1
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Deka H, Ritacco I, Fridman N, Caporaso L, Eisen MS. Catalytic regeneration of metal-hydrides from their corresponding metal-alkoxides via the hydroboration of carbonates to obtain methanol and diols. Chem Sci 2023; 14:8369-8379. [PMID: 37576386 PMCID: PMC10413203 DOI: 10.1039/d3sc01700a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/24/2023] [Indexed: 08/15/2023] Open
Abstract
Thorium complexes decorated with 5-, 6-, and 7-membered N-heterocyclic iminato ligands containing mesityl wingtip substitutions have been synthesized and fully characterized. These complexes were found to be efficient in the hydroboration of cyclic and linear organic carbonates with HBpin or 9-BBN promoting their decarbonylation and producing the corresponding boronated diols and methanol. In addition, the hydroboration of CO2 breaks the molecule into "CO" and "O" forming boronated methanol and pinBOBpin. Moreover, the demanding depolymerization of polycarbonates to the corresponding boronated diols and methanol opens the possibility of recycling polymers for energy sources. Increasing the core ring size of the ligands allows a better performance of the complexes. The reaction proceeds with high yields under mild reaction conditions, with low catalyst loading, and short reaction times, and shows a broad applicability scope. The reaction is achieved via the recycling of a high-energy Th-H moiety from a stable Th-OR motif. Experimental evidence and DFT calculations corroborate the formation of the thorium hydride species and the reduction of the carbonate with HBpin to the corresponding Bpin-protected alcohols and H3COBpin through the formate and acetal intermediates.
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Affiliation(s)
- Hemanta Deka
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City Haifa 3200003 Israel
- Department of Chemistry, Goalpara College Goalpara 783101 Assam India
| | - Ida Ritacco
- Dipartimento di Chimica e Biologia "Adolfo Zambelli", Università degli Studi di Salerno Via Giovanni Paolo II, 132, 84084 Fisciano Salerno Italy
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City Haifa 3200003 Israel
| | - Lucia Caporaso
- Dipartimento di Chimica e Biologia "Adolfo Zambelli", Università degli Studi di Salerno Via Giovanni Paolo II, 132, 84084 Fisciano Salerno Italy
| | - Moris S Eisen
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City Haifa 3200003 Israel
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2
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Wang Z, Chen S, Chen C, Yang Y, Wang C. Manganese-Catalyzed Hydrogenative Desulfurization of Thioamides. Angew Chem Int Ed Engl 2023; 62:e202215963. [PMID: 36428247 DOI: 10.1002/anie.202215963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/25/2022] [Accepted: 11/25/2022] [Indexed: 11/27/2022]
Abstract
Earth-abundant transition metal catalysis has emerged as an important alternative to noble transition metal catalysis in hydrogenation reactions. However, there has been no Earth-abundant transition metal catalyzed hydrogenation of thioamides reported so far, presumably due to the poisoning of catalysts by sulfur-containing molecules. Herein, we described the first manganese-catalyzed hydrogenative desulfurization of thioamides to amines or imines. The key to success is the use of MnBr(CO)5 instead of commonly-employed pincer-manganese catalysts, together with simple NEt3 and CuBr. This protocol features excellent selectivity on sole cleavage of the C=S bond of thioamides, in contrast to the only known Ru-catalyzed hydrogenation of thioamides, and unprecedented chemo-selectivity tolerating vulnerable functional groups such as nitrile, ketone, aldehyde, ester, sulfone, nitro, olefin, alkyne and heterocycle, which are usually susceptible to common hydride-type reductive protocols.
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Affiliation(s)
- Zelong Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Silin Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,Wuyi University, School of Biotechnology and Health Sciences, Jiangmen, 529020, China
| | - Chao Chen
- Wuyi University, School of Biotechnology and Health Sciences, Jiangmen, 529020, China.,Department of Chemistry, Tsinghua University, Beijing, 10084, China
| | - Yunhui Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Congyang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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3
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Papa V, Fessler J, Zaccaria F, Hervochon J, Dam P, Kubis C, Spannenberg A, Wei Z, Jiao H, Zuccaccia C, Macchioni A, Junge K, Beller M. Efficient Hydrogenation of N-Heterocycles Catalyzed by NNP-Manganese(I) Pincer Complexes at Ambient Temperature. Chemistry 2023; 29:e202202774. [PMID: 36193859 PMCID: PMC10100126 DOI: 10.1002/chem.202202774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 11/06/2022]
Abstract
Manganese-catalyzed hydrogenation reactions have aroused widespread interest in recent years. Among the catalytic systems described, especially PNP- and NNP-Mn pincer catalysts have been reported for the hydrogenation of aldehydes, ketones, nitriles, aldimines and esters. Furthermore, NNP-Mn pincer compounds are efficient catalysts for the hydrogenolysis of less reactive amides, ureas, carbonates, and carbamates. Herein, the synthesis and application of specific imidazolylaminophosphine ligands and the corresponding Mn pincer complexes are described. These new catalysts have been characterized and studied by a combination of experimental and theoretical investigations, and their catalytic activities have been tested in several hydrogenation reactions with good to excellent performance. Especially, the reduction of N-heterocycles can be performed under very mild conditions.
