51
|
Ávila EP, Justo RMS, Gonçalves VP, Pereira AA, Diniz R, Amarante GW. Chiral Brønsted Acid-Catalyzed Stereoselective Mannich-Type Reaction of Azlactones with Aldimines. J Org Chem 2014; 80:590-4. [DOI: 10.1021/jo5024975] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eloah P. Ávila
- Chemistry Department, Federal University of Juiz de Fora, Cidade Universitária Martelos, Martelos, Juiz de Fora, MG, Brazil 36036-900
| | - Rodrigo M. S. Justo
- Chemistry Department, Federal University of Juiz de Fora, Cidade Universitária Martelos, Martelos, Juiz de Fora, MG, Brazil 36036-900
| | - Vanessa P. Gonçalves
- Chemistry Department, Federal University of Juiz de Fora, Cidade Universitária Martelos, Martelos, Juiz de Fora, MG, Brazil 36036-900
| | - Adriane A. Pereira
- Chemistry Department, Federal University of Juiz de Fora, Cidade Universitária Martelos, Martelos, Juiz de Fora, MG, Brazil 36036-900
| | - Renata Diniz
- Chemistry Department, Federal University of Juiz de Fora, Cidade Universitária Martelos, Martelos, Juiz de Fora, MG, Brazil 36036-900
| | - Giovanni W. Amarante
- Chemistry Department, Federal University of Juiz de Fora, Cidade Universitária Martelos, Martelos, Juiz de Fora, MG, Brazil 36036-900
| |
Collapse
|
52
|
Metz AE, Kozlowski MC. Recent Advances in Asymmetric Catalytic Methods for the Formation of Acyclic α,α-Disubstituted α-Amino Acids. J Org Chem 2014; 80:1-7. [DOI: 10.1021/jo502408z] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Alison E. Metz
- Department of Chemistry,
Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marisa C. Kozlowski
- Department of Chemistry,
Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
53
|
Bera K, Namboothiri INN. Asymmetric Synthesis of Quaternary α-Amino Acids and Their Phosphonate Analogues. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402178] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
54
|
Kim SG. Crystal structure of (E)-3-(5-bromo-2-hydroxy-phen-yl)acryl-aldehyde. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o1219-20. [PMID: 25484839 PMCID: PMC4257279 DOI: 10.1107/s1600536814023708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 10/28/2014] [Indexed: 11/10/2022]
Abstract
The title compound, C9H7BrO2, displays a trans configuration with respect to the C=C double bond and is essentially planar [maximum deviation from the least-squares plane through all non-H atoms = 0.056 (4) Å]. The vinylaldehyde group adopts an extended conformation wih a C—C—C—C torsion angle of 179.7 (4)°. In the crystal, molecules are linked by classical O—H⋯O and weak C—H⋯O hydrogen bonds into a three-dimensional supramolecular network.
Collapse
Affiliation(s)
- Sung-Gon Kim
- Department of Chemistry, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon 443-760, Republic of Korea
| |
Collapse
|
55
|
Zhang J, Liu X, Wu C, Zhang P, Chen J, Wang R. Organocatalyzed Asymmetric 1,4-Addition of Azlactones to α,β-Unsaturated Trichloromethyl Ketones: Synthesis of α,α-Disubstituted α-Amino Acid Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403158] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
56
|
Bartusik D, Aebisher D. 19F applications in drug development and imaging – a review. Biomed Pharmacother 2014; 68:813-7. [DOI: 10.1016/j.biopha.2014.07.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 07/08/2014] [Indexed: 12/31/2022] Open
|
57
|
Ben Ayed K, Beauchard A, Poisson JF, Py S, Laurent MY, Martel A, Ammar H, Abid S, Dujardin G. Asymmetric Access to α-Substituted Functional Aspartic Acid Derivatives by a [3+2] Strategy Employing a Chiral Dienophile. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301739] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
58
|
Zhang X, Cividino P, Poisson JF, Shpak-Kraievskyi P, Laurent MY, Martel A, Dujardin G, Py S. Asymmetric Synthesis of α,α-Disubstituted Amino Acids by Cycloaddition of (E)-Ketonitrones with Vinyl Ethers. Org Lett 2014; 16:1936-9. [DOI: 10.1021/ol500483t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xiaofei Zhang
- Département
de Chimie Moléculaire (SERCO) UMR 5250, ICMG FR-2607, CNRS-Université Joseph Fourier, BP 53, 38041 Grenoble
Cedex 09, France
