint Centre for Future MaterialsDepartment of Chemical and Process Engineering, andAdvanced Technology InstituteUniversity of SurreyGuilfordGU2 7XHUK
| | - Guang‐Hui Wang
- Key Laboratory of BiofuelsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao266101China
- University of Chinese Academy of SciencesBeijing100049China
- Dalian National Laboratory for Clean EnergyDalian116023China
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8
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Dong C, Yu Q, Ye R, Su P, Liu J, Wang G. Hollow Carbon Sphere Nanoreactors Loaded with PdCu Nanoparticles: Void‐Confinement Effects in Liquid‐Phase Hydrogenations. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007297] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chao Dong
- Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China
| | - Qun Yu
- Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Run‐Ping Ye
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Panpan Su
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Jian Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Dalian National Laboratory for Clean Energy Dalian 116023 China
- DICP-Surrey Joint Centre for Future Materials Department of Chemical and Process Engineering, and Advanced Technology Institute University of Surrey Guilford GU2 7XH UK
| | - Guang‐Hui Wang
- Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Dalian National Laboratory for Clean Energy Dalian 116023 China
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9
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Liu R, Meng S, Ma Y, Niu L, He S, Xu X, Su B, Lu D, Yang Z, Lei Z. Atmospherical oxidative coupling of amines by UiO-66-NH2 photocatalysis under milder reaction conditions. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.03.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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10
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Kumar A, Sadanandhan AM, Jain SL. Silver doped reduced graphene oxide as a promising plasmonic photocatalyst for oxidative coupling of benzylamines under visible light irradiation. NEW J CHEM 2019. [DOI: 10.1039/c9nj00852g] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible light assisted photocatalytic reduction of nitro-compounds has been found as an efficient and sustainable approach for the production of amines.
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Affiliation(s)
- Anurag Kumar
- Chemical Sciences Division
- CSIR-Indian Institute of Petroleum
- Dehradun
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | | | - Suman L. Jain
- Chemical Sciences Division
- CSIR-Indian Institute of Petroleum
- Dehradun
- India
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11
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Affiliation(s)
- Ronghua Jin
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key, Laboratory of Rare Earth Functional Materials; Shanghai Normal University; No.100 Guilin Rd Shanghai P.R. China
| | - Dongsong Zheng
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key, Laboratory of Rare Earth Functional Materials; Shanghai Normal University; No.100 Guilin Rd Shanghai P.R. China
| | - Rui Liu
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key, Laboratory of Rare Earth Functional Materials; Shanghai Normal University; No.100 Guilin Rd Shanghai P.R. China
| | - Guohua Liu
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key, Laboratory of Rare Earth Functional Materials; Shanghai Normal University; No.100 Guilin Rd Shanghai P.R. China
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12
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Proctor AD, Panuganti S, Bartlett BM. CuWO4 as a photocatalyst for room temperature aerobic benzylamine oxidation. Chem Commun (Camb) 2018; 54:1101-1104. [DOI: 10.1039/c7cc07611h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We report the first example of a controlled photo-oxidation reaction on CuWO4, the aerobic oxidative coupling of benzylamine.
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13
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Zhang C, Zhao P, Zhang Z, Zhang J, Yang P, Gao P, Gao J, Liu D. Co–N–C supported on SiO2: a facile, efficient catalyst for aerobic oxidation of amines to imines. RSC Adv 2017. [DOI: 10.1039/c7ra09516c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The aerobic oxidation of amines to imines was catalyzed by Co–C–N/SiO2 which was obtained by the pyrolysis of silicone gel containing metal ion and triethanolamine.
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Affiliation(s)
- Chenghui Zhang
- College of Chemical and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao
- P. R. China
| | - Pengshan Zhao
- College of Chemical and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao
- P. R. China
| | - Zongliang Zhang
- State Key Laboratory of Bioactive Seaweed Substances
- Qingdao Brightmoon Seaweed Group Co Ltd
- Qingdao
- P. R. China
| | - Jingwei Zhang
- College of Chemical and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao
- P. R. China
| | - Ping Yang
- College of Chemical and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao
- P. R. China
| | - Peng Gao
- State Key Laboratory of Bioactive Seaweed Substances
- Qingdao Brightmoon Seaweed Group Co Ltd
- Qingdao
- P. R. China
| | - Jun Gao
- College of Chemical and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao
- P. R. China
| | - Di Liu
- College of Chemical and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao
- P. R. China
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14
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Lang X, Hao W, Leow WR, Li S, Zhao J, Chen X. Tertiary amine mediated aerobic oxidation of sulfides into sulfoxides by visible-light photoredox catalysis on TiO 2. Chem Sci 2015; 6:5000-5005. [PMID: 29142727 PMCID: PMC5664354 DOI: 10.1039/c5sc01813g] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 06/09/2015] [Indexed: 11/21/2022] Open
Abstract
The selective oxidation of sulfides into sulfoxides receives much attention due to industrial and biological applications. However, the realization of this reaction with molecular oxygen at room temperature, which is of importance towards green and sustainable chemistry, remains challenging. Herein, we develop a strategy to achieve the aerobic oxidation of sulfides into sulfoxides by exploring the synergy between a tertiary amine and titanium dioxide via visible-light photoredox catalysis. Specifically, titanium dioxide can interact with triethylamine (TEA) to form a visible-light harvesting surface complex, preluding the ensuing selective redox reaction. Moreover, TEA, whose stability was demonstrated by a turnover number of 32, plays a critical role as a redox mediator by shuttling electrons during the oxidation of sulfide. This work suggests that the addition of a redox mediator is highly functional in establishing visible-light-induced reactions via heterogeneous photoredox catalysis.
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Affiliation(s)
- Xianjun Lang
- School of Materials Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore . ;
| | - Wei Hao
- School of Materials Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore . ;
| | - Wan Ru Leow
- School of Materials Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore . ;
| | - Shuzhou Li
- School of Materials Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore . ;
| | - Jincai Zhao
- Key Laboratory of Photochemistry , Beijing National Laboratory for Molecular Sciences , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Xiaodong Chen
- School of Materials Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798 , Singapore . ;
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