1
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Han ZP, Wang S, Sun Q, Xu XP, Ji SJ. Synthesis of Azoxy Compounds: from Copper Compounds to Mesoporous Silica-Encaged Ultrasmall Copper Catalysts. CHEMSUSCHEM 2023; 16:e202300477. [PMID: 37148179 DOI: 10.1002/cssc.202300477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/24/2023] [Accepted: 05/05/2023] [Indexed: 05/08/2023]
Abstract
Azoxy compounds have aroused extensive attention due to their unique biological activities, but the chemical synthesis of these compounds often suffers from limitations due to their requirement for stoichiometric oxidants, high costs, and restricted substrate range. Herein, a series of azoxy compounds were constructed via facile coupling reactions by using cost-effective N-methoxyformamide and nitroso compounds over Cu-based catalysts, affording high product yields with excellent tolerance of functional groups. Significantly, the mesoporous silica nanosphere-encapsulated ultrasmall Cu (Cu@MSN) catalyst was developed via a one-pot synthetic method and first used for the synthesis of azoxy compounds. As compared with copper salt catalysts, the Cu@MSN catalyst exhibited remarkably enhanced catalytic activity and superior recycling stability. Such a Cu@MSN catalyst overcame the inherent drawbacks of low activity, fast deactivation, and difficult recycling of traditional metal salt catalysts in organic reactions. This work provides a green and efficient method for the construction of azoxy compounds and also creates new prospects for the application of nanoporous materials confined metal catalysts in organic synthesis.
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Affiliation(s)
- Zhi-Peng Han
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Shiqi Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
- Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Qiming Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
- Innovation Center of Chemical Science, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Xiao-Ping Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
- Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
- Innovation Center of Chemical Science, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Shun-Jun Ji
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
- Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
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2
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Cai X, Shen Y, Li W, Zhan W, Zhang F, Xu C, Song H. Low-Valent Tungsten-Catalyzed Controllable Oxidative Dehydrogenative Coupling of Anilines. Org Lett 2023; 25:240-245. [PMID: 36573686 DOI: 10.1021/acs.orglett.2c04090] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein, we have developed an efficient tungsten-catalyzed homogeneous system for oxidative dehydrogenative coupling of anilines to selectively produce various azoaromatics and azoxyaromatics as well as 2-substituted indolone N-oxides by simply regulating the reaction solvent with peroxide as a terminal oxidant under additive-free conditions. These findings provide an experimental framework for exploring tungsten catalysis in organic synthesis and offer an efficient and convenient tactic for the selective oxidation of anilines.
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Affiliation(s)
- Xingwei Cai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People's Republic of China
| | - Yang Shen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People's Republic of China
| | - Wei Li
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People's Republic of China
| | - Wentao Zhan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People's Republic of China
| | - Fanjun Zhang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273100, People's Republic of China
| | - Chen Xu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People's Republic of China
| | - Heng Song
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People's Republic of China.,Jiangsu Agrochem Laboratory Company, Limited, Changzhou, Jiangsu 213000, People's Republic of China
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3
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Chen W, Li H, Jin Y, Wu C, Yuan Z, Ma P, Wang J, Niu J. An intriguing tetranuclear Rh-based polyoxometalate for the reduction of nitroarene and oxidation of aniline. Chem Commun (Camb) 2022; 58:9902-9905. [PMID: 35975716 DOI: 10.1039/d2cc03076d] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organic-inorganic hybrid polyoxometalate Na5H5.68 [Na0.17Rh0.83III(C6H8N2)2Cl2]2(C8H8N2)2[As4W40O140Rh4IV(C6H4N2S)2]·nH2O (1) containing 5.66 Rh atoms is prepared; to our knowledge, it owns the largest number of Rh atoms in the Rh-POM family. Compound 1 demonstrates good catalytic performance in the reduction of nitrobenzene to aniline and the oxidation of aniline to azobenzene under mild conditions. Moreover, catalyst 1 exhibits high activity, excellent stability and recyclability.
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Affiliation(s)
- Wenjing Chen
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Yuzhen Jin
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Che Wu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Zelong Yuan
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. .,Henan University, Kaifeng, Henan 475004, P. R. China.
