1
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Zhao M, Xu W, Wu YD, Yang X, Wang J, Zhou JS. Cobalt-Catalyzed Enantioselective Reductive Arylation, Heteroarylation, and Alkenylation of Michael Acceptors via an Elementary Mechanism of 1,4-Addition. J Am Chem Soc 2024; 146:20477-20493. [PMID: 38982945 DOI: 10.1021/jacs.4c06735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Cobalt complexes with chiral quinox ligands effectively promote the enantioselective conjugate addition of enones using aryl, heteroaryl, and alkenyl halides and sulfonates. Additionally, a cobalt complex with a strongly donating diphosphine, BenzP*, successfully catalyzes the asymmetric reductive arylation and alkenylation of α,β-unsaturated amides. Both catalytic systems show broad scopes and tolerance of sensitive functional groups. Both reactions can be scaled up with low loadings of cobalt catalysts. Experimental results and density functional theory (DFT) calculations suggest a new mechanism of elementary 1,4-addition of aryl cobalt(I) complexes.
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Affiliation(s)
- Mengxin Zhao
- State Key Laboratory of Chemical Oncogenomics, Shenzhen Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, 2199 Lishui Road, Nanshan District, Shenzhen 518055, China
| | - Wenqiang Xu
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yun-Dong Wu
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Gaoke Innovation Center, Guangqiao Road, Guangming District, Shenzhen 518107, China
| | - Xiuying Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jianchun Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jianrong Steve Zhou
- State Key Laboratory of Chemical Oncogenomics, Shenzhen Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, 2199 Lishui Road, Nanshan District, Shenzhen 518055, China
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2
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Zhang L, Zhao M, Pu M, Ma Z, Zhou J, Chen C, Wu YD, Chi YR, Zhou JS. Nickel-Catalyzed Enantioselective Reductive Conjugate Arylation and Heteroarylation via an Elementary Mechanism of 1,4-Addition. J Am Chem Soc 2022; 144:20249-20257. [DOI: 10.1021/jacs.2c05678] [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)
- Luoqiang Zhang
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Room F312, 2199 Lishui Road, Nanshan District, Shenzhen 518055, China
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Mengxin Zhao
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Room F312, 2199 Lishui Road, Nanshan District, Shenzhen 518055, China
| | - Maoping Pu
- Shenzhen Bay Laboratory, Gaoke Innovation Center, Guangqiao Road,
Guangming District, Shenzhen 518107, China
| | - Zhaoming Ma
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Room F312, 2199 Lishui Road, Nanshan District, Shenzhen 518055, China
| | - Jingsong Zhou
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Caiyou Chen
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yun-Dong Wu
- Shenzhen Bay Laboratory, Gaoke Innovation Center, Guangqiao Road,
Guangming District, Shenzhen 518107, China
- Laboratory of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen Bay Laboratory, Shenzhen 518055, China
| | - Yonggui Robin Chi
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Jianrong Steve Zhou
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Room F312, 2199 Lishui Road, Nanshan District, Shenzhen 518055, China
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3
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Chen P, Wang ZY, Wang JX, Peng XS, Wong HNC. Remote C(sp 3)–H activation: palladium-catalyzed intermolecular arylation and alkynylation with organolithiums and terminal alkynes. Org Chem Front 2022. [DOI: 10.1039/d2qo00584k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 1,4-palladium shift is regarded as one of the solutions towards the challenging remote C(sp3)–H activation.
