1
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Li Z, Zhao J, Xue W, Tang J, Li S, Ge Y, Xu J, Zheng X, Li R, Chen H, Fu H. Efficient and selective external activator-free cobalt catalyst for hydroboration of terminal alkynes enabled by BiPyPhos. Org Biomol Chem 2024; 22:4455-4460. [PMID: 38764306 DOI: 10.1039/d4ob00435c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
Herein, a robust catalyst system, composed of a bipyridine-based diphosphine ligand (BiPyPhos) and a cobalt precursor Co(acac)2, is successfully developed and applied in the hydroboration of terminal alkynes, exclusively affording various versatile β-E-vinylboronates in high yields at room temperature.
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Affiliation(s)
- Zheng Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Jiangui Zhao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Weichao Xue
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Juan Tang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Shun Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Yicen Ge
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Jiaqi Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Xueli Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Ruixiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
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2
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Phang YL, Jin JK, Zhang FL, Wang YF. Radical hydroboration for the synthesis of organoboron compounds. Chem Commun (Camb) 2024; 60:4275-4289. [PMID: 38566567 DOI: 10.1039/d4cc00398e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Organoboron compounds demonstrate diverse applications in the fields of organic synthesis, materials science, and medicinal chemistry. Compared to the conventional hydroboration reaction, radical hydroboration serves as an alternative approach for the synthesis of organoborons via different mechanisms. In radical hydroboration, a boryl radical is initially generated from homolytic cleavage of a B-H or a B-B bond, which is then added to an unsaturated double bond to deliver a carbon radical. Subsequent hydrogen atom transfer or reduction of the carbon radical to form a carbanion followed by protonation gave the final product. Over the past few years, numerous efforts have been made for efficient synthesis of boryl radicals and the expansion of substrate scope of the radical hydroboration reaction. Here, we discuss the recent advancement of radical hydroboration and its associated mechanisms. Numerous radical hydroboration strategies employing N-heterocyclic carbene borane, bis(pinacolato)diboron and pinacolborane as the boron source were illustrated. Thermochemical, photochemical and electrochemical strategies for the generation of boryl radicals were also discussed in detail.
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Affiliation(s)
- Yee Lin Phang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Ji-Kang Jin
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Feng-Lian Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Yi-Feng Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
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3
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Zhang G, Zeng H, Zadori N, Marino C, Zheng S, Neary MC. Homoleptic octahedral Co II complexes as precatalysts for regioselective hydroboration of alkenes with high turnover frequencies. RSC Adv 2023; 13:28089-28096. [PMID: 37746341 PMCID: PMC10517108 DOI: 10.1039/d3ra06113b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 09/15/2023] [Indexed: 09/26/2023] Open
Abstract
Homoleptic complexes adopting octahedral coordination modes are usually less active in catalysis due to the saturated coordination around metal centers that prevents substrate activation in a catalytic event. In this work, we demonstrated that a homoleptic octahedral cobalt complex (1) of 4'-pyridyl-2,2';6',2''-terpyridine that experienced monoprotonation at the non-coordinating pyridyl moiety upon crystallization could serve as a highly efficient precatalyst for the hydroboration of styrene derivatives with Markovnikov selectivity. The solid-state structure of this precatalyst along with relevant homoleptic CoII and FeII complexes has been characterized by X-ray crystallography. In the solid state, 1 features one-dimensional hydrogen-bonded chains that are further stacked by interchain π⋯π interactions. The newly synthesized complexes (1-3) along with several known analogues (4-6) were examined as precatalysts for the hydroboration of alkenes. The best-performing system, 1/KOtBu was found to promote Markovnikov hydroboration of substituted styrenes with high turnover frequencies (TOFs) up to ∼47 000 h-1, comparable to the most efficient polymeric catalyst [Co(pytpy)Cl2]n reported to date. Although some limitations in substrate scope as well as functional group tolerance exist, the catalyst shows good promise for several relevant hydrofunctionaliation reactions.