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Affiliation(s)
- Veronica Papa
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
- Istituto italiano di tecnologiaVia Morego 3016163GenovaItaly
| | - Johannes Fessler
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
| | - Francesco Zaccaria
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCCUniversità degli Studi di Perugia06123PerugiaItaly
| | - Julien Hervochon
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
| | - Phong Dam
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
| | - Christoph Kubis
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
| | - Zhihong Wei
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
- Institute of Molecular ScienceKey Laboratory of Materials for Energy Conversion and Storage of Shanxi ProvinceShanxi University030006TaiyuanP. R. China
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCCUniversità degli Studi di Perugia06123PerugiaItaly
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCCUniversità degli Studi di Perugia06123PerugiaItaly
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29A18059RostockGermany
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4
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Sen R, Goeppert A, Surya Prakash GK. Homogeneous Hydrogenation of CO 2 and CO to Methanol: The Renaissance of Low-Temperature Catalysis in the Context of the Methanol Economy. Angew Chem Int Ed Engl 2022; 61:e202207278. [PMID: 35921247 PMCID: PMC9825957 DOI: 10.1002/anie.202207278] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Indexed: 01/11/2023]
Abstract
The traditional economy based on carbon-intensive fuels and materials has led to an exponential rise in anthropogenic CO2 emissions. Outpacing the natural carbon cycle, atmospheric CO2 levels increased by 50 % since the pre-industrial age and can be directly linked to global warming. Being at the core of the proposed methanol economy pioneered by the late George A. Olah, the chemical recycling of CO2 to produce methanol, a green fuel and feedstock, is a prime channel to achieve carbon neutrality. In this direction, homogeneous catalytic systems have lately been a major focus for methanol synthesis from CO2 , CO and their derivatives as potential low-temperature alternatives to the commercial processes. This Review provides an account of this rapidly growing field over the past decade, since its resurgence in 2011. Based on the critical assessment of the progress thus far, the present key challenges in this field have been highlighted and potential directions have been suggested for practically viable applications.
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Affiliation(s)
- Raktim Sen
- Loker Hydrocarbon Research Institute and Department of ChemistryUniversity of Southern CaliforniaUniversity ParkLos AngelesCA90089-1661USA
| | - Alain Goeppert
- Loker Hydrocarbon Research Institute and Department of ChemistryUniversity of Southern CaliforniaUniversity ParkLos AngelesCA90089-1661USA
| | - G. K. Surya Prakash
- Loker Hydrocarbon Research Institute and Department of ChemistryUniversity of Southern CaliforniaUniversity ParkLos AngelesCA90089-1661USA
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5
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Prakash SG, Sen R, Goeppert A. Homogeneous Hydrogenation of CO2 and CO to Methanol: The Renaissance of Low Temperature Catalysis in the Context of the Methanol Economy. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Surya G. Prakash
- University of Southern California Loker Hydrocarbon Research Institute 837 Bloom WalkUniversity Park 90089-1661 Los Angeles UNITED STATES
| | - Raktim Sen
- University of Southern California Loker Hydrocarbon Res. Inst., and Department box Chemistry UNITED STATES
| | - Alain Goeppert
- University of Southern California Loker Hydrocarbon Res. Inst., and Department of Chemistry UNITED STATES
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6
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Chatterjee R, Bhattacharjee S, Bhaumik A. Bifunctional Metal‐Free Heterogeneous Catalyst for the Synthesis of Methanol and Diols from CO2 and Epoxide. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rupak Chatterjee
- Indian Association for the Cultivation of Science School of Materials Sciences INDIA
| | - Sudip Bhattacharjee
- Indian Association for the Cultivation of Science School of Materials Sciences INDIA
| | - Asim Bhaumik
- Indian Association for the Cultivation of Science Department of Materials Science 2A & B Raja S. C. Mullick RoadJadavpur 700032 Kolkata INDIA
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7
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Singh T, Jalwal S, Chakraborty S. Homogeneous First‐row Transition Metal Catalyzed Carbon dioxide Hydrogenation to Formic acid/Formate, and Methanol. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tushar Singh
- IIT Jodhpur: Indian Institute of Technology Jodhpur Chemistry INDIA
| | - Sachin Jalwal
- IIT Jodhpur: Indian Institute of Technology Jodhpur Chemistry INDIA
| | - Subrata Chakraborty
- Indian Institute of Technology Jodhpur Chemistry Department of ChemistryNH62, Nagaur RoadKarwar 342037 Jodhpur INDIA
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8
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Li F, Long L, He YM, Li Z, Chen H, Fan QH. Manganese-Catalyzed Asymmetric Formal Hydroamination of Allylic Alcohols: A Remarkable Macrocyclic Ligand Effect. Angew Chem Int Ed Engl 2022; 61:e202202972. [PMID: 35438237 DOI: 10.1002/anie.202202972] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 12/23/2022]
Abstract
A unique family of chiral peraza N6 -macrocyclic ligands, which are conformationally rigid and have a tunable saddle-shaped cavity, is described. Utilizing their manganese(I) complexes, the first example of earth-abundant transition metal-catalyzed asymmetric formal anti-Markovnikov hydroamination of allylic alcohols was realized, providing a practical access to synthetically important chiral γ-amino alcohols in excellent yields and enantioselectivities (up to 99 % yield and 98 % ee). The single-crystal structure of a MnI complex indicates that the manganese atom coordinates with the chiral dialkylamine moiety in a bidentate fashion. Further DFT calculations revealed that five of the six nitrogen atoms in the ligand were engaged in multiple noncovalent interactions with Mn, an isopropanol molecule, and a β-amino ketone intermediate via coordination, hydrogen bonding, and/or CH⋅⋅⋅π interactions in the transition state, showing a remarkable role of the macrocyclic framework.