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Affiliation(s)
- Peng Chen
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Zhi-Yong Wang
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Jia-Xin Wang
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China
| | - Xiao-Shui Peng
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China
| | - Henry N. C. Wong
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Longgang District, Shenzhen, China
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4
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Catalyzed stereo-selective hydrogenation of ynamides to give enamines: Ethanol as a hydrogen donor. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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5
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Wahlers J, Maloney M, Salahi F, Rosales AR, Helquist P, Norrby PO, Wiest O. Stereoselectivity Predictions for the Pd-Catalyzed 1,4-Conjugate Addition Using Quantum-Guided Molecular Mechanics. J Org Chem 2021; 86:5660-5667. [PMID: 33769065 DOI: 10.1021/acs.joc.1c00136] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The conjugate addition of aryl boronic acids to enones is a powerful synthetic tool to introduce quaternary chiral centers, but the experimentally observed stereoselectivities vary widely, and the identification of suitable substrate-ligand combinations requires significant effort. We describe the development and application of a transition-state force field (TSFF) by the quantum-guided molecular mechanics (Q2MM) method that is validated using an automated screen of 9 ligands, 38 aryl boronic acids, and 22 enones, leading to a MUE of 1.8 kJ/mol and a R2 value of 0.877 over 82 examples. A detailed error analysis identified the structural origin for the deviations in the small group of outliers. The TSFF was then used to predict the stereoselectivity for 27 ligands and 59 enones. The vast majority of the virtual screening results are in line with the expected results. Selected results for 6-substituted pyrox ligands, which were not part of the training set, were followed up by density functional theory and experimental studies.
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Affiliation(s)
- Jessica Wahlers
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Michael Maloney
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Farbod Salahi
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Anthony R Rosales
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Paul Helquist
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Per-Ola Norrby
- Data Science and Modelling, Pharmaceutical Sciences, R&D, AstraZeneca Gothenburg, Pepparedsleden 1, SE-431 83 Mölndal, Sweden.,Department of Chemistry and Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Olaf Wiest
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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6
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Iron-Catalyzed Conjugate Addition of Aryl Iodides onto Activated Alkenes under Air in Water. Catalysts 2020. [DOI: 10.3390/catal10111320] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The combination of commercially available FeCl3·6H2O with a water-soluble cationic 2,2′-bipyridyl catalytic system was found to enable the direct conjugate addition of aryl iodides onto activated alkenes, such as an α,β-unsaturated ester and a ketone, in a weakly acidic aqueous solution. This operationally simple protocol was carried out at 80 °C under air atmosphere in a potassium acetate-buffered aqueous solution for 12 h in the presence of Zn dust as a reductant to provide the desired 1,4-adducts in good yields.
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7
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9-(Diphenylphosphino)anthracene-based phosphapalladacycle catalyzed conjugate addition of arylboronic acids to electron-deficient alkenes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152257] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Xiong W, Hu K, Lei Y, Zhen Q, Zhao Z, Shao Y, Li R, Zhang Y, Chen J. Palladium-Catalyzed Cascade Reactions of 2-(Cyanomethoxy)chalcones with Arylboronic Acids: Selective Synthesis of Emissive Benzofuro[2,3-c]pyridines. Org Lett 2019; 22:1239-1243. [DOI: 10.1021/acs.orglett.9b04185] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Wenzhang Xiong
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Kun Hu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Yunxiang Lei
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Qianqian Zhen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Zhiwei Zhao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Renhao Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, P. R. China
| | - Yetong Zhang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
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9
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Xiong Q, Chen H, Zhang T, Shan C, Bai R, Lan Y. On the Mechanism of Palladium‐Catalyzed Unsaturated Bond Transformations: A Review of Theoretical Studies. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900314] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qin Xiong
- School of Chemistry and Chemical Engineering Chongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 China
| | - Haohua Chen
- School of Chemistry and Chemical Engineering Chongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering Chongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering Chongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering Chongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 China
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 China
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10
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Zhang J, Shan C, Lv K, Zhu L, Li Y, Liu T, Lan Y. Mechanistic Insight into Palladium-Catalyzed Carbocyclization-Functionalization of Bisallene: A Computational Study. ChemCatChem 2019. [DOI: 10.1002/cctc.201801934] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jing Zhang
- Department of Chemistry and Chemical Engineering; Jining University; Qufu 273155 P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P. R. China
| | - Kang Lv
- Department of Chemistry and Chemical Engineering; Jining University; Qufu 273155 P. R. China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P. R. China
| | - Yuanyuan Li
- Cooperative Innovation Center of Lipid Resources and Children's Daily Chemicals; Chongqing University of Education; Chongqing 400030 P. R. China
| | - Tao Liu
- Department of Chemistry and Chemical Engineering; Jining University; Qufu 273155 P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P. R. China
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 P. R. China
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11
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Li JF, Zhao RF, Zhou FQ, She MY, Zhang J, Yin B, Zhang SY, Li JL. Exploring the necessity of an acidic additive for Pd(ii)-catalyzed exclusive C4-fluoroalkylation of 3-acetylindole: a detailed DFT study on the mechanism and regioselectivity. Org Chem Front 2019. [DOI: 10.1039/c8qo01338a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The regioselectivity of Pd(ii)-catalyzed exclusive C4-fluoroalkylation of 3-acetylindole arises from the transfer of electron density from the substrate to the catalyst.