- LUNAM Université du Maine, IMMM UMR 6283 CNRS, Equipe Méthodologie et Synthèse Organique, 72085 Le Mans Cedex 09, France
| | - Pascale Cividino
- Département
de Chimie Moléculaire (SERCO) UMR 5250, ICMG FR-2607, CNRS-Université Joseph Fourier, BP 53, 38041 Grenoble
Cedex 09, France
| | - Jean-François Poisson
- Département
de Chimie Moléculaire (SERCO) UMR 5250, ICMG FR-2607, CNRS-Université Joseph Fourier, BP 53, 38041 Grenoble
Cedex 09, France
| | - Pavlo Shpak-Kraievskyi
- LUNAM Université du Maine, IMMM UMR 6283 CNRS, Equipe Méthodologie et Synthèse Organique, 72085 Le Mans Cedex 09, France
| | - Mathieu Y. Laurent
- LUNAM Université du Maine, IMMM UMR 6283 CNRS, Equipe Méthodologie et Synthèse Organique, 72085 Le Mans Cedex 09, France
| | - Arnaud Martel
- LUNAM Université du Maine, IMMM UMR 6283 CNRS, Equipe Méthodologie et Synthèse Organique, 72085 Le Mans Cedex 09, France
| | - Gilles Dujardin
- LUNAM Université du Maine, IMMM UMR 6283 CNRS, Equipe Méthodologie et Synthèse Organique, 72085 Le Mans Cedex 09, France
| | - Sandrine Py
- Département
de Chimie Moléculaire (SERCO) UMR 5250, ICMG FR-2607, CNRS-Université Joseph Fourier, BP 53, 38041 Grenoble
Cedex 09, France
| |
Collapse
|
59
|
Marco-Martínez J, Reboredo S, Izquierdo M, Marcos V, López JL, Filippone S, Martín N. Enantioselective cycloaddition of münchnones onto [60]fullerene: organocatalysis versus metal catalysis. J Am Chem Soc 2014; 136:2897-904. [PMID: 24483247 PMCID: PMC3954715 DOI: 10.1021/ja500071k] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
![]()
Novel
chiral catalytic systems based on both organic compounds
and metal salts have been developed for the enantioselective [3 +
2] cycloaddition of münchnones onto fullerenes and olefins.
These two different approaches proved to be efficient and complementary
in the synthesis of optically active pyrrolino[3,4:1,2][60]fullerenes
with high levels of enantiomeric excess and moderate to good conversions.
Further functionalization of the pyrrolinofullerene carboxylic acid
derivatives has been carried out by esterification and amidation reactions.
Collapse
Affiliation(s)
- Juan Marco-Martínez
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense , E-28040 Madrid, Spain
| | | | | | | | | | | | | |
Collapse
|
60
|
Esteban F, Alfaro R, Yuste F, Parra A, Ruano JLG, Alemán J. [8+2] Formal Cycloaddition Reactions of Tropones with Azlactones under Brønsted Acid Catalysis and Synthesis of α-(2-Tropyl), α-Alkyl α-Amino Acids. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301774] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
61
|
da Silva RC, da Silva GP, Sangi DP, Pontes JGDM, Ferreira AG, Corrêa AG, Paixão MW. 1,1-Diamino-2-nitroethylenes as excellent hydrogen bond donor organocatalysts in the Michael addition of carbon-based nucleophiles to β-nitrostyrenes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
62
|
Trost BM, Czabaniuk LC. Palladium-Catalyzed Asymmetric Benzylation of Azlactones. Chemistry 2013; 19:15210-8. [DOI: 10.1002/chem.201302390] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Indexed: 11/09/2022]
|
63
|
Sun W, Zhu G, Wu C, Li G, Hong L, Wang R. Organocatalytic Diastereo- and Enantioselective 1,3-Dipolar Cycloaddition of Azlactones and Methyleneindolinones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302831] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
64
|
Sun W, Zhu G, Wu C, Li G, Hong L, Wang R. Organocatalytic Diastereo- and Enantioselective 1,3-Dipolar Cycloaddition of Azlactones and Methyleneindolinones. Angew Chem Int Ed Engl 2013; 52:8633-7. [DOI: 10.1002/anie.201302831] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 05/20/2013] [Indexed: 11/11/2022]
|
65
|
Geng ZC, Chen X, Zhang JX, Li N, Chen J, Huang XF, Zhang SY, Tao JC, Wang XW. Asymmetric Michael/Aromatization Reaction of Azlactones to α,β-Unsaturated Pyrazolones with C-4 Regioselectivity Catalyzed by an Isosteviol-Derived Thiourea Organocatalyst. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300524] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
66
|