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Affiliation(s)
- Faju Li
- CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
| | - Linhong Long
- CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
| | - Yan-Mei He
- CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
| | - Zeyu Li
- CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
| | - Hui Chen
- CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
| | - Qing-Hua Fan
- CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
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9
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Liu C, Wang M, Xu Y, Li Y, Liu Q. Manganese-Catalyzed Asymmetric Hydrogenation of 3H-Indoles. Angew Chem Int Ed Engl 2022; 61:e202202814. [PMID: 35238455 DOI: 10.1002/anie.202202814] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 12/21/2022]
Abstract
The asymmetric hydrogenation (AH) of 3H-indoles represents an ideal approach to the synthesis of useful chiral indoline scaffolds. However, very few catalytic systems based on precious metals have been developed to realize this challenging reaction. Herein, we report a Mn-catalyzed AH of 3H-indoles with excellent yields and enantioselectivities. The kinetic resolution of racemic 3H-indoles by AH was also achieved with high s-factors to construct quaternary stereocenters. Many acid-sensitive functional groups, which cannot be tolerated when using a state-of-the-art ruthenium catalyst, were compatible with manganese catalysis. This new process expands the scope of this transformation and highlights the uniqueness of earth-abundant metal catalysis. The reaction could proceed with catalyst loadings at the parts per million (ppm) level with an exceptional turnover number of 72 350. This is the highest value yet reported for an earth-abundant metal-catalyzed AH reaction.
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Affiliation(s)
- Chenguang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Mingyang Wang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yihan Xu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yibiao Li
- School of Biotechnology and Health, Wuyi University, Jiangmen, Guangdong, 529090, China
| | - Qiang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing, 100084, China
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10
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Li F, Long L, He Y, Li Z, Chen H, Fan Q. Manganese‐Catalyzed Asymmetric Formal Hydroamination of Allylic Alcohols: A Remarkable Macrocyclic Ligand Effect. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Faju Li
- CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry, Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
| | - Linhong Long
- CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
| | - Yan‐Mei He
- CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry, Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
| | - Zeyu Li
- CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry, Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
| | - Hui Chen
- CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
| | - Qing‐Hua Fan
- CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry, Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
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11
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Liu C, Wang M, Xu Y, Li Y, Liu Q. Manganese‐Catalyzed Asymmetric Hydrogenation of 3H‐Indoles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Yihan Xu
- Tsinghua University Department of Chemistry CHINA
| | - Yibiao Li
- Wuyi University Department of Chemistry CHILE
| | - Qiang Liu
- Tsinghua University Department of Chemistry Tsinghuayuan 1 100084 Beijing CHINA
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12
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Alberti C, Rijono D, Wehrmeister M, Cheung E, Enthaler S. Depolymerization of Poly(1,2‐propylene carbonate) via Ring Closing Depolymerization and Methanolysis. ChemistrySelect 2022. [DOI: 10.1002/slct.202104004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Christoph Alberti
- Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
| | - Desiree Rijono
- Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
| | - Moritz Wehrmeister
- Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
| | - Even Cheung
- Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
| | - Stephan Enthaler
- Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
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13
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Gausas L, Donslund BS, Kristensen SK, Skrydstrup T. Evaluation of Manganese Catalysts for the Hydrogenative Deconstruction of Commercial and End-of-Life Polyurethane Samples. CHEMSUSCHEM 2022; 15:e202101705. [PMID: 34510781 DOI: 10.1002/cssc.202101705] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Polyurethane (PU) is a thermoset plastic that is found in everyday objects, such as mattresses and shoes, but also in more sophisticated materials, including windmills and airplanes, and as insulation materials in refrigerators and buildings. Because of extensive inter-cross linkages in PU, current recycling methods are somewhat lacking. In this work, the effective catalytic hydrogenation of PU materials is carried out by applying a catalyst based on the earth-abundant metal manganese, to give amine and polyol fractions, which represent the original monomeric composition. In particular, Mn-Ph MACHO is found to catalytically deconstruct flexible foam, molded foams, insulation, and end-of-life materials at 1 wt.% catalyst loading by applying a reaction temperature of 180 °C, 50 bar of H2 , and 0.9 wt.% of KOH in isopropyl alcohol. The protocol is showcased in the catalytic deconstruction of 2 g of mattress foam using only 0.13 wt.% catalyst, resulting in 90 % weight recovery and a turnover number of 905.
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Affiliation(s)
- Laurynas Gausas
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO) and, Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark
| | - Bjarke S Donslund
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO) and, Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark
| | - Steffan K Kristensen
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO) and, Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark
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14
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Zubar V, Haedler AT, Schütte M, Hashmi ASK, Schaub T. Hydrogenative Depolymerization of Polyurethanes Catalyzed by a Manganese Pincer Complex. CHEMSUSCHEM 2022; 15:e202101606. [PMID: 34342135 DOI: 10.1002/cssc.202101606] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Chemical recycling, in particular hydrogenative depolymerization, offers a promising way to utilize plastic waste. This report covers the manganese-catalyzed hydrogenation of polyurethane materials to the corresponding monomeric units. The key to success is a Mn pincer complex as a potent hydrogenation catalyst in combination with elevated temperatures (up to 200 °C) and appropriate solvents to ensure sufficient solubility of the polymers. A wide range of polyurethane samples of varying polyol and isocyanate compositions, some of which feature significant amounts of urea functionalities, are depolymerized, releasing polyetherols and diaminotoluene (TDA) in yields of up to 89 % and 76 %, respectively.