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Affiliation(s)
- Guoqi Zhang
- Department of Sciences, John Jay College and PhD Program in Chemistry, The Graduate Center of the City University of New York New York 10019 NY USA
| | - Haisu Zeng
- Department of Sciences, John Jay College and PhD Program in Chemistry, The Graduate Center of the City University of New York New York 10019 NY USA
- Department of Chemistry, Hunter College, The City University of New York New York 10065 NY USA
| | - Nora Zadori
- Department of Sciences, John Jay College and PhD Program in Chemistry, The Graduate Center of the City University of New York New York 10019 NY USA
| | - Camila Marino
- Department of Sciences, John Jay College and PhD Program in Chemistry, The Graduate Center of the City University of New York New York 10019 NY USA
| | - Shengping Zheng
- Department of Chemistry, Hunter College, The City University of New York New York 10065 NY USA
| | - Michelle C Neary
- Department of Chemistry, Hunter College, The City University of New York New York 10065 NY USA
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4
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Gutiérrez L, Martin-Diaconescu V, Casadevall C, Oropeza F, de la Peña O’Shea VA, Meng J, Ortuño MA, Lloret-Fillol J. Low Oxidation State Cobalt Center Stabilized by a Covalent Organic Framework to Promote Hydroboration of Olefins. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- Luis Gutiérrez
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Organica i Analítica, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Vlad Martin-Diaconescu
- ALBA Synchrotron Light Source, Carretera BP 1413, Km. 3.3, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW Cambridge, U.K
| | - Freddy Oropeza
- Photoactivated Processes Unit, IMDEA Energy, 28935 Móstoles, Spain
| | | | - JingJing Meng
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Manuel A. Ortuño
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010 Barcelona, Spain
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5
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Newar R, Begum W, Akhtar N, Antil N, Chauhan M, Kumar A, Gupta P, Malik J, Kumar B, Manna K. Mono‐Phosphine Metal‐Organic Framework‐Supported Cobalt Catalyst for Efficient Borylation Reactions. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101019] [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)
- Rajashree Newar
- Indian Institute of Technology Delhi Chemistry HAUZ KHASNew Delhi 110016 New Delhi INDIA
| | - Wahida Begum
- Indian Institute of Technology Delhi Chemistry Hauz KhasNew Delhi 110016 New Delhi INDIA
| | - Naved Akhtar
- Indian Institute of Technology Delhi Chemistry HAUZ KHASNew Delhi 110016 New Delhi INDIA
| | - Neha Antil
- Indian Institute of Technology Delhi Chemistry HAUZ KHASNew Delhi 110016 New Delhi INDIA
| | - Manav Chauhan
- Indian Institute of Technology Delhi Chemistry Hauz KhasIIT DELHI, HAUZ KHAS 110016 New Delhi INDIA
| | - Ajay Kumar
- Indian Institute of Technology Delhi Chemistry HAUZ KHASNew Delhi 110016 New Delhi INDIA
| | - Poorvi Gupta
- Indian Institute of Technology Delhi Chemistry HAUZ KHAS 110016 New Delhi INDIA
| | - Jaideep Malik
- Indian Institute of Technology Roorkee Chemistry Roorkee 247667 Roorkee INDIA
| | - Balendra Kumar
- Sri Venkateswara College Chemistry University of Delhi 110021 New Delhi INDIA
| | - Kuntal Manna
- Indian Institute of Technology Delhi Department of Chemistry CHEMISTRY IIT DELHI, HAUZ KHAS 110016 New Delhi INDIA
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6
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Kumar GS, Moorthy S, Karmakar H, Singh SK, Panda TK. Neosilyllithium‐Catalyzed Hydroboration of Alkynes and Alkenes in the Presence of Pinacolborane (HBpin). Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100895] [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)
- Gobbilla Sai Kumar
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Shruti Moorthy
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Himadri Karmakar
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Saurabh Kumar Singh
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi-502 285 Sangareddy, Telangana India
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7
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Geier SJ, Vogels CM, Melanson JA, Westcott SA. The transition metal-catalysed hydroboration reaction. Chem Soc Rev 2022; 51:8877-8922. [DOI: 10.1039/d2cs00344a] [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
This review covers the development of the transition metal-catalysed hydroboration reaction, from its beginnings in the 1980s to more recent developments including earth-abundant catalysts and an ever-expanding array of substrates.
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Affiliation(s)
- Stephen J. Geier
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Jennifer A. Melanson
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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8
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Bose SK, Mao L, Kuehn L, Radius U, Nekvinda J, Santos WL, Westcott SA, Steel PG, Marder TB. First-Row d-Block Element-Catalyzed Carbon-Boron Bond Formation and Related Processes. Chem Rev 2021; 121:13238-13341. [PMID: 34618418 DOI: 10.1021/acs.chemrev.1c00255] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Organoboron reagents represent a unique class of compounds because of their utility in modern synthetic organic chemistry, often affording unprecedented reactivity. The transformation of the carbon-boron bond into a carbon-X (X = C, N, and O) bond in a stereocontrolled fashion has become invaluable in medicinal chemistry, agrochemistry, and natural products chemistry as well as materials science. Over the past decade, first-row d-block transition metals have become increasingly widely used as catalysts for the formation of a carbon-boron bond, a transformation traditionally catalyzed by expensive precious metals. This recent focus on alternative transition metals has enabled growth in fundamental methods in organoboron chemistry. This review surveys the current state-of-the-art in the use of first-row d-block element-based catalysts for the formation of carbon-boron bonds.