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Affiliation(s)
- Jin-Feng Li
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Ru-Fang Zhao
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Fu-Qiang Zhou
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Meng-Yao She
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Jun Zhang
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Bing Yin
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Sheng-Yong Zhang
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Jian-Li Li
- MOE Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
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12
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Abstract
Protodepalladation is the redox-neutral conversion of a C-Pd(II) bond to a C-H bond promoted by a Brønsted acid. It can be viewed as the microscopic reserves of Pd(II)-mediated C-H cleavage. In the context of catalytic reaction development, protodepalladation offers a means of converting organopalladium(II) intermediates to organic products without a change in oxidation state at the metal center. Hence, when integrated into catalytic cycles, it can be a uniquely enabling elementary step. The goal of this Review is to provide an overview of protodepalladation, including exploration of different reactions types, discussion of literature examples, and analysis of mechanistic features. Our hope is that this review will stimulate other researchers in the field to pursue new applications of this underexploited step in catalysis.
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Affiliation(s)
- Miriam L. O’Duill
- School of Chemistry, NUI Galway, University Rd, Galway H91 TK33, Ireland
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Keary M. Engle
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
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13
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Ni Y, Song K, Shen K, Yang Z, Liu R, Lin S, Pan Q. Cationic Pd(II)/bipyridine-catalyzed conjugate addition of arylboronic acids to α,β-unsaturated carboxylic acids in aqueous media. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Jung H, Lee A, Kim J, Kim H, Baik MH. Regiodivergent Conjugate Addition Controlled by Rhodium(I) and Palladium(II) Catalysts: A Combined Computational and Experimental Study. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700628] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hoimin Jung
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 South Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Ansoo Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Jin Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Hyunwoo Kim
- Center for Nanomaterials and Chemical Reactions; Institute for Basic Science (IBS); Daejeon 34141 South Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 South Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
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15
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Liu R, Yang Z, Ni Y, Song K, Shen K, Lin S, Pan Q. Pd(II)/Bipyridine-Catalyzed Conjugate Addition of Arylboronic Acids to α,β-Unsaturated Carboxylic Acids. Synthesis of β-Quaternary Carbons Substituted Carboxylic Acids. J Org Chem 2017; 82:8023-8030. [PMID: 28699747 DOI: 10.1021/acs.joc.7b01248] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rui Liu
- State and Local
Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Key Laboratory
of Organic Synthesis of Jiangsu Province, Green Polymer and Catalysis
Technology Laboratory (GAPCT), College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Zhenyu Yang
- State and Local
Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Key Laboratory
of Organic Synthesis of Jiangsu Province, Green Polymer and Catalysis
Technology Laboratory (GAPCT), College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Yuxin Ni
- State and Local
Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Key Laboratory
of Organic Synthesis of Jiangsu Province, Green Polymer and Catalysis
Technology Laboratory (GAPCT), College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Kaixuan Song
- State and Local
Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Key Laboratory
of Organic Synthesis of Jiangsu Province, Green Polymer and Catalysis
Technology Laboratory (GAPCT), College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Kai Shen
- State and Local
Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Key Laboratory
of Organic Synthesis of Jiangsu Province, Green Polymer and Catalysis
Technology Laboratory (GAPCT), College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Shaohui Lin
- State and Local
Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Key Laboratory
of Organic Synthesis of Jiangsu Province, Green Polymer and Catalysis
Technology Laboratory (GAPCT), College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Qinmin Pan
- State and Local
Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Key Laboratory
of Organic Synthesis of Jiangsu Province, Green Polymer and Catalysis
Technology Laboratory (GAPCT), College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
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16