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Affiliation(s)
- Viktoriia Zubar
- Catalysis Research Laboratory (CaRLa), University of Heidelberg, Im Neuenheimer Feld 584, 69120, Heidelberg, Germany
| | | | - Markus Schütte
- BASF Polyurethanes GmbH, Elastogranstr. 60, 49448, Lemfoerde, Germany
| | - A Stephen K Hashmi
- Catalysis Research Laboratory (CaRLa), University of Heidelberg, Im Neuenheimer Feld 584, 69120, Heidelberg, Germany
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Thomas Schaub
- Catalysis Research Laboratory (CaRLa), University of Heidelberg, Im Neuenheimer Feld 584, 69120, Heidelberg, Germany
- BASF SE, Carl-Bosch-Straße 38, 67056, Ludwigshafen, Germany
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15
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Schendel RKA, Yang W, Uslamin EA, Pidko EA. Utilizing Design of Experiments Approach to Assess Kinetic Parameters for a Mn Homogeneous Hydrogenation Catalyst. ChemCatChem 2021; 13:4886-4896. [PMID: 35874043 PMCID: PMC9291086 DOI: 10.1002/cctc.202101140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/23/2021] [Indexed: 12/15/2022]
Abstract
Homogeneous hydrogenation catalysts based on metal complexes provide a diverse and highly tunable tool for the fine chemical industry. To fully unleash their potential, fast and effective methods for the evaluation of catalytic properties are needed. In turn, this requires changes in the experimental approaches to test and evaluate the performance of the catalytic processes. Design of experiment combined with statistical analysis can enable time‐ and resource‐efficient experimentation. In this work, we employ a set of different statistical models to obtain the detailed kinetic description of a highly active homogeneous Mn (I) ketone hydrogenation catalyst as a representative model system. The reaction kinetics were analyzed using a full second order polynomial regression model, two models with eliminated parameters and finally a model which implements “chemical logic”. The coefficients obtained are compared with the corresponding high‐quality kinetic parameters acquired using conventional kinetic experiments. We demonstrate that various kinetic effects can be well captured using different statistical models, providing important insights into the reaction kinetics and mechanism of a complex catalytic reaction.
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Affiliation(s)
- Robin K. A. Schendel
- Inorganic Systems Engineering Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft (The Netherlands
| | - Wenjun Yang
- Inorganic Systems Engineering Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft (The Netherlands
| | - Evgeny A. Uslamin
- Inorganic Systems Engineering Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft (The Netherlands
| | - Evgeny A. Pidko
- Inorganic Systems Engineering Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft (The Netherlands
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16
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Avasare VD. Ascendancy of Nitrogen Heterocycles in the Computationally Designed Mn(I)PNN Pincer Catalysts on the Hydrogenation of Carbon Dioxide to Methanol. Inorg Chem 2021; 61:1851-1868. [PMID: 34714058 DOI: 10.1021/acs.inorgchem.1c02689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The development of sustainable catalysts to get methanol from CO2 under milder conditions and without any additives is still considered an arduous task. In many instances, transition-metal-catalyzed carbon dioxide to formic acid formation is more facile than methanol formation. This article provides comprehensive density functional theoretic investigations of six new Mn(I)PNN complexes, which are designed to perform CO2 to methanol conversion under milder reaction conditions. All these six catalysts have similar structural features except at terminal nitrogen, -N (1), where adenine-inspired nitrogen heterocycles containing pyridine and pyrimidine moieties are attached to instill an electron withdrawing effect on the central metal and thus to facilitate dihydrogen polarization during the catalyst regeneration. All these computationally modeled Mn(I)PNN complexes demonstrate the promising catalytic activity to get methanol through cascade catalytic cycles at 298.15 K. The metal-ligand cooperative (MLC) as well as noncooperative (NC) pathways are investigated for each catalytic cycle. The NC pathway is the preferred pathway for formic acid and formaldehyde formation, whereas methanol formation proceeds through only the MLC pathway. Different nitrogen heterocycles attached to the -N (1) terminal manifested a considerable amount of impact on the Gibbs free energies, overall activation energies, and computed turnover frequencies (TOFs). Among all the catalysts, SPCAT02 provides excellent TOFs for HCO2H (500 151 h-1), HCHO (11 912 h-1), and CH3OH (2 372 400 h-1) formation at 50 °C. SPCAT04 is found to be a better catalyst for the selective formation of formic acid formation at room temperature than the rest of the catalysts. The computed TOF results are found reliable upon comparison with experimentally established catalysts. To establish the structure-activity relationship, the activation strain model and Fukui function calculations are performed on all the catalysts. Both these studies provide complementary results. The present study revealed a very important finding that a more electrophilic metal center could facilitate the CO2 hydrogenation reaction robustly. All computationally designed catalysts could be cheaper and better alternatives to convert CO2 to methanol under mild reaction conditions in an aqueous medium.
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Affiliation(s)
- Vidya D Avasare
- Department of Chemistry, Sir Parashurambhau College, Tilak Road, Pune, Maharashtra 411030, India
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17
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Zhou W, Neumann P, Al Batal M, Rominger F, Hashmi ASK, Schaub T. Depolymerization of Technical-Grade Polyamide 66 and Polyurethane Materials through Hydrogenation. CHEMSUSCHEM 2021; 14:4176-4180. [PMID: 33174664 DOI: 10.1002/cssc.202002465] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/10/2020] [Indexed: 05/21/2023]
Abstract
Chemical recycling provides a promising solution to utilize plastic waste. Here, a catalytic hydrogenative depolymerization of polyamide 66 (PA 66) and polyurethane (PU) was developed. The system employed Ru pincer complexes at high temperature (200 °C) in THF solution, and even technical-grade polymers could be hydrogenated with satisfactory yields under these conditions. A comparison of the system with some known heterogeneous catalysts as well as catalyst poisoning tests supported the homogeneity of the system. These results demonstrate the potential of chemical recycling to regain building blocks for polymers and will be interesting for the further development of polymer hydrogenation.