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Affiliation(s)
- Shubhankar Kumar Bose
- Centre for Nano and Material Sciences (CNMS), Jain University, Jain Global Campus, Bangalore-562112, India
| | - Lujia Mao
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical Herbs, School of Pharmacy, Hainan Medical University, 571199 Haikou, Hainan, P. R. China
| | - Laura Kuehn
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Jan Nekvinda
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Stephen A Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Patrick G Steel
- Department of Chemistry, University of Durham, Science Laboratories South Road, Durham DH1 3LE, U.K
| | - Todd B Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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9
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Zhang B, Xu X, Tao L, Lin Z, Zhao W. Rhodium-Catalyzed Regiodivergent Synthesis of Alkylboronates via Deoxygenative Hydroboration of Aryl Ketones: Mechanism and Origin of Selectivities. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02685] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Bing Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Xin Xu
- Department of Chemistry, The Hong Kong University of Science and Technology, 999077 Clear Water Bay, Kowloon 999077, Hong Kong, P. R. China
| | - Lei Tao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, 999077 Clear Water Bay, Kowloon 999077, Hong Kong, P. R. China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
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10
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Li C, Song S, Li Y, Xu C, Luo Q, Guo Y, Wang X. Selective hydroboration of unsaturated bonds by an easily accessible heterotopic cobalt catalyst. Nat Commun 2021; 12:3813. [PMID: 34155208 PMCID: PMC8217234 DOI: 10.1038/s41467-021-24117-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 06/04/2021] [Indexed: 11/09/2022] Open
Abstract
Homogeneous earth-abundant metal catalysis based on well-defined molecular complexes has achieved great advance in synthetic methodologies. However, sophisticated ligand, hazardous activator and multistep synthesis starting from base metal salts are generally required for the generation of active molecular catalysts, which may hinder their broad application in large scale organic synthesis. Therefore, the development of metal cluster catalysts formed in situ from simple earth-abundant metal salts is of importance for the practical utilization of base metal resource, yet it is still in its infancy. Herein, a mixture of catalytic amounts of cobalt (II) iodide and potassium tert-butoxide is discovered to be highly active for selective hydroboration of vinylarenes and dihydroboration of nitriles, affording a good yield of diversified hydroboration products that without isolation can readily undergo further one pot transformations. It should be highlighted that the alkoxide-pinacolborane combination acts as an efficient activation strategy to activate cobalt (II) iodide for the generation of metastable heterotopic cobalt catalysts in situ, which is proposed to be catalytically active species. Homogeneous earth-abundant metal catalysis based on well-defined metal complexes is of interest for organic synthesis, but typically employs expensive catalysts, air sensitive or synthetically challenging chemicals. Here, the authors report an efficient and regio-selective catalytic system for hydroboration of vinylarenes and organic nitriles with HBPin, using commercially available CoI2 and KOtBu under ligand-free conditions.
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Affiliation(s)
- Chuhan Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Shuo Song
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Yuling Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Chang Xu
- Department of Chemistry, Anhui University, Hefei, Anhui, China
| | - Qiquan Luo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, China
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China. .,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.
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11
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Garhwal S, Kroeger AA, Thenarukandiyil R, Fridman N, Karton A, de Ruiter G. Manganese-Catalyzed Hydroboration of Terminal Olefins and Metal-Dependent Selectivity in Internal Olefin Isomerization-Hydroboration. Inorg Chem 2021; 60:494-504. [PMID: 33325695 DOI: 10.1021/acs.inorgchem.0c03451] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the past decade, the use of earth-abundant metals in homogeneous catalysis has flourished. In particular, metals such as cobalt and iron have been used extensively in reductive transformations including hydrogenation, hydroboration, and hydrosilylation. Manganese, on the other hand, has been considerably less explored in these reductive transformations. Here, we report a well-defined manganese complex, [Mn(iPrBDI)(OTf)2] (2a; BDI = bipyridinediimine), that is an active precatalyst in the hydroboration of a variety of electronically differentiated alkenes (>20 examples). The hydroboration is specifically selective for terminal alkenes and occurs with exclusive anti-Markovnikov selectivity. In contrast, when using the analogous cobalt complex [Co(iPrBDI)(OTf)2] (3a), internal alkenes are hydroborated efficiently, where a sequence of isomerization steps ultimately leads to their hydroboration. The contrasting terminal versus internal alkene selectivity for manganese and cobalt was investigated computationally and is further discussed in the herein-reported study.