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Deb A, Hazra A, Peng Q, Paton RS, Maiti D. Detailed Mechanistic Studies on Palladium-Catalyzed Selective C–H Olefination with Aliphatic Alkenes: A Significant Influence of Proton Shuttling. J Am Chem Soc 2017; 139:763-775. [DOI: 10.1021/jacs.6b10309] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arghya Deb
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Avijit Hazra
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Qian Peng
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
- State
Key Laboratory of Elemento-Organic Chemistry,Nankai University, Tianjin 300071, People’s Republic of China
| | - Robert S. Paton
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Debabrata Maiti
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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17
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Ji J, Yang Z, Liu R, Ni Y, Lin S, Pan Q. Pd(II)/bipyridine catalyzed conjugate addition of arylboronic acids to α,β-unsaturated amides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Sperger T, Sanhueza IA, Kalvet I, Schoenebeck F. Computational Studies of Synthetically Relevant Homogeneous Organometallic Catalysis Involving Ni, Pd, Ir, and Rh: An Overview of Commonly Employed DFT Methods and Mechanistic Insights. Chem Rev 2015. [PMID: 26207572 DOI: 10.1021/acs.chemrev.5b00163] [Citation(s) in RCA: 410] [Impact Index Per Article: 45.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Theresa Sperger
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
| | - Italo A Sanhueza
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany.,Laboratory of Organic Chemistry, ETH Zürich , Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Indrek Kalvet
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
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19
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He Q, Xie F, Fu G, Quan M, Shen C, Yang G, Gridnev ID, Zhang W. Palladium-Catalyzed Asymmetric Addition of Arylboronic Acids to Nitrostyrenes. Org Lett 2015; 17:2250-3. [DOI: 10.1021/acs.orglett.5b00863] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Qun He
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Fang Xie
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Guanghong Fu
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Mao Quan
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Chaoren Shen
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Guoqiang Yang
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Ilya D. Gridnev
- Department
of Chemistry, Graduate School of Science, Tohoku University, Aramaki
3-6, Aoba-ku, Sendai 9808578, Japan
| | - Wanbin Zhang
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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20
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Xue YS, Cai YP, Chen ZX. Mechanism and stereoselectivity of the Rh(ii)-catalyzed cyclopropanation of diazooxindole: a density functional theory study. RSC Adv 2015. [DOI: 10.1039/c5ra07981k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
A density functional theory study was performed to understand the detailed mechanisms and stereoselectivity of the rhodium(ii)-catalyzed cyclopropanation reactions with diazooxindole and styrene.
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Affiliation(s)
- Yun-Sheng Xue
- Institute of Theoretical and Computational Chemistry
- Key Laboratory of Mesoscopic Chemistry of MOE
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Yu-Ping Cai
- Institute of Theoretical and Computational Chemistry
- Key Laboratory of Mesoscopic Chemistry of MOE
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Zhao-Xu Chen
- Institute of Theoretical and Computational Chemistry
- Key Laboratory of Mesoscopic Chemistry of MOE
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
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21
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Li YG, He G, Qin HL, Kantchev EAB. Transmetalation from B to Rh in the course of the catalytic asymmetric 1,4-addition reaction of phenylboronic acid to enones: a computational comparison of diphosphane and diene ligands. Dalton Trans 2015; 44:2737-46. [DOI: 10.1039/c4dt03147d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A DFT study on the transmetalation of PhB(OH)2 to diphosphane and diene Rh catalysts confirms the proposed intermediate and reactivity trends.
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Affiliation(s)
- You-Gui Li
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
| | - Gang He
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
| | - Hua-Li Qin
- School of Chemistry
- Chemical Engineering and Biological Science
- Wuhan University of Technology
- Wuhan
- China
| | - Eric Assen B. Kantchev
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
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22
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Quan M, Yang G, Xie F, Gridnev ID, Zhang W. Pd(ii)-catalyzed asymmetric addition of arylboronic acids to cyclic N-sulfonyl ketimine esters and a DFT study of its mechanism. Org Chem Front 2015. [DOI: 10.1039/c4qo00347k] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient palladium-catalyzed asymmetric arylation of cyclic ketimine esters is developed, which provides the desired product in up to 99% yield with up to 99% ee. The mechanism of enantioselection is studied using DFT calculation.
