1
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Li YH, Chen JH, Yang Z. Exo-Selective Diels-Alder Reactions. Chemistry 2024; 30:e202304371. [PMID: 38412422 DOI: 10.1002/chem.202304371] [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: 12/30/2023] [Indexed: 02/29/2024]
Abstract
The Diels-Alder reaction stands as one of the most pivotal transformations in organic chemistry. Its efficiency, marked by the formation of two carbon-carbon bonds and up to four new stereocenters in a single step, underscores its versatility and indispensability in synthesizing natural products and pharmaceuticals. The most significant stereoselectivity feature is the "endo rule". While this rule underpins the predictability of the stereochemical outcomes, it also underscores the challenges in achieving the opposite diastereoselectivity, making the exo-Diels-Alder reactions often considered outliers. This review delves into recent examples of exo-Diels-Alder reactions, shedding light on the factors inverting the intrinsic tendency. We explore the roles of steric, electrostatic, and orbital interactions, as well as thermodynamic equilibriums in influencing exo/endo selectivity. Furthermore, we illustrate strategies to manipulate these factors, employing approaches such as bulky substituents, s-cis conformations, transient structural constraints, and innovative control physics. Through these analyses, our aim is to provide a comprehensive understanding of how to predict and design exo-Diels-Alder reactions, paving the way for new diastereoselective catalyst systems and expanding the chemical scope of Diels-Alder reactions.
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Affiliation(s)
- Yuan-He Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Jia-Hua Chen
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Zhen Yang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055
- Shenzhen Bay Laboratory, Shenzhen, 518067, China
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2
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Wang CJ, Meng HJ, Tang Y, Chen J, Zhou L. Aromatic Amine and Chiral Phosphoric Acid Synergistic Catalyzed Cascade Reaction of Alkynylnaphthols with Aldehydes. Org Lett 2024; 26:1489-1494. [PMID: 38358098 DOI: 10.1021/acs.orglett.4c00172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
A novel approach using aromatic amines and chiral phosphoric acids in a synergistic catalytic cascade reaction of 2-alkynylnaphthols with aldehydes has been established. This method offers a direct route to preparing flavanone analogues with excellent stereoselectivity. Mechanistic studies reveal a sequential process involving addition, elimination, cyclization, and hydrolysis in which aromatic amines and chiral phosphoric acids play key roles via imine-enamine and hydrogen bonding models.
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Affiliation(s)
- Chuan-Jin Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Hao-Jie Meng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Yue Tang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
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3
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Kaasik M, Chen PP, Ričko S, Jørgensen KA, Houk KN. Asymmetric [4 + 2], [6 + 2], and [6 + 4] Cycloadditions of Isomeric Formyl Cycloheptatrienes Catalyzed by a Chiral Diamine Catalyst. J Am Chem Soc 2023; 145:23874-23890. [PMID: 37862136 DOI: 10.1021/jacs.3c09551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
Novel asymmetric aminocatalytic cycloadditions are described between formyl cycloheptatrienes and 6,6-dimethylfulvene that lead to [4 + 2], [6 + 2], and [4 + 6] cycloadducts. The unprecedented reaction course is dependent on the position of the formyl functionality in the cycloheptatriene core, and each formyl cycloheptatriene isomer displays a distinct reactivity pattern. The formyl cycloheptatriene isomers are activated by a chiral primary diamine catalyst, and the activation mode is dependent on the position of the formyl functionality relative to the cycloheptatriene core. The [4 + 2] and [6 + 2] cycloadducts are formed via rare iminocatalytic inverse electron-demand cycloadditions, while the [4 + 6] cycloadduct is formed by a normal electron-demand cycloaddition. The reactivity displayed by the different formyl cycloheptatrienes was investigated by DFT calculations. These computational studies account for the different reaction paths for the three isomeric formyl cycloheptatrienes. The aminocatalytic [4 + 2], [6 + 2], and [4 + 6] cycloadditions proceed by stepwise processes, and the interplay between conjugation, substrate distortion, and dispersive interactions between the fulvene and aminocatalyst mainly defines the outcome of each cycloaddition.