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Affiliation(s)
- Subhash Garhwal
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200008 Haifa, Israel
| | - Asja A Kroeger
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, 6009 Perth, WA Australia
| | - Ranjeesh Thenarukandiyil
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200008 Haifa, Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200008 Haifa, Israel
| | - Amir Karton
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, 6009 Perth, WA Australia
| | - Graham de Ruiter
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200008 Haifa, Israel
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12
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Bergamaschi E, Beltran F, Teskey CJ. Visible-Light Controlled Divergent Catalysis Using a Bench-Stable Cobalt(I) Hydride Complex. Chemistry 2020; 26:5180-5184. [PMID: 32027425 PMCID: PMC7217149 DOI: 10.1002/chem.202000410] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Indexed: 01/22/2023]
Abstract
While the use of visible light in conjunction with transition metal catalysis offers powerful opportunities to switch between on/‐off states of catalytic activity, the next frontier would be the ability to switch the actual function of the catalyst and resulting products. Here we report such an example of multi‐dimensional catalysis. Featuring an easily prepared, bench‐stable cobalt(I) hydride complex in conjunction with pinacolborane, we can switch the reaction outcome between two widely employed transformations, olefin migration and hydroboration, with visible light as the trigger.
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Affiliation(s)
- Enrico Bergamaschi
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Frédéric Beltran
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Christopher J Teskey
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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13
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14
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Abstract
The hydroboration of alkynes with pinacolborane (HBpin) under catalyst- and solvent-free conditions was demonstrated.
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Affiliation(s)
- Ashok Kumar Jaladi
- Department of Chemistry
- Kangwon National University, and Institute for Molecular Science and Fusion Technology
- Chunchon 24341
- Republic of Korea
| | - Hyeon Seong Choi
- Department of Chemistry
- Kangwon National University, and Institute for Molecular Science and Fusion Technology
- Chunchon 24341
- Republic of Korea
| | - Duk Keun An
- Department of Chemistry
- Kangwon National University, and Institute for Molecular Science and Fusion Technology
- Chunchon 24341
- Republic of Korea
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15
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Recent advances in the chemistry of group 9—Pincer organometallics. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Ma DH, Jaladi AK, Lee JH, Kim TS, Shin WK, Hwang H, An DK. Catalytic Hydroboration of Aldehydes, Ketones, and Alkenes Using Potassium Carbonate: A Small Key to Big Transformation. ACS OMEGA 2019; 4:15893-15903. [PMID: 31592459 PMCID: PMC6776975 DOI: 10.1021/acsomega.9b01877] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/10/2019] [Indexed: 05/05/2023]
Abstract
An efficient transition-metal-free protocol for the hydroboration of aldehydes and ketones (reduction) was developed. The hydroboration of a wide range of aldehydes and ketones with pinacolborane (HBpin) under the K2CO3 catalyst has been studied. The reaction system is practical and reliable and proceeds under extremely mild and operationally simple conditions. No prior preparation of the complex metal catalyst was required, and hydroboration occurred stoichiometrically. Further, the chemoselective reduction of aldehydes over ketones was carried out. Moreover, we demonstrated the use of K2CO3 as an efficient catalyst for the hydroboration of alkenes. The operational simplicity, inexpensive and transition-metal-free catalyst, and the applicability to gram-scale synthesis strengthen its potential applications for hydroboration (reduction) at an industrial scale.
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17
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Tamang SR, Findlater M. Emergence and Applications of Base Metals (Fe, Co, and Ni) in Hydroboration and Hydrosilylation. Molecules 2019; 24:E3194. [PMID: 31484333 PMCID: PMC6749197 DOI: 10.3390/molecules24173194] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 08/16/2019] [Accepted: 08/26/2019] [Indexed: 02/08/2023] Open
Abstract
Base metal catalysis offers an alternative to reactions, which were once dominated by precious metals in hydrofunctionalization reactions. This review article details the development of some base metals (Fe, Co, and Ni) in the hydroboration and hydrosilylation reactions concomitant with a brief overview of recent advances in the field. Applications of both commercially available metal salts and well-defined metal complexes in catalysis and opportunities to further advance the field is discussed as well.
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Affiliation(s)
- Sem Raj Tamang
- Memorial Circle & Boston, Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, TX 79409, USA
| | - Michael Findlater
- Memorial Circle & Boston, Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, TX 79409, USA.
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18
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Léonard NG, Palmer WN, Friedfeld MR, Bezdek MJ, Chirik PJ. Remote, Diastereoselective Cobalt-Catalyzed Alkene Isomerization–Hydroboration: Access to Stereodefined 1,3-Difunctionalized Indanes. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03444] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nadia G. Léonard
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - W. Neil Palmer
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Max R. Friedfeld
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Máté J. Bezdek
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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19
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Spiegelberg B, Dell'Acqua A, Xia T, Spannenberg A, Tin S, Hinze S, de Vries JG. Additive-Free Isomerization of Allylic Alcohols to Ketones with a Cobalt PNP Pincer Catalyst. Chemistry 2019; 25:7820-7825. [PMID: 30973658 DOI: 10.1002/chem.201901148] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Indexed: 11/06/2022]
Abstract
Catalytic isomerization of allylic alcohols in ethanol as a green solvent was achieved by using air and moisture stable cobalt (II) complexes in the absence of any additives. Under mild conditions, the cobalt PNP pincer complex substituted with phenyl groups on the phosphorus atoms appeared to be the most active. High rates were obtained at 120 °C, even though the addition of one equivalent of base increases the speed of the reaction drastically. Although some evidence was obtained supporting a dehydrogenation-hydrogenation mechanism, it was proven that this is not the major mechanism. Instead, the cobalt hydride complex formed by dehydrogenation of ethanol is capable of double-bond isomerization through alkene insertion-elimination.
