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Myers JT, Shivokevich PJ, Pienkos JA, Sabat M, Myers WH, Harman WD. Synthesis of 2-Substituted 1,2-Dihydronaphthalenes and 1,2-Dihydroanthracenes Using a Recyclable Molybdenum Dearomatization Agent. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00509] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeffery T. Myers
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Philip J. Shivokevich
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Jared A. Pienkos
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Michal Sabat
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - William H. Myers
- Department
of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - W. Dean Harman
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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Mongin F, Harrison-Marchand A. Mixed AggregAte (MAA): A Single Concept for All Dipolar Organometallic Aggregates. 2. Syntheses and Reactivities of Homo/HeteroMAAs. Chem Rev 2013; 113:7563-727. [DOI: 10.1021/cr3002966] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Florence Mongin
- Equipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Bât. 10A, Case 1003, Campus de Beaulieu, Avenue du Général Leclerc, 35042 Rennes Cédex, France
| | - Anne Harrison-Marchand
- Laboratoire COBRA de l′Université de Rouen, INSA de Rouen, CNRS, UMR 6014 & FR 3038, IRCOF, Rue Tesnière, 76821 Mont St Aignan Cédex, France
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Cannon JS, Frederich JH, Overman LE. Palladacyclic imidazoline-naphthalene complexes: synthesis and catalytic performance in Pd(II)-catalyzed enantioselective reactions of allylic trichloroacetimidates. J Org Chem 2012; 77:1939-51. [PMID: 22288535 DOI: 10.1021/jo2025724] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new family of air- and moisture-stable enantiopure C,N-palladacycles (PIN-acac complexes) were prepared in good overall yield in three steps from 2-iodo-1-naphthoic acid and enantiopure β-amino alcohols. Three of these PIN complexes were characterized by single-crystal X-ray analysis. As anticipated, the naphthalene and imidazoline rings of PIN-acac complexes 18a and 18b were canted significantly from planarity and projected the imidazoline substituents R(1) and R(2) on opposite faces of the palladium square plane. Fifteen PIN complexes were evaluated as catalysts for the rearrangement of prochiral (E)-allylic trichloroacetimidate 19 (eq 2) and the S(N)2' allylic substitution of acetic acid with prochiral (Z)-allylic trichloroacetimidate 23. Although these complexes were kinetically poor catalysts for the Overman rearrangement, they were good catalysts for the allylic substitution reaction, providing branched allylic esters in high yield. However, enantioselectivities were low to moderate and significantly less than that realized with palladacyclic complexes of the COP family. Computational studies support an anti-acetoxypalladation/syn-deoxypalladation mechanism analogous to that observed with COP catalysts. The computational study further suggests that optimizing steric influence in the vicinity of the carbon ligand of a chiral C,N-palladacycle, rather than near the nitrogen heterocycle, is the direction to pursue in future development of improved enantioselective catalysts of this motif.
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Affiliation(s)
- Jeffrey S Cannon
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
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Aissaoui R, Nourry A, Coquel A, Dao TTH, Derdour A, Helesbeux JJ, Duval O, Castanet AS, Mortier J. ortho-Lithium/Magnesium Carboxylate-Driven Aromatic Nucleophilic Substitution Reactions on Unprotected Naphthoic Acids. J Org Chem 2011; 77:718-24. [DOI: 10.1021/jo202017z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Regadia Aissaoui
- Unité de Chimie Organique
Moléculaire et Macromoléculaire (UMR 6011), Faculté
des Sciences, Université du Maine and CNRS, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
- Laboratoire de Synthèse
Organique Appliquée, Université d’Oran Es-Senia, Oran 31000, Algeria
| | - Arnaud Nourry
- Unité de Chimie Organique
Moléculaire et Macromoléculaire (UMR 6011), Faculté
des Sciences, Université du Maine and CNRS, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Ariane Coquel
- Unité de Chimie Organique
Moléculaire et Macromoléculaire (UMR 6011), Faculté
des Sciences, Université du Maine and CNRS, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
- Laboratoire SONAS, Faculté
de Pharmacie, Université d’Angers, 49100 Angers, France
| | - Thi Thanh Hà Dao
- Laboratoire SONAS, Faculté
de Pharmacie, Université d’Angers, 49100 Angers, France
| | - Aicha Derdour
- Laboratoire de Synthèse
Organique Appliquée, Université d’Oran Es-Senia, Oran 31000, Algeria
| | | | - Olivier Duval
- Laboratoire SONAS, Faculté
de Pharmacie, Université d’Angers, 49100 Angers, France
| | - Anne-Sophie Castanet
- Unité de Chimie Organique
Moléculaire et Macromoléculaire (UMR 6011), Faculté