Li T, Zhu J, Wu D, Li X, Wang S, Li H, Li J, Wang W. A Strategy Enabling Enantioselective Direct Conjugate Addition of Inert Aryl Methane Nucleophiles to Enals with a Chiral Amine Catalyst under Mild Conditions. Chemistry 2013; 19:9147-50. [DOI: 10.1002/chem.201300304] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Indexed: 12/20/2022]
|
67
|
Dell'Amico L, Albrecht Ł, Naicker T, Poulsen PH, Jørgensen KA. Beyond classical reactivity patterns: shifting from 1,4- to 1,6-additions in regio- and enantioselective organocatalyzed vinylogous reactions of olefinic lactones with enals and 2,4-dienals. J Am Chem Soc 2013; 135:8063-70. [PMID: 23654285 DOI: 10.1021/ja4029928] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Organocatalysis is shown to expand the classical reactivity pattern for conjugate addition reactions. It is demonstrated that the site selectivity can be extended from 1,4- to 1,6-additions for the enantioselective vinylogous additions of methyl-substituted vinylogous lactones to enals and 2,4-dienals. This novel reactivity is demonstrated for methyl-substituted olefinic azlactones and butyrolactones. Their synthetic potential is first highlighted by the development of the organocatalytic regioselective vinylogous 1,4-addition to enals which proceeds with a very high level of double-bond geometry control and excellent enantioselectivity. The concept is developed further for the unprecedented intermolecular enantioselective organocatalyzed vinylogous 1,6-addition to linear 2,4-dienals, by which the site selectivity of the process is extended from the β-position to the remote δ-position of the 2,4-dienal. The organocatalyst controls the newly generated stereocenter six bonds away from the stereocenter of the catalyst with a high level of enantiocontrol, and the products are obtained with full control of double-bonds configuration. The scope of these new reaction concepts is demonstrated for a series of aliphatic and aryl-substituted enals and 2,4-dienals undergoing enantioselective vinylogous reactions with methyl-substituted olefinic azlactones and butyrolactones. Furthermore, mechanistic considerations are presented which can account for the change from 1,4- to 1,6-selectivity. Finally, a number of different transformations of the optically active 1,4- and 1,6-addition products are demonstrated.
Collapse
Affiliation(s)
- Luca Dell'Amico
- Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | | | | | | | | |
Collapse
|
68
|
Weber M, Frey W, Peters R. Catalytic Asymmetric Synthesis of Spirocyclic Azlactones by a Double Michael-Addition Approach. Chemistry 2013; 19:8342-51. [DOI: 10.1002/chem.201300224] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Indexed: 12/12/2022]
|
69
|
Ban SR, Zhu XX, Zhang ZP, Xie HY, Li QS. Benzoylthiourea-Pyrrolidine as Another Bifunctional Organocatalyst: Highly Enantioselective Michael Addition of Cyclohexanone to Nitroolefins. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300225] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
70
|
Banerjee S, Wiggins WJ, Geoghegan JL, Anthony CT, Woltering EA, Masterson DS. Novel synthesis of various orthogonally protected Cα-methyllysine analogues and biological evaluation of a Vapreotide analogue containing (S)-α-methyllysine. Org Biomol Chem 2013; 11:6307-19. [DOI: 10.1039/c3ob41282b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
71
|
Cai CW, Zhu XL, Wu S, Zuo ZL, Yu LL, Qin DB, Liu QZ, Jing LH. Organocatalytic Asymmetric Michael Addition of Oxazolones to Arylsulfonyl Indoles: Facile Access tosyn-Configured α,β-Disubstituted Tryptophan Derivatives. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201335] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
72
|
Weber M, Peters R. Pd(II)-Catalyzed Regio-, Enantio-, and Diastereoselective 1,4-Addition of Azlactones Formed in Situ From Racemic Unprotected Amino Acids and Acetic Anhydride. J Org Chem 2012. [DOI: 10.1021/jo302177t] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Manuel Weber
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569
Stuttgart, Germany
| |
Collapse
|
73
|
Weber M, Jautze S, Frey W, Peters R. Bispalladacycle-Catalyzed Michael Addition of In Situ Formed Azlactones to Enones. Chemistry 2012; 18:14792-804. [DOI: 10.1002/chem.201202455] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Indexed: 01/05/2023]