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Affiliation(s)
- Brian Spiegelberg
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
| | - Andrea Dell'Acqua
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
| | - Tian Xia
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
| | - Sergey Tin
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
| | - Sandra Hinze
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
| | - Johannes G de Vries
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany
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20
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Fan W, Li L, Zhang G. Branched-Selective Alkene Hydroboration Catalyzed by Earth-Abundant Metals. J Org Chem 2019; 84:5987-5996. [PMID: 31017441 DOI: 10.1021/acs.joc.9b00550] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Catalytic hydroboration of alkenes is a well-established method to access borane-functionalized hydrocarbons. While linear-selective hydroboration was predominantly reported, catalysts enabling opposite selectivity (branched-selective) are attracting considerable interest, especially when Earth-abundant metals are utilized. This Synopsis summarizes recent progress in Earth-abundant-metal-catalyzed, branched-selective hydroboration of alkenes while overviewing the historical contributions to this reaction using precious metals. Lessons learned from the current state of this topic that can guide future catalyst design are presented, along with challenging issues that remain to be addressed.
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Affiliation(s)
- Weiwei Fan
- College of Chemical Engineering and Pharmacy , Jingchu University of Technology , Jingmen 448000 , China.,Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
| | - Li Li
- College of Chemical Engineering and Pharmacy , Jingchu University of Technology , Jingmen 448000 , China
| | - Guoqi Zhang
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
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21
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Ling L, He Y, Zhang X, Luo M, Zeng X. Hydrogenation of (Hetero)aryl Boronate Esters with a Cyclic (Alkyl)(amino)carbene-Rhodium Complex: Direct Access to cis-Substituted Borylated Cycloalkanes and Saturated Heterocycles. Angew Chem Int Ed Engl 2019; 58:6554-6558. [PMID: 30916369 DOI: 10.1002/anie.201811210] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Indexed: 11/07/2022]
Abstract
We herein report the hydrogenation of substituted aryl- and heteroaryl boronate esters for the selective synthesis of cis-substituted borylated cycloalkanes and saturated heterocycles. A cyclic (alkyl)(amino)carbene-ligated rhodium complex with two dimethyl groups at the ortho-alkyl scaffold of the carbene showed high reactivity in promoting the hydrogenation, thereby enabling the hydrogenation of (hetero)arenes with retention of the synthetically valuable boronate group. This process constitutes a clean, atom-economic, as well as chemo- and stereoselective route for the generation of cis-configured, diversely substituted borylated cycloalkanes and saturated heterocycles that are usually elusive and difficult to prepare.
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Affiliation(s)
- Liang Ling
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yuan He
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Xue Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
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22
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Ling L, He Y, Zhang X, Luo M, Zeng X. Hydrogenation of (Hetero)aryl Boronate Esters with a Cyclic (Alkyl)(amino)carbene–Rhodium Complex: Direct Access to
cis
‐Substituted Borylated Cycloalkanes and Saturated Heterocycles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811210] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Liang Ling
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 P. R. China
| | - Yuan He
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 P. R. China
| | - Xue Zhang
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 P. R. China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 P. R. China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 P. R. China
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23
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Zeng H, Wu J, Li S, Hui C, Ta A, Cheng SY, Zheng S, Zhang G. Copper(II)-Catalyzed Selective Hydroboration of Ketones and Aldehydes. Org Lett 2019; 21:401-406. [PMID: 30624941 DOI: 10.1021/acs.orglett.8b03583] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel nonanuclear copper(II) complex obtained by a facile one-pot self-assembly was found to catalyze the hydroboration of ketones and aldehydes with the absence of an activator under mild, solvent-free conditions. The catalyst is air- and moisture-stable, displaying high efficiency (1980 h-1 turnover frequency, TOF) and chemoselectivity on aldehydes over ketones and ketones over imines. This represents a rare example of divalent copper catalyst for the hydroboration of carbonyls.
