1
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Heterogeneous catalytic materials for carboxylation reactions with CO2 as reactant. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102250] [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]
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2
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Wang X, Yang Y, Zhao Y, Wang S, Hu W, Li J, Wang Z, Yang F, Zhao J. Ynamide-Mediated Intermolecular Esterification. J Org Chem 2020; 85:6188-6194. [PMID: 32227863 DOI: 10.1021/acs.joc.0c00485] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An ynamide-mediated one-pot, two-step intermolecular esterification via the condensation of carboxylic acids with nucleophilic hydroxyl species was reported. A broad substrate scope with respect to carboxylic acids, alcohols, and phenols was observed. The α-acyloxyenamide intermediates formed by the addition of carboxylic acids to ynamides proved to be effective acylating reagents for the esterification of alcohol and phenol derivatives with the assistance of base catalysis. Notably, the racemization of the α-chiral center of carboxylic acids can be avoided.
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Affiliation(s)
- Xuewei Wang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yang Yang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yongli Zhao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Sheng Wang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Wenchang Hu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Jinmei Li
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Zihao Wang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Fengling Yang
- College of Sciences and Life Engineering, Henan University of Urban Construction, Pingdingshan, Henan 467036, P. R. China
| | - Junfeng Zhao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
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3
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Papastavrou AT, Pauze M, Gómez‐Bengoa E, Vougioukalakis GC. Unprecedented Multicomponent Organocatalytic Synthesis of Propargylic Esters via CO
2
Activation. ChemCatChem 2019. [DOI: 10.1002/cctc.201900207] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Argyro T. Papastavrou
- Laboratory of Organic Chemistry, Department of ChemistryNational and Kapodistrian University of Athens Athens GR-15771 Greece
| | - Martin Pauze
- Department of Organic Chemistry I, Faculty of ChemistryUniversity of the Basque Country UPV-EHU 20018 Donostia-San Sebastian Spain
| | - Enrique Gómez‐Bengoa
- Department of Organic Chemistry I, Faculty of ChemistryUniversity of the Basque Country UPV-EHU 20018 Donostia-San Sebastian Spain
| | - Georgios C. Vougioukalakis
- Laboratory of Organic Chemistry, Department of ChemistryNational and Kapodistrian University of Athens Athens GR-15771 Greece
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4
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Peppel T, Spannenberg A. 3,3′-Dimethyl-1,1′-methylenediimidazolium tetrabromidocobaltate(II). IUCRDATA 2018. [DOI: 10.1107/s2414314618012129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
The title compound, (C9H14N4)[CoBr4], was obtained as single crystals directly in very low yield as a side product in the reaction of 1,1′-bis(1-methylimidazolium)acetate bromide and CoBr2. The title compound consists of an imidazolium-based dication and a tetrabromidocobaltate(II) complex anion, which are connected via C—H...Br interactions in the crystal. The dihedral angle between the imidazolium rings in the cation is 72.89 (16)°. The CoII ion in the anion is coordinated tetrahedrally by four bromide ligands [Co—Br = 2.4025 (5)–2.4091 (5) Å and Br—Co—Br = 106.224 (17)–113.893 (17)°]. The compound exhibits a high melting point (>300°C) and is a light-blue solid under ambient conditions.
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5
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Zhu F, Wu XF. Selectivity Controlled Palladium-Catalyzed Carbonylative Synthesis of Propiolates and Chromenones from Phenols and Alkynes. Org Lett 2018; 20:3422-3425. [PMID: 29790761 DOI: 10.1021/acs.orglett.8b01368] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An interesting selectivity-controlled palladium-catalyzed oxidative carbonylation procedure for the synthesis of propiolates and chromenones has been developed. Starting from phenols and alkynes, under slightly different conditions, various propiolates and chromenones can be isolated in moderate to good yields. Additionally, this also presents the first example of direct carbonylative annulation of nonpreactivated phenols and terminal alkynes to produce chromenones.
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Affiliation(s)
- Fengxiang Zhu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock , Albert-Einstein-Str. 29a , Rostock , 18059 , Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock , Albert-Einstein-Str. 29a , Rostock , 18059 , Germany
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6
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Zeng L, Li H, Tang S, Gao X, Deng Y, Zhang G, Pao CW, Chen JL, Lee JF, Lei A. Cobalt-Catalyzed Electrochemical Oxidative C–H/N–H Carbonylation with Hydrogen Evolution. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00683] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Li Zeng
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Haoran Li
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Shan Tang
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xinlong Gao
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yi Deng
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Guoting Zhang
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Jeng-Lung Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Aiwen Lei
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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7
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Yang J, Liu J, Jackstell R, Beller M. Palladium-catalyzed aerobic oxidative carbonylation of alkynes with amines: a general access to substituted maleimides. Chem Commun (Camb) 2018; 54:10710-10713. [DOI: 10.1039/c8cc05802d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A catalytic oxidative carbonylation reaction was developed for the synthesis of polysubstituted maleimides from alkynes and amines with air as a green oxidant.