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Affiliation(s)
- Mao Quan
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Guoqiang Yang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Fang Xie
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Ilya D. Gridnev
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Aoba-ku
- Japan
| | - Wanbin Zhang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
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23
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Wong J, Gan K, Chen HJ, Pullarkat SA. Evaluation of Palladacycles as a Non-Rhodium Based Alternative for the Asymmetric Conjugate 1,4-Addition of Arylboronic Acids to α,β-Unsaturated Enones. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400473] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Dang Y, Qu S, Wang ZX, Wang X. A Computational Mechanistic Study of an Unprecedented Heck-Type Relay Reaction: Insight into the Origins of Regio- and Enantioselectivities. J Am Chem Soc 2014; 136:986-98. [DOI: 10.1021/ja410118m] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yanfeng Dang
- School
of Chemistry and Chemical Engineering, University of the Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Shuanglin Qu
- School
of Chemistry and Chemical Engineering, University of the Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zhi-Xiang Wang
- School
of Chemistry and Chemical Engineering, University of the Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, People’s Republic of China
| | - Xiaotai Wang
- Department
of Chemistry, University of Colorado, Denver, Campus Box 194, P.O. Box 173364, Denver, Colorado 80217-3364, United States
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25
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Zhang L, Xie X, Peng Z, Fu L, Zhang Z. Ru-catalyzed 1,4-addition of arylboronic acids to acrylic acid derivatives in the presence of phenols. Chem Commun (Camb) 2013; 49:8797-9. [PMID: 23961538 DOI: 10.1039/c3cc43095b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Ru(p-cymene)Cl2]2-catalyzed 1,4-addition reactions between arylboronic acids and butyl acrylate and acrylamide in the presence of phenols were investigated, good to excellent yields were obtained. The addition of phenols remarkably promoted the protonolysis and inhibited the β-H elimination of the 1,4-addition intermediates, and also efficiently suppressed the protonolysis of arylboronic acids.
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Affiliation(s)
- Lei Zhang
- School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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26
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Holder JC, Zou L, Marziale AN, Liu P, Lan Y, Gatti M, Kikushima K, Houk KN, Stoltz BM. Mechanism and enantioselectivity in palladium-catalyzed conjugate addition of arylboronic acids to β-substituted cyclic enones: insights from computation and experiment. J Am Chem Soc 2013; 135:14996-5007. [PMID: 24028424 DOI: 10.1021/ja401713g] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enantioselective conjugate additions of arylboronic acids to β-substituted cyclic enones have been previously reported from our laboratories. Air- and moisture-tolerant conditions were achieved with a catalyst derived in situ from palladium(II) trifluoroacetate and the chiral ligand (S)-t-BuPyOx. We now report a combined experimental and computational investigation on the mechanism, the nature of the active catalyst, the origins of the enantioselectivity, and the stereoelectronic effects of the ligand and the substrates of this transformation. Enantioselectivity is controlled primarily by steric repulsions between the t-Bu group of the chiral ligand and the α-methylene hydrogens of the enone substrate in the enantiodetermining carbopalladation step. Computations indicate that the reaction occurs via formation of a cationic arylpalladium(II) species, and subsequent carbopalladation of the enone olefin forms the key carbon-carbon bond. Studies of nonlinear effects and stoichiometric and catalytic reactions of isolated (PyOx)Pd(Ph)I complexes show that a monomeric arylpalladium-ligand complex is the active species in the selectivity-determining step. The addition of water and ammonium hexafluorophosphate synergistically increases the rate of the reaction, corroborating the hypothesis that a cationic palladium species is involved in the reaction pathway. These additives also allow the reaction to be performed at 40 °C and facilitate an expanded substrate scope.