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Affiliation(s)
- Haisu Zeng
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States.,Department of Chemistry , Hunter College, The City University of New York , New York , New York 10065 , United States
| | - Jing Wu
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States.,Department of Chemistry , Hunter College, The City University of New York , New York , New York 10065 , United States
| | - Sihan Li
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States.,Department of Chemistry , Hunter College, The City University of New York , New York , New York 10065 , United States
| | - Christina Hui
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
| | - Anita Ta
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
| | - Shu-Yuan Cheng
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
| | - Shengping Zheng
- Department of Chemistry , Hunter College, The City University of New York , New York , New York 10065 , United States
| | - Guoqi Zhang
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
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24
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Jaladi AK, Kim H, Lee JH, Shin WK, Hwang H, An DK. Lithium diisobutyl-tert-butoxyaluminum hydride (LDBBA) catalyzed hydroboration of alkynes and imines with pinacolborane. NEW J CHEM 2019. [DOI: 10.1039/c9nj03931g] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Lithium diisobutyl-tert-butoxyaluminum hydride (LDBBA) catalyzed hydroboration of alkynes and imines with pinacolborane (HBpin) was demonstrated.
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Affiliation(s)
- Ashok Kumar Jaladi
- Department of Chemistry
- Kangwon National University
- and Institute for Molecular Science and Fusion Technology
- Chuncheon 24341
- Republic of Korea
| | - Hanbi Kim
- Department of Chemistry
- Kangwon National University
- and Institute for Molecular Science and Fusion Technology
- Chuncheon 24341
- Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry
- Kangwon National University
- and Institute for Molecular Science and Fusion Technology
- Chuncheon 24341
- Republic of Korea
| | - Won Kyu Shin
- Department of Chemistry
- Kangwon National University
- and Institute for Molecular Science and Fusion Technology
- Chuncheon 24341
- Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry
- Kangwon National University
- and Institute for Molecular Science and Fusion Technology
- Chuncheon 24341
- Republic of Korea
| | - Duk Keun An
- Department of Chemistry
- Kangwon National University
- and Institute for Molecular Science and Fusion Technology
- Chuncheon 24341
- Republic of Korea
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25
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Vijaykumar G, Bhunia M, Mandal SK. A phenalenyl-based nickel catalyst for the hydroboration of olefins under ambient conditions. Dalton Trans 2019; 48:5779-5784. [PMID: 30976767 DOI: 10.1039/c9dt00468h] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this report, nickel-catalyzed hydroboration of vinylarenes and aliphatic alkenes is investigated. The non-innocent phenalenyl ligand moiety in the nickel complex Ni(PLY)2(THF)2 (1) was utilized as an electron reservoir for the selective hydroboration reaction in the presence of pinacolborane under ambient conditions. The mechanistic investigations revealed that the alkene hydroboration reaction takes place through a single electron transfer (SET) from the phenalenyl ligand backbone leading to the cleavage of the B-H bond.
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Affiliation(s)
- Gonela Vijaykumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.
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26
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Zhang G, Li S, Wu J, Zeng H, Mo Z, Davis K, Zheng S. Highly efficient and selective hydroboration of terminal and internal alkynes catalysed by a cobalt(ii) coordination polymer. Org Chem Front 2019. [DOI: 10.1039/c9qo00834a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Selective hydroboration of terminal and internal alkynes is catalysed using a CoII-coordination polymer precatalyst with TOFs of up to 47 520 h−1.
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Affiliation(s)
- Guoqi Zhang
- Department of Sciences
- John Jay College and Ph.D. Program in Chemistry
- The Graduate Center of the City University of New York
- New York
- USA
| | - Sihan Li
- Department of Sciences
- John Jay College and Ph.D. Program in Chemistry
- The Graduate Center of the City University of New York
- New York
- USA
| | - Jing Wu
- Department of Sciences
- John Jay College and Ph.D. Program in Chemistry
- The Graduate Center of the City University of New York
- New York
- USA
| | - Haisu Zeng
- Department of Sciences
- John Jay College and Ph.D. Program in Chemistry
- The Graduate Center of the City University of New York
- New York
- USA
| | - Zixuan Mo
- Department of Sciences
- John Jay College and Ph.D. Program in Chemistry
- The Graduate Center of the City University of New York
- New York
- USA
| | - Keziah Davis
- Department of Sciences
- John Jay College and Ph.D. Program in Chemistry
- The Graduate Center of the City University of New York
- New York
- USA
| | - Shengping Zheng
- Department of Chemistry
- Hunter College
- the City University of New York
- New York
- USA
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27
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Cruz TFC, Pereira LCJ, Waerenborgh JC, Veiros LF, Gomes PT. Hydroboration of terminal olefins with pinacolborane catalyzed by new 2-iminopyrrolyl iron(ii) complexes. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02319k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
New Fe(ii) mono(2-iminopyrrolyl) complexes catalyze the hydroboration of terminal olefins with pinacolborane via a borane oxidative addition pathway.