|
74
|
Fernández M, Uria U, Vicario JL, Reyes E, Carrillo L. Enantioselective conjugate addition of donor-acceptor hydrazones to α,β-unsaturated aldehydes through formal diaza-ene reaction: access to 1,4-dicarbonyl compounds. J Am Chem Soc 2012; 134:11872-5. [PMID: 22780683 DOI: 10.1021/ja3041042] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Donor-acceptor monosubstituted hydrazones participate as suitable reagents able to undergo an enantioselective formal diaza-ene reaction with α,β-unsaturated aldehydes under chiral secondary amine catalysis. This constitutes a new approach for the enantioselective conjugate addition of hydrazones to enals under metal-free conditions and leads to the formation of γ-hydrazono carboxylic acids after oxidation/[1,3]-H shift. The methodology is also useful for the synthesis of enantioenriched β-substituted α-keto-1,5-diesters by using the hydrazone moiety as a masked carbonyl group.
Collapse
Affiliation(s)
- Maitane Fernández
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), P.O. Box 644, E-48080 Bilbao, Spain
| | | | | | | | | |
Collapse
|
75
|
Weber M, Frey W, Peters R. Catalytic Asymmetric Synthesis of Functionalized α,α-Disubstituted α-Amino Acid Derivatives from Racemic Unprotected α-Amino Acids via in-situ Generated Azlactones. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200085] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
76
|
Reboredo S, Reyes E, Vicario JL, Badía D, Carrillo L, de Cózar A, Cossío FP. An Amine-Catalyzed Enantioselective [3+2] Cycloaddition of Azomethine Ylides and α,β-Unsaturated Aldehydes: Applications and Mechanistic Implications. Chemistry 2012; 18:7179-88. [DOI: 10.1002/chem.201103015] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 01/25/2012] [Indexed: 11/11/2022]
|
77
|
Breistein P, Johansson J, Ibrahem I, Lin S, Deiana L, Sun J, Cordova A. One-Step Catalytic Enantioselective α-Quaternary 5-Hydroxyproline Synthesis: An Asymmetric Entry to Highly Functionalized α-Quaternary Proline Derivatives. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100911] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
78
|
Shi SH, Huang FP, Zhu P, Dong ZW, Hui XP. Synergistic Chiral Ion Pair Catalysts for Asymmetric Catalytic Synthesis of Quaternary α,β-Diamino Acids. Org Lett 2012; 14:2010-3. [DOI: 10.1021/ol300510b] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Shi-Hui Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Fu-Ping Huang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ping Zhu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhen-Wen Dong
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xin-Ping Hui
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| |
Collapse
|
79
|
Trost BM, Czabaniuk LC. Benzylic Phosphates as Electrophiles in the Palladium-Catalyzed Asymmetric Benzylation of Azlactones. J Am Chem Soc 2012; 134:5778-81. [DOI: 10.1021/ja301461p] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080,
United States
| | - Lara C. Czabaniuk
- Department of Chemistry, Stanford University, Stanford, California 94305-5080,
United States
| |
Collapse
|
80
|
Zhang WQ, Cheng LF, Yu J, Gong LZ. A Chiral Bis(betaine) Catalyst for the Mannich Reaction of Azlactones and Aliphatic Imines. Angew Chem Int Ed Engl 2012; 51:4085-8. [DOI: 10.1002/anie.201107741] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 01/06/2012] [Indexed: 11/09/2022]
|
81
|
Zhang WQ, Cheng LF, Yu J, Gong LZ. A Chiral Bis(betaine) Catalyst for the Mannich Reaction of Azlactones and Aliphatic Imines. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107741] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
82
|
