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1
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Capaldo L, Ravelli D, Fagnoni M. Direct Photocatalyzed Hydrogen Atom Transfer (HAT) for Aliphatic C-H Bonds Elaboration. Chem Rev 2021; 122:1875-1924. [PMID: 34355884 PMCID: PMC8796199 DOI: 10.1021/acs.chemrev.1c00263] [Citation(s) in RCA: 357] [Impact Index Per Article: 119.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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Direct photocatalyzed
hydrogen atom transfer (d-HAT) can be considered
a method of choice for the elaboration of
aliphatic C–H bonds. In this manifold, a photocatalyst (PCHAT) exploits the energy of a photon to trigger the homolytic
cleavage of such bonds in organic compounds. Selective C–H
bond elaboration may be achieved by a judicious choice of the hydrogen
abstractor (key parameters are the electronic character and the molecular
structure), as well as reaction additives. Different are the classes
of PCsHAT available, including aromatic ketones, xanthene
dyes (Eosin Y), polyoxometalates, uranyl salts, a metal-oxo porphyrin
and a tris(amino)cyclopropenium radical dication. The processes (mainly
C–C bond formation) are in most cases carried out under mild
conditions with the help of visible light. The aim of this review
is to offer a comprehensive survey of the synthetic applications of
photocatalyzed d-HAT.
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Affiliation(s)
- Luca Capaldo
- Flow Chemistry Group, Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Davide Ravelli
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
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2
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Elagamy A, Shaw R, Panwar R, Shally, Ram VJ, Pratap R. Synthesis of Highly Functionalized Spirobutenolides via a Nitroalkane-Mediated Ring Contraction of 2-Oxobenzo[h]chromenes through Denitration. J Org Chem 2019; 84:1154-1161. [DOI: 10.1021/acs.joc.8b02257] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amr Elagamy
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Ranjay Shaw
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Rahul Panwar
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Shally
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Vishnu Ji Ram
- Department of Chemistry, University of Lucknow, Lucknow, Uttar Pradesh 226007, India
| | - Ramendra Pratap
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
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3
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Sutar RL, Sen S, Eivgi O, Segalovich G, Schapiro I, Reany O, Lemcoff NG. Guiding a divergent reaction by photochemical control: bichromatic selective access to levulinates and butenolides. Chem Sci 2018; 9:1368-1374. [PMID: 29675185 PMCID: PMC5885942 DOI: 10.1039/c7sc05094a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 12/18/2017] [Indexed: 01/02/2023] Open
Abstract
Allylic and acrylic substrates may be efficiently transformed by a sequential bichromatic photochemical process into derivatives of levulinates or butenolides with high selectivity when phenanthrene is used as a regulator. Thus, UV-A photoinduced cross-metathesis (CM) couples the acrylic and allylic counterparts and subsequent UV-C irradiation initiates E-Z isomerization of the carbon-carbon double bond, followed by one of two competing processes; namely, cyclization by transesterification or a 1,5-H shift and tautomerization. Quantum chemical calculations demonstrate that intermediates are strongly blue-shifted for the cyclization while red-shifted for the 1,5-H shift reaction. Hence, delaying the double bond migration by employing UV-C absorbing phenanthrene, results in a selective novel divergent all-photochemical pathway for the synthesis of fundamental structural motifs of ubiquitous natural products.
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Affiliation(s)
- Revannath L Sutar
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
- Department of Natural Sciences , The Open University of Israel , Ra'anana , 43537 , Israel
| | - Saumik Sen
- Fritz Haber Center for Molecular Dynamics , Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem , 91904 , Israel
| | - Or Eivgi
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
| | - Gal Segalovich
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
| | - Igor Schapiro
- Fritz Haber Center for Molecular Dynamics , Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem , 91904 , Israel
| | - Ofer Reany
- Department of Natural Sciences , The Open University of Israel , Ra'anana , 43537 , Israel
| | - N Gabriel Lemcoff
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
- Ilse Katz Institute for Nanoscale Science and Technology , Ben-Gurion University of the Negev , Beer-Sheva , 84105 , Israel
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4
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5
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Ouchi A, Liu C, Kaneda M, Hyugano T. Photochemical C-C Bond Formation between Alcohols and Olefins by an Environmentally Benign Radical Reaction. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300115] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Ljubić I, Matasović B, Bonifačić M. An efficient buffer-mediated control between free radical substitution and proton-coupled electron transfer: dehalogenation of iodoethane by the α-hydroxyethyl radical in aqueous solution. Phys Chem Chem Phys 2013; 15:18001-11. [DOI: 10.1039/c3cp53205d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Wille U. Radical Cascades Initiated by Intermolecular Radical Addition to Alkynes and Related Triple Bond Systems. Chem Rev 2012; 113:813-53. [DOI: 10.1021/cr100359d] [Citation(s) in RCA: 465] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Uta Wille
- School of Chemistry and
BIO21 Molecular Science and
Biotechnology Institute, Australian Research Council Centre of Excellence
for Free Radical Chemistry and Biotechnology, The University of Melbourne, 30 Flemington Road, Parkville, Victoria
3010, Australia
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8
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Maury J, Feray L, Bertrand MP. Unprecedented Noncatalyzed anti-Carbozincation of Diethyl Acetylenedicarboxylate through Alkylzinc Group Radical Transfer. Org Lett 2011; 13:1884-7. [DOI: 10.1021/ol200419x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julien Maury
- Laboratoire Chimie Provence, UMR 6264, Equipe CMO, case 562, Université Aix-Marseille, FST Saint-Jérôme, av. Escadrille Normandie Niemen, 13397 Marseille cedex 20, France
| | - Laurence Feray
- Laboratoire Chimie Provence, UMR 6264, Equipe CMO, case 562, Université Aix-Marseille, FST Saint-Jérôme, av. Escadrille Normandie Niemen, 13397 Marseille cedex 20, France
| | - Michèle P. Bertrand
- Laboratoire Chimie Provence, UMR 6264, Equipe CMO, case 562, Université Aix-Marseille, FST Saint-Jérôme, av. Escadrille Normandie Niemen, 13397 Marseille cedex 20, France
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9
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Liu ZQ, Sun L, Wang JG, Han J, Zhao YK, Zhou B. Free-Radical-Initiated Coupling Reaction of Alcohols and Alkynes: Not C−O but C−C Bond Formation. Org Lett 2009; 11:1437-9. [DOI: 10.1021/ol900145u] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhong-Quan Liu
- Institute of Organic Chemistry, Gannan Normal University, Ganzhou, Jiangxi 341000, P. R. China, and State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Liang Sun
- Institute of Organic Chemistry, Gannan Normal University, Ganzhou, Jiangxi 341000, P. R. China, and State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jian-Guo Wang
- Institute of Organic Chemistry, Gannan Normal University, Ganzhou, Jiangxi 341000, P. R. China, and State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jie Han
- Institute of Organic Chemistry, Gannan Normal University, Ganzhou, Jiangxi 341000, P. R. China, and State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yan-Kai Zhao
- Institute of Organic Chemistry, Gannan Normal University, Ganzhou, Jiangxi 341000, P. R. China, and State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Bo Zhou
- Institute of Organic Chemistry, Gannan Normal University, Ganzhou, Jiangxi 341000, P. R. China, and State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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