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Affiliation(s)
- Tiago F. C. Cruz
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Laura C. J. Pereira
- C2TN-Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - João C. Waerenborgh
- C2TN-Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Luís F. Veiros
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Pedro T. Gomes
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
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28
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Ai W, Zhong R, Liu X, Liu Q. Hydride Transfer Reactions Catalyzed by Cobalt Complexes. Chem Rev 2018; 119:2876-2953. [DOI: 10.1021/acs.chemrev.8b00404] [Citation(s) in RCA: 219] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Wenying Ai
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Rui Zhong
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xufang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Qiang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
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29
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Verma PK, A. S. S, Geetharani K. Markovnikov-Selective Co(I)-Catalyzed Hydroboration of Vinylarenes and Carbonyl Compounds. Org Lett 2018; 20:7840-7845. [DOI: 10.1021/acs.orglett.8b03356] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Piyush Kumar Verma
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Sethulekshmi A. S.
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - K. Geetharani
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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30
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Zhang G, Wu J, Li S, Cass S, Zheng S. Markovnikov-Selective Hydroboration of Vinylarenes Catalyzed by a Cobalt(II) Coordination Polymer. Org Lett 2018; 20:7893-7897. [PMID: 30525683 DOI: 10.1021/acs.orglett.8b03431] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Highly efficient and practical hydroboration of alkenes has been catalyzed by an inexpensive and air-stable cobalt(II) coordination polymer (CP) in the presence of KO tBu. Complete conversion of alkenes to alkylboronates were performed within just 5 min with low catalyst loading (0.025 mol %), achieving the record high turnover frequencies of up to 47 520 h-1. For a range of vinylarenes, unusual Markovnikov selectivity was observed.
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Affiliation(s)
- Guoqi Zhang
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
| | - Jing Wu
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States.,Department of Chemistry , Hunter College, the City University of New York , New York , New York 10065 , United States
| | - Sihan Li
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States.,Department of Chemistry , Hunter College, the City University of New York , New York , New York 10065 , United States
| | - Sean Cass
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10019 , United States
| | - Shengping Zheng
- Department of Chemistry , Hunter College, the City University of New York , New York , New York 10065 , United States
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31
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Junge K, Papa V, Beller M. Cobalt-Pincer Complexes in Catalysis. Chemistry 2018; 25:122-143. [PMID: 30182374 DOI: 10.1002/chem.201803016] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/14/2018] [Indexed: 01/22/2023]
Abstract
Non-noble metal catalysts based on pincer type compounds are of special interest for organometallic chemistry and organic synthesis. Next to iron and manganese, currently cobalt-pincer type complexes are successfully applied in various catalytic reactions. In this review the recent progress in (de)hydrogenation, transfer hydrogenation, hydroboration and hydrosilylation as well as dehydrogenative coupling reactions using cobalt-pincer complexes is summarised.
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Affiliation(s)
- Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Straße 29a, 18055, Rostock, Germany
| | - Veronica Papa
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Straße 29a, 18055, Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der, Universität Rostock, Albert-Einstein-Straße 29a, 18055, Rostock, Germany
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32
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Cruz TFC, Veiros LF, Gomes PT. Cobalt(I) Complexes of 5-Aryl-2-iminopyrrolyl Ligands: Synthesis, Spin Isomerism, and Application in Catalytic Hydroboration. Inorg Chem 2018; 57:14671-14685. [DOI: 10.1021/acs.inorgchem.8b02392] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tiago F. C. Cruz
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Luís F. Veiros
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Pedro T. Gomes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
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33
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Li L, Liu E, Cheng J, Zhang G. Iron(ii) coordination polymer catalysed hydroboration of ketones. Dalton Trans 2018; 47:9579-9584. [PMID: 29974086 DOI: 10.1039/c8dt02134a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Catalytic hydroboration of ketones with pinacolborane was achieved with a 2D iron(ii) coordination polymer (CP) of a divergent 4,2';6',4''-terpyridine (tpy) derivative under mild conditions with high efficiency. This solid iron catalyst system is more active towards the hydroboration of ketones than that of aldehydes, displaying a different trend of reactivity from known homogeneous iron hydroboration catalysts.