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Affiliation(s)
- Wei Zhou
- Catalysis Research Laboratory (CaRLa), University of Heidelberg, Im Neuenheimer Feld 584, 69120, Heidelberg, Germany
| | - Paul Neumann
- BASF SE, Carl-Bosch-Straße 38, 67056, Ludwigshafen, Germany
| | - Mona Al Batal
- BASF SE, Carl-Bosch-Straße 38, 67056, Ludwigshafen, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - A Stephen K Hashmi
- Catalysis Research Laboratory (CaRLa), University of Heidelberg, Im Neuenheimer Feld 584, 69120, Heidelberg, Germany
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Thomas Schaub
- Catalysis Research Laboratory (CaRLa), University of Heidelberg, Im Neuenheimer Feld 584, 69120, Heidelberg, Germany
- BASF SE, Carl-Bosch-Straße 38, 67056, Ludwigshafen, Germany
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18
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Affiliation(s)
- Amit Kumar
- School of Chemistry University of St. Andrews North Haugh St. Andrews KY169ST UK
| | - James Luk
- School of Chemistry University of St. Andrews North Haugh St. Andrews KY169ST UK
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19
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Wan X, Li M, Liao RZ. Ligand-assisted Hydride Transfer: A Pivotal Step for CO 2 Hydroboration Catalyzed by a Mononuclear Mn(I) PNP Complex. Chem Asian J 2021; 16:2529-2537. [PMID: 34278731 DOI: 10.1002/asia.202100582] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/14/2021] [Indexed: 11/09/2022]
Abstract
A mononuclear Mn(I) pincer complex [Mn(Ph2 PCH2 SiMe2 )2 NH(CO)2 Br] was disclosed to catalyze the pinacolborane (HBpin)-based CO2 hydroboration reaction. Density functional calculations were conducted to reveal the reaction mechanism. The calculations showed that the reaction mechanism could be divided into four stages: (1) the addition of HBpin to the unsaturated catalyst C1; (2) the reduction of CO2 to HCOOBpin; (3) the reduction of HCOOBpin to HCHO; (4) the reduction of HCHO to CH3 OBpin. The activation of HBpin is the ligand-assisted addition of HBpin to the unsaturated Mn(I)-N complex C1 generated by the elimination of HBr from the Mn(I) pincer catalyst. The sequential substrate reductions share a common mechanism, and every hydroboration commences with the nucleophilic attack of the Mn(I)-H to the electron-deficient carbon centers. The hydride transfer from Mn(I) to HCOOBpin was found to be the rate-limiting step for the whole catalytic reaction, with a total barrier of 27.0 kcal/mol, which fits well with the experimental observations at 90 °C. The reactivity trend of CO2 , HCOOBpin, HCHO, and CH3 OBpin was analyzed through both thermodynamic and kinetic analysis, in the following order, namely HCHO>CO2 >HCOOBpin≫CH3 OBpin. Importantly, the very high barrier for the reduction of CH3 OBpin to form CH4 reconciles with the fact that methane was not observed in this catalytic reaction.
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Affiliation(s)
- Xiang Wan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Man Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Rong-Zhen Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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20
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Ghosh P, Jacobi von Wangelin A. Manganese‐Catalyzed Hydroborations with Broad Scope. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103550] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pradip Ghosh
- Dept. of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
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21
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Ghosh P, Jacobi von Wangelin A. Manganese-Catalyzed Hydroborations with Broad Scope. Angew Chem Int Ed Engl 2021; 60:16035-16043. [PMID: 33894033 PMCID: PMC8362021 DOI: 10.1002/anie.202103550] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/22/2021] [Indexed: 12/29/2022]
Abstract
Reductive transformations of easily available oxidized matter are at the heart of synthetic manipulation and chemical valorization. The applications of catalytic hydrofunctionalization benefit from the use of liquid reducing agents and operationally facile setups. Metal‐catalyzed hydroborations provide a highly prolific platform for reductive valorizations of stable C=X electrophiles. Here, we report an especially facile, broad‐scope reduction of various functions including carbonyls, carboxylates, pyridines, carbodiimides, and carbonates under very mild conditions with the inexpensive pre‐catalyst Mn(hmds)2. The reaction could be successfully applied to depolymerizations.
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Affiliation(s)
- Pradip Ghosh
- Dept. of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146, Hamburg, Germany
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22
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Das UK, Kar S, Ben‐David Y, Diskin‐Posner Y, Milstein D. Manganese Catalyzed Hydrogenation of Azo (N=N) Bonds to Amines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100440] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Uttam Kumar Das
- Department of Molecular Chemistry and Materials Science Weizmann Institute of Science Rehovot 76100 Israel
| | - Sayan Kar
- Department of Molecular Chemistry and Materials Science Weizmann Institute of Science Rehovot 76100 Israel
| | - Yehoshoa Ben‐David
- Department of Molecular Chemistry and Materials Science Weizmann Institute of Science Rehovot 76100 Israel
| | - Yael Diskin‐Posner
- Department of Chemical Research Support Weizmann Institute of Science Rehovot 76100 Israel
| | - David Milstein
- Department of Molecular Chemistry and Materials Science Weizmann Institute of Science Rehovot 76100 Israel
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23
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Kuß DA, Hölscher M, Leitner W. Hydrogenation of CO
2
to Methanol with Mn‐PNP‐Pincer Complexes in the Presence of Lewis Acids: the Formate Resting State Unleashed. ChemCatChem 2021. [DOI: 10.1002/cctc.202100649] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- David A. Kuß
- Max-Planck-Institut für chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim a. d. Ruhr Germany
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
| | - Walter Leitner
- Max-Planck-Institut für chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim a. d. Ruhr Germany
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
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24
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Liu C, Wang M, Liu S, Wang Y, Peng Y, Lan Y, Liu Q. Manganese‐Catalyzed Asymmetric Hydrogenation of Quinolines Enabled by π–π Interaction**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013540] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Chenguang Liu
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Mingyang Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Shihan Liu
- Chongqing Key Laboratory of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
| | - Yujie Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Yong Peng
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Yu Lan
