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Xu Y, Feng B, Li S, Fang H. Alkoxycarbonyl Groups in Metalloesters Showing Oxocarbenium-like Structure and Alkylating Reactivity. Angew Chem Int Ed Engl 2024; 63:e202402370. [PMID: 38426853 DOI: 10.1002/anie.202402370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
In contrast to the well-documented acylating reactivity, the alkylating reactivity of the alkoxycarbonyl group, as signified by its oxocarbenium-like resonance structure, remains almost unexplored. Herein, the first series of Co/Ni dinuclear metalloesters exhibiting the novel oxocarbenium-like alkoxycarbonyl groups were synthesized and characterized. In these deformed alkoxycarbonyl groups, the Ccarbonyl-Oalkoxyl bonds were contracted to 1.177(11)~1.191(9) Å with the elongations of the Ccarbonyl=Ocarbonyl bonds to 1.368(13)~1.441(9) Å. Meanwhile, the O-Calkyl bonds were also elongated to 1.522(11) ~1.607(15) Å, and were by far the longest O-Calkyl bonds reported for alkoxycarbonyl groups. As triggered by the long O-Calkyl distances, the alkylating reactivity of the oxocarbenium-like methoxycarbonyl group towards a series of C/N/O-nucleophiles via the rare BAL2 mechanism at ambient conditions was examined. Furthermore, the homo-etherifications of alcohols mediated by the Co/Ni dinuclear metalloesters were investigated. The yields followed the trend ethanol≫n-propanol≫n-butanol ≈n-pentanol, that closely related to the structure features of the alkoxycarbonyl groups in corresponding metalloesters: while the ethoxycarbonyl group showed the reactive oxocarbenium-like framework, the n-propoxycarbonyl group displayed the dioxocarbenium-like skeleton with a shorter O-Calkyl bond; In comparison, the classical frameworks with unactivated alkyl moieties were observed for n-butoxycarbonyl and n-pentoxycarbonyl groups.
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Affiliation(s)
- Yingzhuang Xu
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, P. R. China
| | - Bingjian Feng
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, P. R. China
| | - Songyi Li
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, P. R. China
| | - Huayi Fang
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, P. R. China
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2
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Ton S, Ravn AK, Hoffmann DV, Day CS, Kingston L, Elmore CS, Skrydstrup T. Rapid Access to Carbon-Isotope-Labeled Alkyl and Aryl Carboxylates Applying Palladacarboxylates. JACS AU 2023; 3:756-761. [PMID: 37006775 PMCID: PMC10052257 DOI: 10.1021/jacsau.2c00708] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 06/19/2023]
Abstract
Herein, we report a strategy for the formation of isotopically labeled carboxylic esters from boronic esters/acids using a readily accessible palladium carboxylate complex as an organometallic source of isotopically labeled functional groups. The reaction allows access to either unlabeled or full 13C- or 14C-isotopically labeled carboxylic esters, and the method is characterized by its operational simplicity, mild conditions, and general substrate scope. Our protocol is further extended to a carbon isotope replacement strategy, involving an initial decarbonylative borylation procedure. Such an approach allows access to isotopically labeled compounds directly from the unlabeled pharmaceutical, which can have implications for drug discovery programs.