Jensen KL, Dickmeiss G, Jiang H, Albrecht Ł, Jørgensen KA. The diarylprolinol silyl ether system: a general organocatalyst. Acc Chem Res 2012; 45:248-64. [PMID: 21848275 DOI: 10.1021/ar200149w] [Citation(s) in RCA: 601] [Impact Index Per Article: 50.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The past few decades have witnessed some of the most important and revolutionizing advances in the field of asymmetric catalysis. Chemists no longer rely solely on natural sources as the starting point of their synthetic strategy, as in chiral pool or auxiliary-based synthesis. Instead, naturally occurring chiral motifs are selected and, either unchanged or after modification, used in substoichiometric amounts as chiral catalysts or ligands. In this way, they effectively transfer their chirality to prochiral substrates, thereby rapidly amplifying and diversifying the arsenal of useful chiral building blocks available to the synthetic community. A long-standing goal in the pursuit of new catalytic systems is the discovery of general catalysts. Ideally, such catalytic systems should be capable of promoting a large number of enantioselective reactions, via multiple modes of activation, with good substrate tolerance and high stereoselectivity. In this Account, we describe the synthetic usefulness, efficiency, selectivity, and robustness of the diarylprolinol silyl ether system as the catalyst in various reactions of aldehydes. Based on the diarylprolinol silyl ether system, several studies on enamine-mediated transformations of saturated aldehydes have resulted in the introduction of different functionalities into the α-position of aldehydes in a highly stereoselective manner. This HOMO-activation concept was later extended to include α,β-unsaturated aldehydes, which after condensation with the aminocatalyst generate a dienamine species capable of undergoing stereoselective Diels-Alder-type reactions. As a result, the effective functionalization of the γ-position of the aldehyde is achieved. Recently, the activation principle was further developed to include 2,4-dienals, which form trienamine intermediates upon condensation with the aminocatalyst. The trienamines effectively react with carbon-centered dienophiles, forming aldehyde products having up to four contiguous stereocenters. Because of the concerted nature of the reaction and the efficient catalyst shielding of the β-position, the stereoinduction is achieved at the remote ε-position of the original aldehyde. Complementary to the enamine-mediated activations, α,β-unsaturated aldehydes can also be efficiently functionalized by applying the diarylprolinol silyl ether system via conjugate addition through iminium-ion-mediated processes, that is, LUMO-activation. In such reactions, the aminocatalyst not only effectively shields one of the enantiotopic faces of the enal, it also ensures excellent chemoselectivity, affording 1,4-adducts as the only products. Several different carbon and heteroatom nucleophiles can be added in a highly stereoselective fashion. The ability of the catalysts to participate in various enamine- and iminium-ion-mediated processes also makes them ideal for the sequential addition of nucleophiles and electrophiles in a cascade manner. These cascade reactions thereby afford access to products having at least two stereocenters. In the years to come, the diarylprolinol silyl ether catalysts will probably maintain their prominent position as general catalysts in the field of aminocatalysis. Moreover, recent efforts devoted to mechanistic studies might soon engender further advances with this versatile catalytic system, particularly in the areas of activation modes, catalyst loadings, and industrial applications.
Collapse
Affiliation(s)
- Kim L. Jensen
- Center for Catalysis, Department of Chemistry, Aarhus University, Denmark
| | - Gustav Dickmeiss
- Center for Catalysis, Department of Chemistry, Aarhus University, Denmark
| | - Hao Jiang
- Center for Catalysis, Department of Chemistry, Aarhus University, Denmark
| | - Łukasz Albrecht
- Center for Catalysis, Department of Chemistry, Aarhus University, Denmark
| | | |
Collapse
|
83
|
Alba ANR, Valero G, Calbet T, Font-Bardía M, Moyano A, Rios R. Enantioselective addition of oxazolones to maleimides. An easy entry to quaternary aminoacids. NEW J CHEM 2012. [DOI: 10.1039/c1nj20659a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
84
|
Zhu TS, Xu MH. Efficient synthesis of optically active α-quaternary amino acids by highly diastereoselective [2,3]-rearrangement of allylic ammonium ylides. Chem Commun (Camb) 2012; 48:7274-6. [DOI: 10.1039/c2cc33027j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