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Affiliation(s)
- Jeffrey C Holder
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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27
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Gottumukkala AL, Suljagic J, Matcha K, de Vries JG, Minnaard AJ. Efficient formation of benzylic quaternary centers via palladium catalysis. CHEMSUSCHEM 2013; 6:1636-1639. [PMID: 23821532 DOI: 10.1002/cssc.201300276] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Indexed: 06/02/2023]
Abstract
Four's a crowd: An efficient protocol for the formation of benzylic quaternary centers via arylation of enones using a catalyst made from Pd(O2 CCF3 )2 and 2,2'-bipyridine is developed. For cyclic substrates, catalyst loadings as low as 1 mol % Pd are enough to afford excellent yields (>90%) using a variety of arylboronic acids. In case of acyclic substrates, the addition of KSbF6 was found to improve conversions and yields.
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Affiliation(s)
- Aditya L Gottumukkala
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747 AG, Groningen (The Netherlands)
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28
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Yang G, Zhang W. A Palladium-Catalyzed Enantioselective Addition of Arylboronic Acids to Cyclic Ketimines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302861] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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A Palladium-Catalyzed Enantioselective Addition of Arylboronic Acids to Cyclic Ketimines. Angew Chem Int Ed Engl 2013; 52:7540-4. [DOI: 10.1002/anie.201302861] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Indexed: 11/07/2022]
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30
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Walker SE, Boehnke J, Glen PE, Levey S, Patrick L, Jordan-Hore JA, Lee AL. Ligand- and base-free Pd(II)-catalyzed controlled switching between oxidative Heck and conjugate addition reactions. Org Lett 2013; 15:1886-9. [PMID: 23578003 DOI: 10.1021/ol400539h] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A simple change of solvent allows controlled and efficient switching between oxidative Heck and conjugate addition reactions on cyclic Michael acceptor substrates, catalyzed by a cationic Pd(II) catalyst system. Both reactions are ligand- and base-free and tolerant of air and moisture, and the controlled switching sheds light on some of the factors which favor one reaction over the other.
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Affiliation(s)
- Sarah E Walker
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS Scotland, United Kingdom
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31
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Kantchev EAB. Cooperativity between steric repulsion and crossed diene coordination governs the enantioselectivity in rhodium(i)/chiral, 1,4- and 1,5-diene-catalysed 1,4-addition reaction: a DFT study. Chem Sci 2013. [DOI: 10.1039/c3sc22100h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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32
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Zhang W, Zhu Y, Wei D, Li Y, Tang M. Theoretical investigations toward the [4 + 2] cycloaddition of ketenes with N-benzoyldiazenes catalyzed by N-heterocyclic carbenes: mechanism and enantioselectivity. J Org Chem 2012; 77:10729-37. [PMID: 23153290 DOI: 10.1021/jo302044n] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Density functional theory (DFT) calculations have been performed to provide the first detailed computational study on the mechanism and enantioselectivity for the [4 + 2] cycloaddition reaction of ketenes with N-benzoyldiazenes catalyzed by N-heterocyclic carbenes (NHCs). Two possible mechanisms have been studied: first is the "ketene-first" mechanism (mechanism A), and second is the novel "diazene-first" mechanism (mechanism B). The calculated results reveal that mechanism B is more favorable than mechanism A because it is not only of lower energy barrier but also more consistent with the provided general experimental procedure (Huang, X.-L.; He, L.; Shao, P.-L.; Ye, S. Angew. Chem., Int. Ed.2009, 48, 192-195). The enantioselectivity-determining step is demonstrated to present during the first process of cycloaddition, and the main product configuration is verified to agree with the experimental ee values very well. This study should be of some worth on forecasting how different substituent groups of catalysts and/or reactants affect the enantioselectivity of products. The obtained novel mechanistic insights should be valuable for not only rational design of more efficient NHC catalysts but also understanding the general reaction mechanism of [4 + 2] cycloaddition of ketenes.