- Institute of Green Catalysis College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
- Chongqing Key Laboratory of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
| | - Qiang Liu
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
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25
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Liu C, Wang M, Liu S, Wang Y, Peng Y, Lan Y, Liu Q. Manganese‐Catalyzed Asymmetric Hydrogenation of Quinolines Enabled by π–π Interaction**. Angew Chem Int Ed Engl 2021; 60:5108-5113. [DOI: 10.1002/anie.202013540] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/19/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Chenguang Liu
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Mingyang Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Shihan Liu
- Chongqing Key Laboratory of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
| | - Yujie Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Yong Peng
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Yu Lan
- Institute of Green Catalysis College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
- Chongqing Key Laboratory of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
| | - Qiang Liu
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
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26
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Dahiya P, Gangwar MK, Sundararaju B. Well‐defined Cp*Co(III)‐catalyzed Hydrogenation of Carbonates and Polycarbonates. ChemCatChem 2020. [DOI: 10.1002/cctc.202001490] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Pardeep Dahiya
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 Uttar Pradesh India
| | - Manoj Kumar Gangwar
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 Uttar Pradesh India
| | - Basker Sundararaju
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208 016 Uttar Pradesh India
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27
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Rahaman SMW, Pandey DK, Rivada‐Wheelaghan O, Dubey A, Fayzullin RR, Khusnutdinova JR. Hydrogenation of Alkenes Catalyzed by a Non‐pincer Mn Complex. ChemCatChem 2020. [DOI: 10.1002/cctc.202001158] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- S. M. Wahidur Rahaman
- Coordination Chemistry and Catalysis Unit Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha Onna Okinawa 904-0495 Japan
| | - Dilip K. Pandey
- Coordination Chemistry and Catalysis Unit Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha Onna Okinawa 904-0495 Japan
| | - Orestes Rivada‐Wheelaghan
- Coordination Chemistry and Catalysis Unit Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha Onna Okinawa 904-0495 Japan
| | - Abhishek Dubey
- Coordination Chemistry and Catalysis Unit Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha Onna Okinawa 904-0495 Japan
| | - Robert R. Fayzullin
- Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center Russian Academy of Sciences 8 Arbuzov Street Kazan 420088 Russia
| | - Julia R. Khusnutdinova
- Coordination Chemistry and Catalysis Unit Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha Onna Okinawa 904-0495 Japan
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28
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Alberti C, Fedorenko E, Enthaler S. Hydrogenative Depolymerization of End-of-Life Polycarbonates by an Iron Pincer Complex. ChemistryOpen 2020; 9:818-821. [PMID: 32789104 PMCID: PMC7418100 DOI: 10.1002/open.202000161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/07/2020] [Indexed: 11/22/2022] Open
Abstract
Chemical recycling processes can contribute to a resource-efficient plastic economy. Herein, a procedure for the iron-catalyzed hydrogenation of the carbonate function of end-of-life polycarbonates under simultaneous depolymerization is presented. The use of a straightforward iron pincer complex leads to high rate of depolymerization of poly(bisphenol A carbonate) and poly(propylene carbonate) yielding the monomers bisphenol A and 1,2-propanediol, respectively, as products under mild reaction conditions. Furthermore, the iron complex was able to depolymerize polycarbonates containing goods and mixture of plastics containing polycarbonates.
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Affiliation(s)
- Christoph Alberti
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 6D-20146HamburgGermany
| | - Elena Fedorenko
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 6D-20146HamburgGermany
| | - Stephan Enthaler
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 6D-20146HamburgGermany
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29
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Abstract
A formal C-H carboxylation of unactivated arenes using CO2 in green solvents is described. The present strategy combines a sterically controlled Ir-catalyzed C-H borylation followed by a Cu-catalyzed carboxylation of the in situ generated organoboronates. The reaction is highly regioselective for the C-H carboxylation of 1,3-disubstituted and 1,2,3-trisubstituted benzenes, 1,2- or 1,4-symmetrically substituted benzenes, fluorinated benzenes and different heterocycles. The developed methodology was applied to the late-stage C-H carboxylation of commercial drugs and ligands.
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Affiliation(s)
- Ashot Gevorgyan
- Department of ChemistryUiT The Arctic University of Norway9037TromsøNorway
| | - Kathrin H. Hopmann
- Hylleraas Centre for Quantum Molecular SciencesDepartment of ChemistryUiT The Arctic University of Norway9037TromsøNorway
| | - Annette Bayer
- Department of ChemistryUiT The Arctic University of Norway9037TromsøNorway
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30
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Kaithal A, van Bonn P, Hölscher M, Leitner W. Manganese(I)-Catalyzed β-Methylation of Alcohols Using Methanol as C 1 Source. Angew Chem Int Ed Engl 2020; 59:215-220. [PMID: 31651071 PMCID: PMC6973237 DOI: 10.1002/anie.201909035] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/27/2019] [Indexed: 01/01/2023]
Abstract
Highly selective β-methylation of alcohols was achieved using an earth-abundant first row transition metal in the air stable molecular manganese complex [Mn(CO)2 Br[HN(C2 H4 Pi Pr2 )2 ]] 1 ([HN(C2 H4 Pi Pr2 )2 ]=MACHO-i Pr). The reaction requires only low loadings of 1 (0.5 mol %), methanolate as base and MeOH as methylation reagent as well as solvent. Various alcohols were β-methylated with very good selectivity (>99 %) and excellent yield (up to 94 %). Biomass derived aliphatic alcohols and diols were also selectively methylated on the β-position, opening a pathway to "biohybrid" molecules constructed entirely from non-fossil carbon. Mechanistic studies indicate that the reaction proceeds through a borrowing hydrogen pathway involving metal-ligand cooperation at the Mn-pincer complex. This transformation provides a convenient, economical, and environmentally benign pathway for the selective C-C bond formation with potential applications for the preparation of advanced biofuels, fine chemicals, and biologically active molecules.