85
|
|
86
|
Boukattaya F, Stanovych A, Setzer P, Abid S, Ammar H, Pearson-Long MSM, Bertus P. Simple and convenient access to α,α,α-trisubstituted amides by double addition of Grignard reagents to acyl cyanohydrins. Chem Commun (Camb) 2012; 48:8655-7. [DOI: 10.1039/c2cc34841a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
87
|
Tarí S, Avila A, Chinchilla R, Nájera C. Enantioselective quaternization of 4-substituted oxazol-5-(4H)-ones using recoverable Cinchona-derived dimeric ammonium salts as phase-transfer organocatalysts. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.01.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
88
|
Terada M, Moriya K, Kanomata K, Sorimachi K. Chiral Brønsted Acid Catalyzed Stereoselective Addition of Azlactones to 3-Vinylindoles for Facile Access to Enantioenriched Tryptophan Derivatives. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105562] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
89
|
Terada M, Moriya K, Kanomata K, Sorimachi K. Chiral Brønsted Acid Catalyzed Stereoselective Addition of Azlactones to 3-Vinylindoles for Facile Access to Enantioenriched Tryptophan Derivatives. Angew Chem Int Ed Engl 2011; 50:12586-90. [DOI: 10.1002/anie.201105562] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 09/23/2011] [Indexed: 11/06/2022]
|
90
|
Ban SR, Xie HY, Zhu XX, Li QS. Highly Enantioselective Michael Addition of Ketones to Nitroolefins with a Pyrrolidine-Based Phthalimide as an Enamine-Type Organocatalyst. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101093] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
91
|
Righi M, Bartoccini F, Lucarini S, Piersanti G. Organocatalytic synthesis of α-quaternary amino acid derivatives via aza-Friedel–Crafts alkylation of indoles with simple α-amidoacrylates. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.08.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
92
|
De CK, Mittal N, Seidel D. A Dual-Catalysis Approach to the Asymmetric Steglich Rearrangement and Catalytic Enantioselective Addition of O-Acylated Azlactones to Isoquinolines. J Am Chem Soc 2011; 133:16802-5. [DOI: 10.1021/ja208156z] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Chandra Kanta De
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Nisha Mittal
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| |
Collapse
|
93
|
Roiban GD, Serrano E, Soler T, Aullón G, Grosu I, Cativiela C, Martínez M, Urriolabeitia EP. Regioselective orthopalladation of (Z)-2-aryl-4-arylidene-5(4H)-oxazolones: scope, kinetico-mechanistic, and density functional theory studies of the C-H bond activation. Inorg Chem 2011; 50:8132-43. [PMID: 21806046 DOI: 10.1021/ic200564d] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Orthopalladated complexes derived from (Z)-2-aryl-4-arylidene-5(4H)-oxazolones have been prepared by reaction of the oxazolone with palladium acetate in acidic medium. The reaction is regioselective, only the ortho C-H bond of the arylidene ring being activated, producing a six-membered ring. The scope and reaction conditions of the orthopalladation are dependent on the acidity of the solvent. In CF(3)CO(2)H a large number of oxazolones can be metalated under mild conditions. As acidity decreases a lesser number of oxazolones can be efficiently palladated and harsher conditions must be used to achieve similar yields. The C-H bond activation in acidic medium agrees with an ambiphilic mechanism, as determined from kinetic measurements at variable temperature and pressure for different oxazolones substituted at the arylidene ring. The mechanism has been confirmed by density functional theory (DFT) calculations, where the formation of the six-membered ring is shown to be favored from both a kinetic and a thermodynamic perspective. In addition, the dependence of the reaction rate on the acidity of the medium has also been accounted for via a fine-tuning between the C-H agostic precoordination and the proton abstraction reaction in the overall process occurring on coordinatively saturated [Pd(κ(N)-oxazolone)(RCO(2)H)(3)](2+).
