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Qin XY, Wang JY, Geng FZ, Hao WJ, Tu SJ, Jiang B. Engaging yne-allenones in tunable catalytic silane-mediated conjugate transfer reductions. Chem Commun (Camb) 2021; 57:5394-5397. [PMID: 33942828 DOI: 10.1039/d1cc01422f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
New tunable catalytic [2+2] cycloaddition/silane-mediated conjugate transfer reductions of yne-allenones have been developed, by which substituent-diverse cyclobutarenes with generally good yields were selectively synthesized by adjusting Fe-H and Cu-H catalytic systems. Use of the Fe-H system triggers 1,6-conjugate reduction to dihydrocyclobuta[a]naphthalen-4-ols whereas the Cu-H complex enables 1,4-conjugate reduction to cyclobuta[a]naphthalen-4(2H)-ones.
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Affiliation(s)
- Xiao-Yan Qin
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Jia-Yin Wang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Fang-Zhou Geng
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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2
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Wang JY, Xie FL, Hu JQ, Yang SZ, Wang YJ, Hao WJ, Tu SJ, Jiang B. Atom-economic synthesis of cyclobuta[a]naphthalen-4-ols via a base-promoted [2 + 2] cycloaddition/1,6-nucleophilic addition cascade. Org Biomol Chem 2018; 16:7104-7108. [PMID: 30234224 DOI: 10.1039/c8ob02042f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A first atom-economic [2 + 2] cycloaddition/1,6-conjugate addition cascade of yne-allenones with C-nucleophiles including 1,3-dicarbonyls and α,α-dicyanoolefins under base-promoted conditions has been established, enabling the direct construction of C(sp3)-C(sp3) bonds to generate cyclobuta[a]naphthalen-1-ols with generally good yields. These resulting products have a cyclobutene unit that contains both an aryl and alkyl group.
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Affiliation(s)
- Jia-Yin Wang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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3
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Al Zoubi W, Ko YG. Organometallic complexes of Schiff bases: Recent progress in oxidation catalysis. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.08.023] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Wegmann M, Bach T. Influence of the −CH2X Substituent on the Regioselectivity of Intramolecular meta-Photocycloaddition Reactions. J Org Chem 2015; 80:2017-23. [DOI: 10.1021/jo5028613] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Marcus Wegmann
- Lehrstuhl für Organische
Chemie I, Technische Universität München, Lichtenbergstr.
4, 85747 Garching, Germany
| | - Thorsten Bach
- Lehrstuhl für Organische
Chemie I, Technische Universität München, Lichtenbergstr.
4, 85747 Garching, Germany
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Mathur D, Prasad AK, Cameron TS, Jha A. Novel approach to 3,3-dimethyl-4-morpholino-3,4-dihydrocoumarins via hetero-Diels–Alder reaction. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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6
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Agopcan S, Çelebi-Ölçüm N, Üçışık MN, Sanyal A, Aviyente V. Origins of the diastereoselectivity in hydrogen bonding directed Diels–Alder reactions of chiral dienes with achiral dienophiles: a computational study. Org Biomol Chem 2011; 9:8079-88. [DOI: 10.1039/c1ob06285a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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7
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Larkin SM, Vreven T, Bearpark MJ, Morokuma K. The application of the ONIOM hybrid method to the cycloaddition reactions of bromo-substituted 2(H)-pyran-2-ones. CAN J CHEM 2009. [DOI: 10.1139/v09-027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigate the performance of Our own N-layered Integrated molecular Orbital and molecular Mechanics (ONIOM) hybrid computational method applied to Diels–Alder reactions of bromo-2(H)-pyran-2-ones, combining the B3LYP/6–31G(d) method with a variety of low-level methods. We show that ONIOM is able to reproduce full B3LYP calculations, including the prediction of the stereoselectivity, which requires accurate potentials. We focus on the various ways in which the performance and potential errors of ONIOM can be analyzed, and show that the best method combination depends on the property one is interested in.