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Affiliation(s)
- Akash Kaithal
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
| | - Pit van Bonn
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
| | - Walter Leitner
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
- Max-Planck-Institut für chemische EnergiekonversionStiftstraße 34–3645470Mülheim a.d. RuhrGermany
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31
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Passera A, Mezzetti A. Retracted: The Manganese(I)‐Catalyzed Asymmetric Transfer Hydrogenation of Ketones: Disclosing the Macrocylic Privilege. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912605] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Alessandro Passera
- Departement Chemie und Angewandte Biowissenschaften Eidgenössische Technische Hochschule (ETH) Zürich 8093 Zürich Switzerland
| | - Antonio Mezzetti
- Departement Chemie und Angewandte Biowissenschaften Eidgenössische Technische Hochschule (ETH) Zürich 8093 Zürich Switzerland
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32
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Retracted: The Manganese(I)‐Catalyzed Asymmetric Transfer Hydrogenation of Ketones: Disclosing the Macrocylic Privilege. Angew Chem Int Ed Engl 2019; 59:187-191. [DOI: 10.1002/anie.201912605] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/08/2019] [Indexed: 12/22/2022]
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33
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Kaithal A, Bonn P, Hölscher M, Leitner W. Manganese(I)‐Catalyzed β‐Methylation of Alcohols Using Methanol as C
1
Source. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Akash Kaithal
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
| | - Pit Bonn
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
| | - Walter Leitner
- Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringer Weg 2 52074 Aachen Germany
- Max-Planck-Institut für chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim a.d. Ruhr Germany
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34
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Szewczyk M, Magre M, Zubar V, Rueping M. Reduction of Cyclic and Linear Organic Carbonates Using a Readily Available Magnesium Catalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04086] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Marcin Szewczyk
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, North Rhine-Westphalia, Germany
| | - Marc Magre
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, North Rhine-Westphalia, Germany
| | - Viktoriia Zubar
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, North Rhine-Westphalia, Germany
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, North Rhine-Westphalia, Germany
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Makkah Province, Saudi Arabia
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35
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Wei D, Bruneau‐Voisine A, Dubois M, Bastin S, Sortais J. Manganese‐Catalyzed Transfer Hydrogenation of Aldimines. ChemCatChem 2019. [DOI: 10.1002/cctc.201900314] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Duo Wei
- Univ RennesCNRS, ISCR – UMR 6226 35000 Rennes France
- LCC-CNRS, CNRS, UPSUniversité de Toulouse Toulouse France
| | - Antoine Bruneau‐Voisine
- Univ RennesCNRS, ISCR – UMR 6226 35000 Rennes France
- LCC-CNRS, CNRS, UPSUniversité de Toulouse Toulouse France
| | - Maxime Dubois
- LCC-CNRS, CNRS, UPSUniversité de Toulouse Toulouse France
| | | | - Jean‐Baptiste Sortais
- LCC-CNRS, CNRS, UPSUniversité de Toulouse Toulouse France
- Institut Universitaire de France 1 rue Descartes 75231 Paris Cedex 05 France
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36
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Zhang L, Tang Y, Han Z, Ding K. Lutidine‐Based Chiral Pincer Manganese Catalysts for Enantioselective Hydrogenation of Ketones. Angew Chem Int Ed Engl 2019; 58:4973-4977. [DOI: 10.1002/anie.201814751] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Linli Zhang
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yitian Tang
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- School of Physical Science and TechnologyShanghaiTech University Shanghai 201210 China
| | - Zhaobin Han
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Kuiling Ding
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
- School of Physical Science and TechnologyShanghaiTech University Shanghai 201210 China
- Collaborative Innovation Center of Chemical Science and EngineeringNankai University Tianjin 300071 China
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37
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Zhang L, Tang Y, Han Z, Ding K. Lutidine‐Based Chiral Pincer Manganese Catalysts for Enantioselective Hydrogenation of Ketones. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814751] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Linli Zhang
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yitian Tang
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- School of Physical Science and TechnologyShanghaiTech University Shanghai 201210 China
| | - Zhaobin Han
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Kuiling Ding
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- University of Chinese Academy of Sciences Beijing 100049 China
- School of Physical Science and TechnologyShanghaiTech University Shanghai 201210 China
- Collaborative Innovation Center of Chemical Science and EngineeringNankai University Tianjin 300071 China
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38
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Lee WT, van Muyden AP, Bobbink FD, Huang Z, Dyson PJ. Indirect CO 2 Methanation: Hydrogenolysis of Cyclic Carbonates Catalyzed by Ru-Modified Zeolite Produces Methane and Diols. Angew Chem Int Ed Engl 2019; 58:557-560. [PMID: 30461148 DOI: 10.1002/anie.201811086] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Indexed: 12/22/2022]
Abstract
We report a ruthenium-modified zeolite which efficiently transforms propylene carbonate to propylene glycol and methane, under solvent-free conditions. The catalyst achieved high product selectivity and no significant ageing effect was observed after multiple cycles. The resulting liquid product (water-containing glycol) can be directly used as anti-freeze solution and the gas phase can directly be used as an energy carrier in the form of H2 -enriched methane. This process efficiently bridges energy storage and an important chemical synthesis under sustainable (CO2 consuming) conditions.