Collapse
Affiliation(s)
- Gheorghe-Doru Roiban
- Organic Chemistry Department, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028, Cluj-Napoca, Romania
| | | | | | | | | | | | | | | |
Collapse
|
94
|
Núñez-Villanueva D, Bonache MÁ, Infantes L, García-López MT, Martín-Martínez M, González-Muñiz R. Quaternary α,α-2-Oxoazepane α-Amino Acids: Synthesis from Ornithine-Derived β-Lactams and Incorporation into Model Dipeptides. J Org Chem 2011; 76:6592-603. [DOI: 10.1021/jo200894d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - M. Ángeles Bonache
- Instituto de Química Médica (IQM-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Lourdes Infantes
- Instituto de Química Física Rocasolano (IQFR-CSIC), Serrano 119, 28006 Madrid, Spain
| | | | | | | |
Collapse
|
95
|
Jiang H, Gschwend B, Albrecht Ł, Hansen SG, Jørgensen KA. Asymmetric trienamine catalysis for the construction of structurally rigid cyclic α,α-disubstituted amino acid derivatives. Chemistry 2011; 17:9032-6. [PMID: 21744409 DOI: 10.1002/chem.201101539] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Indexed: 11/05/2022]
Affiliation(s)
- Hao Jiang
- Center for Catalysis, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | | | | | | | | |
Collapse
|
96
|
Maltsev OV, Chizhov AO, Zlotin SG. Chiral Ionic Liquid/ESI‐MS Methodology as an Efficient Tool for the Study of Transformations of Supported Organocatalysts: Deactivation Pathways of Jørgensen–Hayashi‐Type Catalysts in Asymmetric Michael Reactions. Chemistry 2011; 17:6109-17. [DOI: 10.1002/chem.201100388] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Oleg V. Maltsev
- N.D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp., 47 (Russian Federation), Fax: (+7) 499‐135‐53‐28
- Department of Technology of Organic Compounds, D.I. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Miusskaya pl., 9 (Russian Federation)
| | - Alexander O. Chizhov
- N.D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp., 47 (Russian Federation), Fax: (+7) 499‐135‐53‐28
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp., 47 (Russian Federation), Fax: (+7) 499‐135‐53‐28
| |
Collapse
|
97
|
Ying Y, Chai Z, Wang HF, Li P, Zheng CW, Zhao G, Cai YP. Bifunctional cinchona alkaloids-catalyzed asymmetric [4+2] cycloaddition reaction of β,γ-unsaturated α-keto esters with oxazolones. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.069] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
98
|
Ajitha MJ, Suresh CH. Role of stereoelectronic features of imine and enamine in (S)-proline catalyzed mannich reaction of acetaldehyde: An in silico study. J Comput Chem 2011; 32:1962-70. [DOI: 10.1002/jcc.21780] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Revised: 01/10/2011] [Accepted: 02/02/2011] [Indexed: 01/30/2023]
|
99
|
Fustero S, Sánchez-Roselló M, Báez C, del Pozo C, García Ruano JL, Alemán J, Marzo L, Parra A. Asymmetric synthesis of quaternary α-amino acid derivatives and their fluorinated analogues. Amino Acids 2011; 41:559-73. [DOI: 10.1007/s00726-011-0881-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 03/04/2011] [Indexed: 10/18/2022]
|
100
|
Melhado AD, Amarante GW, Wang ZJ, Luparia M, Toste FD. Gold(I)-catalyzed diastereo- and enantioselective 1,3-dipolar cycloaddition and Mannich reactions of azlactones. J Am Chem Soc 2011; 133:3517-27. [PMID: 21341677 PMCID: PMC3056178 DOI: 10.1021/ja1095045] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Azlactones participate in stereoselective reactions with electron-deficient alkenes and N-sulfonyl aldimines to give products of 1,3-dipolar cycloaddition and Mannich addition reactions, respectively. Both of these reactions proceed with good to excellent diastereo- and enantioselectivity using a single class of gold catalysts, namely C(2)-symmetric bis(phosphinegold(I) carboxylate) complexes. The development of the azlactone Mannich reaction to provide fully protected anti-α,β-diamino acid derivatives is described. 1,3-Dipolar cycloaddition reactions of several acyclic 1,2-disubstituted alkenes and the chemistry of the resultant cycloadducts are examined to probe the stereochemical course of this reaction. Reaction kinetics and tandem mass spectrometry studies of both the cycloaddition and Mannich reactions are reported. These studies support a mechanism in which the gold complexes catalyze addition reactions through nucleophile activation rather than the more typical activation of the electrophilic reaction component.
Collapse
Affiliation(s)
- Asa D. Melhado
- Department of Chemistry, University of California, Berkeley, California, 94720
| | | | - Z. Jane Wang
- Department of Chemistry, University of California, Berkeley, California, 94720
| | - Marco Luparia
- Department of Chemistry, University of California, Berkeley, California, 94720
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, California, 94720
| |
Collapse
|