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Affiliation(s)
- Stephanie
J. Ton
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Anne K. Ravn
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Daniel Vrønning Hoffmann
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Craig S. Day
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Lee Kingston
- Isotope
Chemistry, Early Chemical Development, Pharmaceutical Sciences, R&D, AstraZeneca Pharmaceuticals, Gothenburg 43183, Sweden
| | - Charles S. Elmore
- Isotope
Chemistry, Early Chemical Development, Pharmaceutical Sciences, R&D, AstraZeneca Pharmaceuticals, Gothenburg 43183, Sweden
| | - Troels Skrydstrup
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
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3
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Zhang J, Fang H. Insertion of Carbon Monoxide into the Terminal Co–O Bond in a Methoxocobalt(III) Complex via a Tuneable Mechanism. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia Zhang
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin 300350, China
| | - Huayi Fang
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin 300350, China
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Møller MS, Kongsted J, McKenzie CJ. Preparation of organocobalt(iii) complexes via O 2 activation. Dalton Trans 2021; 50:4819-4829. [PMID: 33877179 DOI: 10.1039/d1dt00563d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coupling of selective C-H activation with O2 activation is an important goal for organic synthesis. New experimental and computational results, along with the results from experimental work accumulated over many decades, now unequivocally link O2 activation with C-H activation by the classic Co(salen) complexes. A common holistic mechanistic framework can rationalise the formation of ostensibly diverse peroxo, superoxo, organo and alkoxide complexes of CoIII(salen). DFT calculations show that cobalt(iii)superoxo, dicobalt(iii)peroxo and cobalt(iii)hydroperoxo complexes are all viable intermediates as participants in hydrogen atom transfer reactions, whereas a Co(iv)oxo intermediate is unlikely. The reaction conditions will determine the pathway followed and all pathways are initiated through the initial formation of a superoxo complex, CoIII(salen)(O2˙)(MeOH) (EPR: g = 2.025, A = 19 G). Organo and alkoxide ligands are derived from solvent media and the trends in reactivity reveal that combination of the pKa and BDE of the C-H of the respective solvent substrates are important. These data explain why landmark, structurally characterized, μ2-η1,η2-peroxide and η1-superoxide Co(salen)-O2 adducts were predominantly isolated from solvents with high C-H pKa values (DMSO, DMF, DMA).
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Affiliation(s)
- Mads Sondrup Møller
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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5
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Chambers DR, Juneau A, Ludwig CT, Frenette M, Martin DBC. C–O Bond Cleavage of Alcohols via Visible Light Activation of Cobalt Alkoxycarbonyls. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00552] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Dana R. Chambers
- Department of Chemistry, University of California Riverside, Riverside, California 92521, United States
| | - Antoine Juneau
- Département de Chimie, Université du Québec à Montréal, Case Postale
8888, Succursale Centre-Ville, Montréal, Quebec H3C 3P8, Canada
| | - Cory T. Ludwig
- Department of Chemistry, University of California Riverside, Riverside, California 92521, United States
| | - Mathieu Frenette
- Département de Chimie, Université du Québec à Montréal, Case Postale
8888, Succursale Centre-Ville, Montréal, Quebec H3C 3P8, Canada
| | - David B. C. Martin
- Department of Chemistry, University of California Riverside, Riverside, California 92521, United States
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6
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Demarteau J, Debuigne A, Detrembleur C. Organocobalt Complexes as Sources of Carbon-Centered Radicals for Organic and Polymer Chemistries. Chem Rev 2019; 119:6906-6955. [DOI: 10.1021/acs.chemrev.8b00715] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jérémy Demarteau
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liège, Allée du 6 Août, Building B6A, Agora Square, 4000 Liège, Belgium
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liège, Allée du 6 Août, Building B6A, Agora Square, 4000 Liège, Belgium
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liège, Allée du 6 Août, Building B6A, Agora Square, 4000 Liège, Belgium
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Qiu S, Zhai S, Wang H, Tao C, Zhao H, Zhai H. Efficient Synthesis of Phthalimides via Cobalt-Catalyzed C(sp
2
)−H Carbonylation of Benzoyl Hydrazides with Carbon Monoxide. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800388] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shuxian Qiu
- The State Key Laboratory of Chemical Oncogenomics and the Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 People's Republic of China
| | - Shengxian Zhai
- The State Key Laboratory of Chemical Oncogenomics and the Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 People's Republic of China
- The State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Huifei Wang
- The State Key Laboratory of Chemical Oncogenomics and the Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 People's Republic of China
| | - Cheng Tao
- The State Key Laboratory of Chemical Oncogenomics and the Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 People's Republic of China
- The State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Hua Zhao
- The State Key Laboratory of Chemical Oncogenomics and the Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 People's Republic of China
| | - Hongbin Zhai
- The State Key Laboratory of Chemical Oncogenomics and the Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 People's Republic of China
- The State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin) China
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