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Affiliation(s)
- Wenjing Zhang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
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33
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Peng Q, Yan H, Zhang X, Wu YD. Conjugate Addition vs Heck Reaction: A Theoretical Study on Competitive Coupling Catalyzed by Isoelectronic Metal (Pd(II) and Rh(I)). J Org Chem 2012; 77:7487-96. [DOI: 10.1021/jo301319j] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qian Peng
- Shanghai-HongKong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Ling Ling Road, Shanghai, 200032, China
| | - Hong Yan
- Lab of Computational Chemistry
and Drug Design, Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055,
China
- State Key Laboratory
of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xinhao Zhang
- Lab of Computational Chemistry
and Drug Design, Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055,
China
| | - Yun-Dong Wu
- Shanghai-HongKong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Ling Ling Road, Shanghai, 200032, China
- Lab of Computational Chemistry
and Drug Design, Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055,
China
- Department of Chemistry, The Hong Kong University of Science & Technology, Kowloon, Hong Kong, China
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34
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Wang H, Li Y, Zhang R, Jin K, Zhao D, Duan C. Palladium-Catalyzed Desulfitative Conjugate Addition of Aryl Sulfinic Acids and Direct ESI-MS for Mechanistic Studies. J Org Chem 2012; 77:4849-53. [DOI: 10.1021/jo300654s] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Huifeng Wang
- State Key Laboratory of Fine Chemicals,
School of Chemical
Engineering, Dalian University of Technology, Dalian, 116012, China
| | - Yaming Li
- State Key Laboratory of Fine Chemicals,
School of Chemical
Engineering, Dalian University of Technology, Dalian, 116012, China
| | - Rong Zhang
- State Key Laboratory of Fine Chemicals,
School of Chemical
Engineering, Dalian University of Technology, Dalian, 116012, China
| | - Kun Jin
- State Key Laboratory of Fine Chemicals,
School of Chemical
Engineering, Dalian University of Technology, Dalian, 116012, China
| | - Defeng Zhao
- State Key Laboratory of Fine Chemicals,
School of Chemical
Engineering, Dalian University of Technology, Dalian, 116012, China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals,
School of Chemical
Engineering, Dalian University of Technology, Dalian, 116012, China
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35
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Gottumukkala AL, Matcha K, Lutz M, de Vries JG, Minnaard AJ. Palladium-Catalyzed Asymmetric Quaternary Stereocenter Formation. Chemistry 2012; 18:6907-14. [DOI: 10.1002/chem.201200694] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Indexed: 11/07/2022]
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36
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Noda D, Sunada Y, Hatakeyama T, Nakamura M, Nagashima H. Iron promoted conjugate addition: implication of the six-centered mechanism based on the isolation of the iron-enolate intermediate. Chem Commun (Camb) 2012; 48:12231-3. [DOI: 10.1039/c2cc37144h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Lan Y, Liu P, Newman SG, Lautens M, Houk KN. Theoretical study of Pd(0)-catalyzed carbohalogenation of alkenes: mechanism and origins of reactivities and selectivities in alkyl halide reductive elimination from Pd(ii) species. Chem Sci 2012. [DOI: 10.1039/c2sc20103h] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Luo Y, Berry NG, Carnell AJ. Chiral bicyclic [2.2.2] octadiene ligands for Rh-catalysed catalytic asymmetric conjugate additions to acyclic enones: a quantitative structure–property relationship. Chem Commun (Camb) 2012; 48:3279-81. [DOI: 10.1039/c2cc17120a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Gosiewska S, Raskatov JA, Shintani R, Hayashi T, Brown JM. The Origins of Enantioselectivity in Rh-Diene Complex Catalysed Arylation of Cyclohex-2-enones. Chemistry 2011; 18:80-4. [DOI: 10.1002/chem.201102421] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 08/04/2011] [Indexed: 11/12/2022]
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40
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Tomás-Mendivil E, Díez J, Cadierno V. Conjugate addition of arylboronic acids to α,β-unsaturated carbonyl compounds in aqueous medium using Pd(ii) complexes with dihydroxy-2,2′-bipyridine ligands: homogeneous or heterogeneous nano-catalysis? Catal Sci Technol 2011. [DOI: 10.1039/c1cy00214g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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