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4
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Qin J, Long Y, Sun F, Zhou P, Wang WD, Luo N, Ma J. Zr(OH)
4
‐Catalyzed Controllable Selective Oxidation of Anilines to Azoxybenzenes, Azobenzenes and Nitrosobenzenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiaheng Qin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) the Key Laboratory of Catalytic Engineering of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Yu Long
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) the Key Laboratory of Catalytic Engineering of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Fangkun Sun
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) the Key Laboratory of Catalytic Engineering of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Pan‐Pan Zhou
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) the Key Laboratory of Catalytic Engineering of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Wei David Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) the Key Laboratory of Catalytic Engineering of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Nan Luo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) the Key Laboratory of Catalytic Engineering of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Jiantai Ma
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) the Key Laboratory of Catalytic Engineering of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
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5
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Qin J, Long Y, Sun F, Zhou PP, Wang WD, Luo N, Ma J. Zr(OH)4 Catalyzed Controllable Selective Oxidation of Anilines to Azoxybenzenes, Azobenzenes and Nitrosobenzenes. Angew Chem Int Ed Engl 2021; 61:e202112907. [PMID: 34643982 DOI: 10.1002/anie.202112907] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Indexed: 11/08/2022]
Abstract
The selective oxidation of aniline to metastable and valuable azoxybenzene, azobenzene or nitrosobenzene has important practical significance in organic synthesis. However, uncontrollable selectivity and laborious synthesis of the expensive required catalysts severely hinder the uptake of these reactions in industrial settings. Herein, we have pioneered the discovery of Zr(OH) 4 as an efficient heterogeneous catalyst capable of the selective oxidation of aniline, using either peroxide or O 2 as oxidant, to selectively obtain various azoxybenzenes, symmetric/unsymmetric azobenzenes, as well as nitrosobenzenes, by simply regulating the reaction solvent, without the need for additives. Mechanistic experiments and DFT calculations demonstrate that the activation of H 2 O 2 and O 2 is primarily achieved by the bridging hydroxyl and terminal hydroxyl groups of Zr(OH) 4 respectively. The present work provides an economical and environmentally friendly strategy for the selective oxidation of aniline in industrial applications.
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Affiliation(s)
- Jiaheng Qin
- Lanzhou University, College of Chemistry and Chemical Engineering, CHINA
| | - Yu Long
- Lanzhou University, College of Chemistry and Chemical Engineering, CHINA
| | - Fangkun Sun
- Lanzhou University, College of Chemistry and Chemical Engineering, CHINA
| | - Pan-Pan Zhou
- Lanzhou University, College of Chemistry and Chemical Engineering, CHINA
| | - Wei David Wang
- Lanzhou University, College of Chemistry and Chemical Engineering, CHINA
| | - Nan Luo
- Lanzhou University, College of Chemistry and Chemical Engineering, CHINA
| | - Jiantai Ma
- Lanzhou university, Department of Chemistry and Chemical engineering, tianshui road 222#, 730000, Lanzhou, CHINA
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6
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Raghav H, Siva Kumar Konathala L, Mishra N, Joshi B, Goyal R, Agrawal A, Sarkar B. Fe-decorated hierarchical molybdenum carbide for direct conversion of CO2 into ethylene: Tailoring activity and stability. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Tomioka N, Nanbu S, Misawa-Suzuki T, Nagao H. N–C bond formation between two anilines coordinated to a ruthenium center in cis-form affording a 3,5-cyclohexadiene-1,2-diimine moiety. RSC Adv 2021; 11:36644-36650. [PMID: 35494383 PMCID: PMC9043462 DOI: 10.1039/d1ra07736h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 11/04/2021] [Indexed: 11/21/2022] Open
Abstract
Four-electron oxidation of two anilines coordinated to a ruthenium(ii) center in a cis-form affords N1-phenylcyclohexa-3,5-diene-1,2-diimine through an N–C bond formation with N–H and C–H bond activation.
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Affiliation(s)
- Nozomi Tomioka
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Shinkoh Nanbu
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Tomoyo Misawa-Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Hirotaka Nagao
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
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8
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Agrawal A, Goyal R, Abraham BM, Singh O, Tripathi S, Poddar MK, Bal R, Sarkar B. Synthesis of sub-nanometric Cu2O catalysts for Pd-free C–C coupling reactions. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00054c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The current template route provides Cu2O nanocrystals with various shapes and depends on the homologues of glucose. These morphology-controlled Cu2O nanocrystals show high activity for the external base-free Ullmann homocoupling of aryl halides.