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Affiliation(s)
- Li Li
- Hubei Key Laboratory of Drug Synthesis and Optimization, Jingchu University of Technology, Hubei 448000, China
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34
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Cruz TFC, Lopes PS, Pereira LCJ, Veiros LF, Gomes PT. Hydroboration of Terminal Olefins with Pinacolborane Catalyzed by New Mono(2-Iminopyrrolyl) Cobalt(II) Complexes. Inorg Chem 2018; 57:8146-8159. [PMID: 29953212 DOI: 10.1021/acs.inorgchem.8b00568] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 5-substituted 2-aryliminopyrrolyl ligand precursors of the type 5-R-2-[ N-(2,6-diisopropylphenyl)formimino]-1 H-pyrrole (R = 2,6-Me2-C6H3 (1a), 2,4,6-iPr3-C6H2 (1b), 2,4,6-Ph3-C6H3 (1c; reported in this work), anthracen-9-yl (1d), CPh3 (1e; reported in this work)) were treated with K[N(SiMe3)2] in toluene to yield the respective 5-R-2-[ N-(2,6-diisopropylphenyl)formimino]pyrrolyl potassium salts 2a-e in high yields. The paramagnetic 15-electron Co(II) complexes of the type [Co{κ2 N,N'-5-R-NC4H2-2-C(H)═N(2,6-iPr2-C6H3)}(Py)Cl] (3a-e; Py = pyridine) were prepared by salt metathesis of CoCl2(Py)4 with the respective potassium salts 2a-e in moderate to good yields. When the CoCl2(THF)1.5 precursor was combined with the in situ prepared sodium salt of ligand precursor 1b, the trinuclear complex [Co{κ2 N, N'-5-(2,4,6-iPr3-C6H2)-NC4H2-2-C(H)═N(2,6-iPr2-C6H3)}(μ-Cl)]2[(μ-Cl)2Co(THF)2] (4) was obtained in high yields. Complexes 3a-e have high-spin electronic configurations both in solution and in the solid state. X-ray diffraction studies of complexes 3a,e confirmed distorted tetrahedral coordination geometries. Complex 4, on the other hand, is a linear trinuclear Co(II)-Co(II)-Co(II) complex with two terminal distorted tetrahedral four-coordinate sites and a central octahedral six-coordinate site, all in the high-spin state, S = 3/2, as confirmed by the magnetization measurements and DFT calculations. Solid-state magnetic measurements in both complexes 3a and 4 point to paramagnetic behavior with a significant contribution of spin-orbit coupling. Additionally, intramolecular antiferromagnetic coupling of the adjacent cobalt atoms is observed in 4. The Co(II) family 3a-d, on activation with K(HBEt3), catalyzed the hydroboration of several α-olefins with pinacolborane, in good to high yields (50-80%). This system almost exclusively yielded the anti-Markovnikov (a-Mk) addition product, except when styrene was used, where the selectivity in the Markovnikov (Mk) product increased with increasing steric bulkiness of the 5-R-2-iminopyrrolyl substituent, with the a-Mk:Mk molar ratio varying from 2.33:1 (3a, R = 2,6-Me2-C6H3) to 0.75:1 (3c, R = 2,4,6-Ph3-C6H3). Preliminary mechanistic studies indicate that the activation by K(HBEt3) gave rise to a Co(I) species, the catalyst system likely following an oxidative addition pathway.
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Affiliation(s)
- Tiago F C Cruz
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Patrícia S Lopes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Laura C J Pereira
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico , Universidade de Lisboa , 2695-066 Bobadela LRS , Portugal
| | - Luís F Veiros
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
| | - Pedro T Gomes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico , Universidade de Lisboa , Av. Rovisco Pais 1 , 1049-001 Lisboa , Portugal
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35
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Wu J, Zeng H, Cheng J, Zheng S, Golen JA, Manke DR, Zhang G. Cobalt(II) Coordination Polymer as a Precatalyst for Selective Hydroboration of Aldehydes, Ketones, and Imines. J Org Chem 2018; 83:9442-9448. [DOI: 10.1021/acs.joc.8b01094] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jing Wu
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10019, United States
- Department of Chemistry, Hunter College, The City University of New York, New York, New York 10065, United States
| | - Haisu Zeng
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10019, United States
- Department of Chemistry, Hunter College, The City University of New York, New York, New York 10065, United States
| | - Jessica Cheng
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10019, United States
| | - Shengping Zheng
- Department of Chemistry, Hunter College, The City University of New York, New York, New York 10065, United States
| | - James A. Golen
- Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth, North Dartmouth, Massachusetts 02747, United States
| | - David R. Manke
- Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth, North Dartmouth, Massachusetts 02747, United States
| | - Guoqi Zhang
- Department of Sciences, John Jay College and Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10019, United States
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Junge K, Wendt B, Cingolani A, Spannenberg A, Wei Z, Jiao H, Beller M. Cobalt Pincer Complexes for Catalytic Reduction of Carboxylic Acid Esters. Chemistry 2017; 24:1046-1052. [DOI: 10.1002/chem.201705201] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Indexed: 01/06/2023]
Affiliation(s)
- Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a Rostock 18059 Germany
| | - Bianca Wendt
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a Rostock 18059 Germany
| | - Andrea Cingolani
- Dipartiento di Chimica Industriale “Toso Montanari”; University of Bologna; viale Risorgimento 4 40136 Bologna Italy
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a Rostock 18059 Germany
| | - Zhihong Wei
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a Rostock 18059 Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a Rostock 18059 Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Straße 29a Rostock 18059 Germany
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