des Sciences, Université du Maine and CNRS, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Jacques Mortier
- Unité de Chimie Organique
Moléculaire et Macromoléculaire (UMR 6011), Faculté
des Sciences, Université du Maine and CNRS, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
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Le TT, Chau NTT, Nguyen TT, Brien J, Thai TT, Nourry A, Castanet AS, Nguyen KPP, Mortier J. Evidence for a Trianion Intermediate in the Metalation of 4-Hydroxy-6,7-dimethoxy-8-methyl-2-naphthoic Acid. Methodology and Application to Racemic 5,5′-Didesisopropyl-5,5′-dialkylapogossypol Derivatives. J Org Chem 2010; 76:601-8. [DOI: 10.1021/jo102147s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tin Thanh Le
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Nguyet Trang Thanh Chau
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
- University of Ho Chi Minh City, École des Sciences naturelles, Laboratoire de Chimie Organique, 227/2 Nguyen van Cu. Arrondissement 5, Ho Chi Minh City, Viet Nam
| | - Tai Tan Nguyen
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Josselin Brien
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Trieu Tien Thai
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Arnaud Nourry
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Anne-Sophie Castanet
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Kim Phi Phung Nguyen
- University of Ho Chi Minh City, École des Sciences naturelles, Laboratoire de Chimie Organique, 227/2 Nguyen van Cu. Arrondissement 5, Ho Chi Minh City, Viet Nam
| | - Jacques Mortier
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
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Combined directed ortho-metalation, remote metalation, and Stille cross-coupling strategies. Concise stereoselective synthesis of polysubstituted 9H-fluoren-9-ones. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.122] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Nguyen TH, Chau NTT, Castanet AS, Nguyen KPP, Mortier J. First General, Direct, and Regioselective Synthesis of Substituted Methoxybenzoic Acids by Ortho Metalation. J Org Chem 2007; 72:3419-29. [PMID: 17391047 DOI: 10.1021/jo070082a] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New general methodology of value in aromatic chemistry based on ortho-metalation sites in o-, m-, and p-anisic acids (1-3) (Scheme 1) is described. The metalation can be selectively directed to either of the ortho positions by varying the base, metalation temperature, and exposure times. Metalation of o-anisic acid (1) with s-BuLi/TMEDA in THF at -78 degrees C occurs exclusively in the position adjacente to the carboxylate. On the other hand, a reversal of regioselectivity is observed with n-BuLi/t-BuOK. With LTMP at 0 degrees C, the two directors of m-anisic acid (2) function in concert to direct introduction of the metal between them while n-BuLi/t-BuOK removes preferentially the proton located ortho to the methoxy and para to the carboxylate (H-4). s-BuLi/TMEDA reacts with p-anisic acid (3) exclusively in the vicinity of the carboxylate. According to these methodologies, routes to very simple methoxybenzoic acids with a variety of functionalities that are not easily accessible by other means have been developed (Table 1).
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Affiliation(s)
- Thi-Huu Nguyen
- Université du Maine and CNRS, Unité de chimie organique moléculaire et macromoléculaire (UMR 6011), Faculté des sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
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Nguyen TH, Castanet AS, Mortier J. Directed Ortho-Metalation of Unprotected Benzoic Acids. Methodology and Regioselective Synthesis of Useful Contiguously 3- and 6-Substituted 2-Methoxybenzoic Acid Building Blocks. Org Lett 2006; 8:765-8. [PMID: 16468762 DOI: 10.1021/ol0530427] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] By treatment with s-BuLi/TMEDA at -78 degrees C, unprotected 2-methoxybenzoic acid is deprotonated exclusively in the position ortho to the carboxylate. A reversal of regioselectivity is observed when the acid is treated with n-BuLi/t-BuOK. These results are of general utility for the one-pot preparation of a variety of very simple 3- and 6-substituted 2-methoxybenzoic acids that are not easily accessible by conventional means. The potential usefulness of the method is demonstrated by the expedient synthesis of lunularic acid.
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Affiliation(s)
- Thi-Huu Nguyen
- Université du Maine and CNRS, Unité de Chimie Organique Moléculaire et Macromoléculaire (UMR 6011), Faculté des Sciences, avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
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The Expedient and Regioselective Metalation of Unprotected Biphenyl-2-, -3-, and -4-carboxylic Acids. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500469] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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