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Affiliation(s)
- Ankit Agrawal
- Catalytic Depolymerization Area
- Upstream & Wax Rheology Division
- CSIR-Indian Institute of Petroleum
- Dehradun 248005
- India
| | - Reena Goyal
- Department of Chemical Engineering
- Indian Institute of Technology-Roorkee
- Roorkee 247667
- India
- Nano Catalysis Area
| | - B. Moses Abraham
- Advanced Centre of Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| | - Omvir Singh
- Catalytic Depolymerization Area
- Upstream & Wax Rheology Division
- CSIR-Indian Institute of Petroleum
- Dehradun 248005
- India
| | - Shailendra Tripathi
- Catalytic Depolymerization Area
- Upstream & Wax Rheology Division
- CSIR-Indian Institute of Petroleum
- Dehradun 248005
- India
| | - Mukesh K. Poddar
- Nano Catalysis Area
- Light Stock Processing Division
- CSIR-Indian Institute of Petroleum
- Dehradun 248005
- India
| | - Rajaram Bal
- Nano Catalysis Area
- Light Stock Processing Division
- CSIR-Indian Institute of Petroleum
- Dehradun 248005
- India
| | - Bipul Sarkar
- Catalytic Depolymerization Area
- Upstream & Wax Rheology Division
- CSIR-Indian Institute of Petroleum
- Dehradun 248005
- India
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9
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Goyal R, Singh O, Agrawal A, Samanta C, Sarkar B. Advantages and limitations of catalytic oxidation with hydrogen peroxide: from bulk chemicals to lab scale process. CATALYSIS REVIEWS 2020. [DOI: 10.1080/01614940.2020.1796190] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Reena Goyal
- Refinery Technology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
- Department of Chemical Engineering, Indian Institute of Technology-Roorkee, Uttarakhand, India
| | - Omvir Singh
- Upstream & Wax Rheology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
| | - Ankit Agrawal
- Upstream & Wax Rheology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
| | - Chanchal Samanta
- Corporate R&D Center, Bharat Petroleum Corporation Limited, Greater Noida, India
| | - Bipul Sarkar
- Upstream & Wax Rheology Division, CSIR-Indian Institute of Petroleum, Dehradun, India
- SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, Gyeong Gi-Do, South Korea
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10
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Abstract
Recalcitrant sulfur compounds are common impurities in crude oil. During combustion they produce SOx derivatives that are able to affect the atmospheric ozone layer, increasing the formation of acid rains, and reducing the life of the engine due to corrosion. In the last twenty years, many efforts have been devoted to develop conventional hydrodesulfurization (HDS) procedures, as well as alternative methods, such as selective adsorption, bio-desulfurization, oxidative desulfurization (ODS) under extractive conditions (ECODS), and others. Among them, the oxidative procedures have been usually accomplished by the use of toxic stoichiometric oxidants, namely potassium permanganate, sodium bromate and carboxylic and sulfonic peracids. As an alternative, increasing interest is devoted to selective and economical procedures based upon catalytic methods. Heterogeneous catalysis is of relevance in industrial ODS processes, since it reduces the leaching of active species and favors the recovery and reuse of the catalyst for successive transformations. The heterogenization of different types of high-valent metal transition-based organometallic complexes, able to promote the activation of stoichiometric benign oxidants like peroxides, can be achieved using various solid supports. Many successful cases have been frequently associated with the use of mesoporous silicas that have the advantage of easy surface modification by reaction with organosilanes, facilitating the immobilization of homogeneous catalysts. In this manuscript the application of SBA-15 as efficient support for different active metal species, able to promote the catalytic ODS of either model or real fuels is reviewed, highlighting its beneficial properties such as high surface area, narrow pore size distribution and tunable pore diameter dimensions. Related to this topic, the most relevant advances recently published, will be discussed and critically described.