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Affiliation(s)
- Susan M. Larkin
- Department of Chemistry, Imperial College London, South Kensington campus, London SW7 2AZ, UK
- Gaussian, Inc, 340 Quinnipiac St Bldg 40, Wallingford, CT 06492 USA
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Thom Vreven
- Department of Chemistry, Imperial College London, South Kensington campus, London SW7 2AZ, UK
- Gaussian, Inc, 340 Quinnipiac St Bldg 40, Wallingford, CT 06492 USA
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Michael J. Bearpark
- Department of Chemistry, Imperial College London, South Kensington campus, London SW7 2AZ, UK
- Gaussian, Inc, 340 Quinnipiac St Bldg 40, Wallingford, CT 06492 USA
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Keiji Morokuma
- Department of Chemistry, Imperial College London, South Kensington campus, London SW7 2AZ, UK
- Gaussian, Inc, 340 Quinnipiac St Bldg 40, Wallingford, CT 06492 USA
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
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8
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Baki S, Maddaluno J, Derdour A, Chaquin P. Diels–Alder Reactions of Symmetrically 1,4-Disubstituted Dienes: Theoretical Study on the Influence of the Configuration of the Double Bonds on the Regio- and Endoselectivity. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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9
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Sharma P, Kumar A, Sahu V, Singh J. Frontier orbital interactions in the hetero Diels–Alder cycloaddition of diazadienes. CAN J CHEM 2008. [DOI: 10.1139/v08-035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This work deals with the molecular orbital calculation studies performed on different diazadienes to assess their reactivity pattern. The interaction of these diazadienes with various electron-poor and electron-rich dienophiles leads to the formation of diazines and tetrazines as the cycloadducts. The results from frontier orbital interactions were used to rationalize the reactivity and predictability of NDAC and IEDDAC reaction pathways. Correlation studies were also performed to predict reactivity sequence using a number of electronic descriptors, such as electrophilicity index (ω), chemical potential (µ), electronic charge ΔNmax, and chemical hardness η. Moreover, these studies exhibit good compatibility with experimental observations.Key words: AM1, MNDO, PM3, diazadienes, tetrazines, electrophilicity index, chemical potential.
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Lahiri S, Yadav S, Banerjee S, Patil MP, Sunoj RB. Face-Selective Diels−Alder Reactions between Unsymmetrical Cyclohexadienes and Symmetric trans-Dienophile: An Experimental and Computational Investigation. J Org Chem 2007; 73:435-44. [DOI: 10.1021/jo701884d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Saswati Lahiri
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India, and Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Somnath Yadav
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India, and Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Srirupa Banerjee
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India, and Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Mahendra P. Patil
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India, and Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Raghavan B. Sunoj
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India, and Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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11
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Griffith GA, Hillier IH, Moralee AC, Percy JM, Roig R, Vincent MA. Interplay of Structure and Reactivity in a Most Unusual Furan Diels-Alder Reaction. J Am Chem Soc 2006; 128:13130-41. [PMID: 17017793 DOI: 10.1021/ja061458p] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Difluorinated alkenoate ethyl 3,3-difluoro-2-(N,N-diethylcarbamoyloxy)-2-propenoate reacts rapidly and in high yield with furan and a range of substituted furans in the presence of a tin(IV) catalyst. Non-fluorinated congener 2-(N,N-diethylcarbamoyloxy)-2-propenoate fails to react at all under the same conditions. These reactions have been explored using density functional theory (DFT) calculations. They reveal a highly polar transition state, which is stabilized by the Lewis acid catalyst SnCl(4) and by polar solvents. In the presence of both catalyst and solvent, a two-step reaction is predicted, corresponding to the stepwise formation of the two new carbon-carbon bonds via transition states which have similar energies in all cases. Our experimental observations of the lack of reaction of the non-fluorinated dienophile, the stereochemical outcomes, and the rate acceleration accompanying furan methylation are all well predicted by our calculations. The calculated free energy barriers generally correlate well with measured reaction rates, supporting a reaction mechanism in which zwitterionic character is developed strongly. An in situ ring opening reaction of exo-cycloadduct ethyl exo-2-(N,N-diethylcarbamoyloxy)-3,3-difluoro-7-oxabicyclo[2.2.1]hept-5-enyl-2-endo-carboxylate, which results in the formation of cyclic carbonate ethyl 4,4-difluoro-5-hydroxy-2-oxo-5,7a-dihydro-4H-benzo[1,3]dioxole-3a-carboxylate by a Curtin-Hammett mechanism, has also been examined. Substantial steric opposition to Lewis acid binding prevents carbonate formation from 2-substituted furans.
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Affiliation(s)
- Gerry A Griffith
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, UK
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12
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Afarinkia K, Bahar A, Bearpark MJ, Garcia-Ramos Y, Ruggiero A, Neuss J, Vyas M. Investigation of the Diels-Alder cycloadditions of 2(H)-1,4-oxazin-2-ones. J Org Chem 2006; 70:9529-37. [PMID: 16268629 DOI: 10.1021/jo051646i] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[Reaction: see text]. A variety of 5-chloro-2(H)-1,4-oxazin-2-ones bearing a range of substituents at their 3- and 6-positions undergo Diels-Alder cycloaddition as a 2-azadiene component with electron-rich, electron-deficient, and electron-neutral dienophiles. These reactions proceed with moderate regio- and stereoselectivity to afford relatively stable and readily isolable bridged bicyclic lactone cycloadducts. Chemical manipulation of these cycloadducts affords highly substituted and functionally rich piperidines. The regio- and stereochemical preferences of the cycloadditions of 5-chloro-2(H)-1,4-oxazin-2-ones are investigated computationally using density functional theory (B3LYP/6-31G).