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Affiliation(s)
- Wei-Tse Lee
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Antoine P van Muyden
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Felix D Bobbink
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Zhangjun Huang
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Paul J Dyson
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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39
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Lee WT, van Muyden AP, Bobbink FD, Huang Z, Dyson PJ. Indirect CO2
Methanation: Hydrogenolysis of Cyclic Carbonates Catalyzed by Ru-Modified Zeolite Produces Methane and Diols. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811086] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wei-Tse Lee
- Institut des Sciences et Ingénieuries Chimique; École Polytechnique Fédérale de Lausanne (EPFL); 1015 Lausanne Switzerland
| | - Antoine P. van Muyden
- Institut des Sciences et Ingénieuries Chimique; École Polytechnique Fédérale de Lausanne (EPFL); 1015 Lausanne Switzerland
| | - Felix D. Bobbink
- Institut des Sciences et Ingénieuries Chimique; École Polytechnique Fédérale de Lausanne (EPFL); 1015 Lausanne Switzerland
| | - Zhangjun Huang
- Institut des Sciences et Ingénieuries Chimique; École Polytechnique Fédérale de Lausanne (EPFL); 1015 Lausanne Switzerland
| | - Paul J. Dyson
- Institut des Sciences et Ingénieuries Chimique; École Polytechnique Fédérale de Lausanne (EPFL); 1015 Lausanne Switzerland
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40
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Kaithal A, Hölscher M, Leitner W. Catalytic Hydrogenation of Cyclic Carbonates using Manganese Complexes. Angew Chem Int Ed Engl 2018; 57:13449-13453. [PMID: 30134081 PMCID: PMC6221167 DOI: 10.1002/anie.201808676] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Indexed: 01/06/2023]
Abstract
Catalytic hydrogenation of cyclic carbonates to diols and methanol was achieved using a molecular catalyst based on earth-abundant manganese. The complex [Mn(CO)2 (Br)[HN(C2 H4 Pi Pr2 )2 ] 1 comprising commercially available MACHO ligand is an effective pre-catalyst operating under relatively mild conditions (T=120 °C, p(H2 )=30-60 bar). Upon activation with NaOt Bu, the formation of coordinatively unsaturated complex [Mn(CO)2 [N(C2 H4 Pi Pr2 )2 )] 5 was spectroscopically verified, which confirmed a kinetically competent intermediate. With the pre-activated complex, turnover numbers up to 620 and 400 were achieved for the formation of the diol and methanol, respectively. Stoichiometric reactions under catalytically relevant conditions provide insight into the stepwise reduction form the CO2 level in carbonates to methanol as final product.
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Affiliation(s)
- Akash Kaithal
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
| | - Walter Leitner
- Institut für Technische und Makromolekulare ChemieRWTH Aachen UniversityWorringer Weg 252074AachenGermany
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim a.d. RuhrGermany
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41
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Kaithal A, Hölscher M, Leitner W. Catalytic Hydrogenation of Cyclic Carbonates using Manganese Complexes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808676] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Akash Kaithal
- Institut für Technische und Makromolekulare Chemie; RWTH Aachen University; Worringer Weg 2 52074 Aachen Germany
| | - Markus Hölscher
- Institut für Technische und Makromolekulare Chemie; RWTH Aachen University; Worringer Weg 2 52074 Aachen Germany
| | - Walter Leitner
- Institut für Technische und Makromolekulare Chemie; RWTH Aachen University; Worringer Weg 2 52074 Aachen Germany
- Max Planck Institute for Chemical Energy Conversion; Stiftstraße 34-36 45470 Mülheim a.d. Ruhr Germany
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42
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Zubar V, Lebedev Y, Azofra LM, Cavallo L, El-Sepelgy O, Rueping M. Hydrogenation of CO 2 -Derived Carbonates and Polycarbonates to Methanol and Diols by Metal-Ligand Cooperative Manganese Catalysis. Angew Chem Int Ed Engl 2018; 57:13439-13443. [PMID: 30102010 DOI: 10.1002/anie.201805630] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/26/2018] [Indexed: 11/10/2022]
Abstract
The first base-metal-catalysed hydrogenation of CO2 -derived carbonates to alcohols is presented. The reaction proceeds under mild conditions in the presence of a well-defined manganese complex with a loading as low as 0.25 mol %. The non-precious-metal homogenous catalytic system provides an indirect route for the conversion of CO2 into methanol with the co-production of value-added (vicinal) diols in yields of up to 99 %. Experimental and computational studies indicate a metal-ligand cooperative catalysis mechanism.
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Affiliation(s)
- Viktoriia Zubar
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Yury Lebedev
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Luis Miguel Azofra
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Luigi Cavallo
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Osama El-Sepelgy
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany.,KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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43
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Zubar V, Lebedev Y, Azofra LM, Cavallo L, El-Sepelgy O, Rueping M. Hydrogenation of CO2
-Derived Carbonates and Polycarbonates to Methanol and Diols by Metal-Ligand Cooperative Manganese Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805630] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Viktoriia Zubar
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Yury Lebedev
- KAUST Catalysis Center (KCC); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Luis Miguel Azofra
- KAUST Catalysis Center (KCC); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- KAUST Catalysis Center (KCC); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Osama El-Sepelgy
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Magnus Rueping
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- KAUST Catalysis Center (KCC); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
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44
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Das UK, Chakraborty S, Diskin-Posner Y, Milstein D. Direct Conversion of Alcohols into Alkenes by Dehydrogenative Coupling with Hydrazine/Hydrazone Catalyzed by Manganese. Angew Chem Int Ed Engl 2018; 57:13444-13448. [DOI: 10.1002/anie.201807881] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/02/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Uttam Kumar Das
- Department of Organic Chemistry; Weizmann Institute of Institution; Rehovot 76100 Israel
| | - Subrata Chakraborty
- Department of Organic Chemistry; Weizmann Institute of Institution; Rehovot 76100 Israel
| | - Yael Diskin-Posner
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - David Milstein
- Department of Organic Chemistry; Weizmann Institute of Institution; Rehovot 76100 Israel
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45
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Das UK, Chakraborty S, Diskin-Posner Y, Milstein D. Direct Conversion of Alcohols into Alkenes by Dehydrogenative Coupling with Hydrazine/Hydrazone Catalyzed by Manganese. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807881] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Uttam Kumar Das
- Department of Organic Chemistry; Weizmann Institute of Institution; Rehovot 76100 Israel
| | - Subrata Chakraborty
- Department of Organic Chemistry; Weizmann Institute of Institution; Rehovot 76100 Israel
| | - Yael Diskin-Posner
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - David Milstein
- Department of Organic Chemistry; Weizmann Institute of Institution; Rehovot 76100 Israel
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