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11
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Yang G, Zhang X, Yang H, Long Y, Ma J. Sucrose facilitated synthesis of mesoporous silicoaluminophosphate SAPO-11 with different crystalline phases of MoO3 for highly-efficient oxidative desulfurization. J Colloid Interface Sci 2018; 532:92-102. [DOI: 10.1016/j.jcis.2018.07.074] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 11/26/2022]
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12
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de Souza GF, von Zuben TW, Salles AG. A metal-catalyst-free oxidative coupling of anilines to aromatic azo compounds in water using bleach. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.08.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Goyal R, Sameer S, Sarkar B, Bag A, Singhal N, Bordoloi A. Synthesis of AgWCN
x
Nanocomposites for the One-Step Conversion of Cyclohexene to Adipic Acid and Its Mechanistic Studies. Chemistry 2017; 23:16555-16565. [DOI: 10.1002/chem.201703111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Reena Goyal
- Nano Catalysis area, Refinery Technology Division; CSIR-Indian Institute of Petroleum; Dehradun 248005 India
| | - Siddharth Sameer
- Nano Catalysis area, Refinery Technology Division; CSIR-Indian Institute of Petroleum; Dehradun 248005 India
| | - Bipul Sarkar
- Nano Catalysis area, Refinery Technology Division; CSIR-Indian Institute of Petroleum; Dehradun 248005 India
- Chemical Science Division; CSIR-Indian Institute of Petroleum; Dehradun 248005 India
| | - Arijit Bag
- Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; West-Bengal India
| | - Nikita Singhal
- Nano Catalysis area, Refinery Technology Division; CSIR-Indian Institute of Petroleum; Dehradun 248005 India
| | - Ankur Bordoloi
- Nano Catalysis area, Refinery Technology Division; CSIR-Indian Institute of Petroleum; Dehradun 248005 India
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14
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Meenakshi R, Shakeela K, Kutti Rani S, Ranga Rao G. Oxidation of Aniline to Nitrobenzene Catalysed by 1-Butyl-3-methyl imidazolium phosphotungstate Hybrid Material Using m-chloroperbenzoic Acid as an Oxidant. Catal Letters 2017. [DOI: 10.1007/s10562-017-2214-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Goyal R, Sarkar B, Sameer S, Singhal N, Bordoloi A. Role of Pyridinic Nitrogen on Base Catalyzed Knoevenagel Condensation over Pristine CNx. ChemistrySelect 2017. [DOI: 10.1002/slct.201701319] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Reena Goyal
- Refinery Technology Division; CSIR- Indian Institute of Petroleum; Dehradun-248005, UK India
| | - Bipul Sarkar
- Refinery Technology Division; CSIR- Indian Institute of Petroleum; Dehradun-248005, UK India
- Chemical Sciences Division; CSIR- Indian Institute of Petroleum; Dehradun-248005, UK India
| | - Siddharth Sameer
- Refinery Technology Division; CSIR- Indian Institute of Petroleum; Dehradun-248005, UK India
| | - Nikita Singhal
- Chemical Sciences Division; CSIR- Indian Institute of Petroleum; Dehradun-248005, UK India
| | - Ankur Bordoloi
- Refinery Technology Division; CSIR- Indian Institute of Petroleum; Dehradun-248005, UK India
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16
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Highly nanodispersed Gd-doped Ni/ZSM-5 catalyst for enhanced carbon-resistant dry reforming of methane. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.08.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Studies of synergy between metal–support interfaces and selective hydrogenation of HMF to DMF in water. J Catal 2016. [DOI: 10.1016/j.jcat.2016.05.012] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Wang M, Ma J, Yu M, Zhang Z, Wang F. Oxidative coupling of anilines to azobenzenes using heterogeneous manganese oxide catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01015b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cryptomelane-type manganese oxide shows high efficiency for the NN formation reaction in the oxidative coupling of anilines to azobenzenes. The difference of the Hammett constants (Δσ) of two substituted groups determines the selectivity to unsymmetric azobenzenes in cross-coupling reactions, which are favored at Δσ < 0.32.
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Affiliation(s)
- Min Wang
- State Key Laboratory of Catalysis
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
| | - Jiping Ma
- State Key Laboratory of Catalysis
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
| | - Miao Yu
- State Key Laboratory of Catalysis
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
| | - Zhe Zhang
- State Key Laboratory of Catalysis
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
| | - Feng Wang
- State Key Laboratory of Catalysis
- Dalian National Laboratory for Clean Energy
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
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19
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Xun S, Zheng D, Yin S, Qin Y, Zhang M, Jiang W, Zhu W, Li H. TiO2 microspheres supported polyoxometalate-based ionic liquids induced catalytic oxidative deep-desulfurization. RSC Adv 2016. [DOI: 10.1039/c6ra03895f] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A series of TiO2 microspheres supported [SiW12O40]4−-based ionic liquids were successfully prepared and used as catalysts in oxidative desulfurization system. DBT was oxidized to DBT sulfone (DBTO2) efficiently with the help of the catalyst and H2O2.
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Affiliation(s)
- Suhang Xun
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Dan Zheng
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Sheng Yin
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Yuejiao Qin
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Ming Zhang
- Insititute for Energy Research
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Wei Jiang
- Insititute for Energy Research
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Wenshuai Zhu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Huaming Li
- Insititute for Energy Research
- Jiangsu University
- Zhenjiang
- P. R. China
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