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Affiliation(s)
- Ji Yang
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock
- Germany
| | - Jiawang Liu
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock
- Germany
| | - Ralf Jackstell
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock
- Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock
- Germany
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8
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Chai H, Cao Q, Dornan LM, Hughes NL, Brown CL, Nockemann P, Li J, Muldoon MJ. Cationic Palladium(II) Complexes for Catalytic Wacker‐Type Oxidation of Styrenes to Ketones Using O
2
as the Sole Oxidant. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700931] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hongxin Chai
- School of Chemistry and Chemical Engineering Queen's University of Belfast Stranmillis Road BT9 5AG Belfast, David Keir Building Northern Ireland
- School of Chemical Engineering and Environment Beijing Institute of Technology 100081 Beijing China
| | - Qun Cao
- School of Chemistry and Chemical Engineering Queen's University of Belfast Stranmillis Road BT9 5AG Belfast, David Keir Building Northern Ireland
| | - Laura M. Dornan
- School of Chemistry and Chemical Engineering Queen's University of Belfast Stranmillis Road BT9 5AG Belfast, David Keir Building Northern Ireland
| | - N. Louise Hughes
- School of Chemistry and Chemical Engineering Queen's University of Belfast Stranmillis Road BT9 5AG Belfast, David Keir Building Northern Ireland
| | - Clare L. Brown
- School of Chemistry and Chemical Engineering Queen's University of Belfast Stranmillis Road BT9 5AG Belfast, David Keir Building Northern Ireland
| | - Peter Nockemann
- School of Chemistry and Chemical Engineering Queen's University of Belfast Stranmillis Road BT9 5AG Belfast, David Keir Building Northern Ireland
| | - Jiarong Li
- School of Chemical Engineering and Environment Beijing Institute of Technology 100081 Beijing China
| | - Mark J. Muldoon
- School of Chemistry and Chemical Engineering Queen's University of Belfast Stranmillis Road BT9 5AG Belfast, David Keir Building Northern Ireland
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9
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Wang D, Weinstein AB, White PB, Stahl SS. Ligand-Promoted Palladium-Catalyzed Aerobic Oxidation Reactions. Chem Rev 2017; 118:2636-2679. [PMID: 28975795 DOI: 10.1021/acs.chemrev.7b00334] [Citation(s) in RCA: 378] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Palladium-catalyzed aerobic oxidation reactions have been the focus of industrial application and extensive research efforts for nearly 60 years. A significant transition occurred in this field approximately 20 years ago, with the introduction of catalysts supported by ancillary ligands. The ligands play crucial roles in the reactions, including promotion of direct oxidation of palladium(0) by O2, bypassing the typical requirement for Cu salts or related redox cocatalysts to facilitate oxidation of the reduced Pd catalyst; facilitation of key bond-breaking and bond-forming steps during substrate oxidation; and modulation of chemo-, regio-, or stereoselectivity of a reaction. The use of ligands has contributed to significant expansion of the scope of accessible aerobic oxidation reactions. Increased understanding of the role of ancillary ligands should promote the development of new synthetic transformations, enable improved control over the reaction selectivity, and improve catalyst activity and stability. This review surveys the different ligands that have been used to support palladium-catalyzed aerobic oxidation reactions and, where possible, describes mechanistic insights into the role played by the ancillary ligand.
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Affiliation(s)
- Dian Wang
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Adam B Weinstein
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Paul B White
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Shannon S Stahl
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
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10
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Chen Y, Hone CA, Gutmann B, Kappe CO. Continuous Flow Synthesis of Carbonylated Heterocycles via Pd-Catalyzed Oxidative Carbonylation Using CO and O2 at Elevated Temperatures and Pressures. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00217] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yuesu Chen
- Institute
of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - Christopher A. Hone
- Institute
of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
- Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
| | - Bernhard Gutmann
- Institute
of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
- Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
| | - C. Oliver Kappe
- Institute
of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
- Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
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11
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Hughes NL, Brown CL, Irwin AA, Cao Q, Muldoon MJ. Palladium(II)-Catalysed Aminocarbonylation of Terminal Alkynes for the Synthesis of 2-Ynamides: Addressing the Challenges of Solvents and Gas Mixtures. CHEMSUSCHEM 2017; 10:675-680. [PMID: 27906507 PMCID: PMC5347853 DOI: 10.1002/cssc.201601601] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Indexed: 06/06/2023]
Abstract
2-Ynamides can be synthesised through PdII catalysed oxidative carbonylation, utilising low catalyst loadings. A variety of alkynes and amines can be used to afford 2-ynamides in high yields, whilst overcoming the drawbacks associated with previous oxidative methods, which rely on dangerous solvents and gas mixtures. The use of [NBu4 ]I allows the utilisation of the industrially recommended solvent ethyl acetate. O2 can be used as the terminal oxidant, and the catalyst can operate under safer conditions with low O2 concentrations.
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Affiliation(s)
- N. Louise Hughes
- School of Chemistry and Chemical EngineeringQueen's University of BelfastStranmillis RoadBelfast, David Keir BuildingBT9 5AGNorthern Ireland
| | - Clare L. Brown
- School of Chemistry and Chemical EngineeringQueen's University of BelfastStranmillis RoadBelfast, David Keir BuildingBT9 5AGNorthern Ireland
| | - Andrew A. Irwin
- School of Chemistry and Chemical EngineeringQueen's University of BelfastStranmillis RoadBelfast, David Keir BuildingBT9 5AGNorthern Ireland
| | - Qun Cao
- School of Chemistry and Chemical EngineeringQueen's University of BelfastStranmillis RoadBelfast, David Keir BuildingBT9 5AGNorthern Ireland
| | - Mark J. Muldoon
- School of Chemistry and Chemical EngineeringQueen's University of BelfastStranmillis RoadBelfast, David Keir BuildingBT9 5AGNorthern Ireland
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12
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Guo FJ, Zhang ZZ, Wang JY, Sun J, Fang XC, Zhou MD. Silver-catalyzed one-pot synthesis of benzyl 2-alkynoates under ambient pressure of CO2 and ligand-free conditions. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.12.075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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