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Affiliation(s)
- Kamyar Afarinkia
- Department of Chemistry, King's College, Strand, London WC2R 2LS, UK.
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Afarinkia K, Bearpark MJ, Ndibwami A. An Experimental and Computational Investigation of the Diels−Alder Cycloadditions of Halogen-Substituted 2(H)-Pyran-2-ones. J Org Chem 2005; 70:1122-33. [PMID: 15704944 DOI: 10.1021/jo048213k] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Diels-Alder reactions of 3- and 5-halo-subsituted 2(H)-pyran-2-ones with both electron-rich and electron-deficient dienophiles afford stable and readily isolable bridged bicyclic lactone cycloadducts. These cycloadditions proceed with excellent regioselectivity and very good stereoselectivity. In contrast, Diels-Alder reactions of 4-halo-subsituted 2(H)-pyran-2-ones afford cycloadducts which are very prone to loss of bridging CO(2) and the subsequent formation of barrelenes ([2.2.2]cyclooctenes). Furthermore, these cycloadditions proceed with only moderate regio- and stereoselectivity. For both series of the 3- and 5-halo-subsituted 2(H)-pyran-2-ones and 4-halo-subsituted 2(H)-pyran-2-ones, the reactivity patterns do not significantly change between the halogens. The regio- and stereochemical preferences of the cycloadditions of halo-substituted 2(H)-pyran-2-ones are investigated computationally. Calculations were carried out on the transition states leading to the four possible regio- and stereoisomeric cycloadducts by using density functional theory (B3LYP/6-31G). These studies allow prediction of the regio- and stereoselectivity in these reactions which are broadly in line with experimental observations.
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Affiliation(s)
- Kamyar Afarinkia
- Department of Chemistry, King's College, Strand, London WC2R 2LS, United Kingdom
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14
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Afarinkia K, Bearpark MJ, Ndibwami A. Computational and experimental investigation of the Diels-Alder cycloadditions of 4-chloro-2(H)-pyran-2-one. J Org Chem 2003; 68:7158-66. [PMID: 12968865 DOI: 10.1021/jo0348827] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
4-Chloro-2(H)-pyran-2-one undergoes thermal Diels-Alder cycloaddition with electron-deficient dienophiles to afford, without any significant selectivity, 6-endo- and 5-endo-substituted bicyclic lactone cycloadducts. In contrast to 3- and 5-bromo-2(H)-pyran-2-one, 4-chloro-2(H)-pyran-2-one does not undergo thermal cycloadditions with electron-rich dienophiles. The regio- and stereochemical preferences of the cycloadditions of 4-chloro-2(H)-pyran-2-one and other related 2(H)-pyran-2-ones are investigated computationally. Calculations were carried out on the transition states leading to the four possible regio- and stereoisomeric cycloadducts using density functional theory (B3LYP/6-31G). These studies allow prediction of the regio- and stereoselectivity in these reactions which are in line with experimental observations.
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Affiliation(s)
- Kamyar Afarinkia
- Department of Chemistry, King's College, Strand, London WC2R 2LS, UK.
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Li C, Johnson RP, Porco JA. Total synthesis of the quinone epoxide dimer (+)-torreyanic acid: application of a biomimetic oxidation/electrocyclization/Diels-Alder dimerization cascade. J Am Chem Soc 2003; 125:5095-106. [PMID: 12708860 DOI: 10.1021/ja021396c] [Citation(s) in RCA: 128] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An asymmetric synthesis of the quinone epoxide dimer (+)-torreyanic acid (48) has been accomplished employing [4 + 2] dimerization of diastereomeric 2H-pyran monomers. Synthesis of the related monomeric natural product (+)-ambuic acid (2) has also been achieved which establishes the biosynthetic relationship between these two natural products. A tartrate-mediated nucleophilic epoxidation involving hydroxyl group direction facilitated the asymmetric synthesis of a key chiral quinone monoepoxide intermediate. Thermolysis experiments have also been conducted on a model dimer based on the torreyanic acid core structure and facile retro Diels-Alder reaction processes and equilibration of diastereomeric 2H-pyrans have been observed. Theoretical calculations of Diels-Alder transition states have been performed to evaluate alternative transition states for Diels-Alder dimerization of 2H-pyran quinone epoxide monomers and provide insight into the stereocontrol elements for these reactions.
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Affiliation(s)
- Chaomin Li
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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16
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Affiliation(s)
- Anil K Sadana
- Department of Chemistry, Rice University, Houston, Texas 77005-1892, USA
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