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Affiliation(s)
- Mikk Kaasik
- Department of Chemistry, Aarhus University, DK-80000 Aarhus C, Denmark
| | - Pan-Pan Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Sebastijan Ričko
- Department of Chemistry, Aarhus University, DK-80000 Aarhus C, Denmark
- Aarhus Institute of Advanced Studies, Aarhus University, DK-8000 Aarhus C, Denmark
| | | | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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4
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Bondzić BP, Daskalakis K, Taniguchi T, Monde K, Hayashi Y. Stereoselective Construction of Fluorinated Quaternary Stereogenic Centers via an Organocatalytic Asymmetric exo-Selective Diels-Alder Reaction in the Presence of Water. Org Lett 2022; 24:7455-7460. [PMID: 36190808 DOI: 10.1021/acs.orglett.2c03043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A catalytic, asymmetric Diels-Alder reaction of α-fluoro α,β-unsaturated aldehydes and cyclopentadiene was developed using diarylprolinol silyl ether as an organocatalyst. The reaction proceeds in toluene with trifluoroacetic acid as an additive (condition A). Perchloric acid salt of diarylprolinol silyl ether also promotes the reaction using water as a reaction medium (condition B). In both cases, excellent exo-selectivity and enantioselectivity were obtained with generation of a fluorinated quaternary chiral center.
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Affiliation(s)
- Bojan P Bondzić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Njegoševa 12, 11 000 Belgrade, Serbia
| | - Konstantinos Daskalakis
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Kenji Monde
- Frontier Research Center for Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
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5
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Komine K, Urayama Y, Hosaka T, Fukuda H, Hatakeyama S, Ishihara J. New entry to the enantioselective formation of substituted cyclohexenes bearing an all-carbon quaternary stereogenic center. Chirality 2020; 32:273-281. [PMID: 31957912 DOI: 10.1002/chir.23173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 11/07/2022]
Abstract
Enantioselective formation of cyclohexene derivatives bearing an all-carbon quaternary stereogenic center is described. The racemic cyclohexenes are readily transformed to chiral substituted cyclohexenes in good yield with excellent enantioselectivity and diastereoselectivity by a palladium-mediated deracemization. The resulting products are promising synthetic intermediates of biologically active natural products. This protocol provides us with a new entry to the concise and scalable synthesis of multifunctionalized compounds.
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Affiliation(s)
- Keita Komine
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yasuhiro Urayama
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Taku Hosaka
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Hayato Fukuda
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | | | - Jun Ishihara
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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6
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Džambaski Z, Tzaras D, Lee S, Kokotos CG, Bondzic BP. Enantioselective Organocatalytic Enamine C−H Oxidation/Diels‐ Alder Reaction. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zdravko Džambaski
- Center for Chemistry, ICTM instituteUniversity of Belgrade Njegoseva 12 11 000 Belgrade Serbia
| | - Dimitrios‐Ioannis Tzaras
- Laboratory of Organic Chemistry, Departmentof ChemistryNational and Kapodistrian University of Athens, Panepistimiopolis 15771 Athens Greece
| | - Sunggi Lee
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Christoforos G. Kokotos
- Laboratory of Organic Chemistry, Departmentof ChemistryNational and Kapodistrian University of Athens, Panepistimiopolis 15771 Athens Greece
| | - Bojan P. Bondzic
- Center for Chemistry, ICTM instituteUniversity of Belgrade Njegoseva 12 11 000 Belgrade Serbia
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7
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A multi-substrate screening approach for the identification of a broadly applicable Diels-Alder catalyst. Nat Commun 2019; 10:770. [PMID: 30770804 PMCID: PMC6377681 DOI: 10.1038/s41467-019-08374-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/08/2019] [Indexed: 11/09/2022] Open
Abstract
When developing a synthetic methodology, chemists generally optimize a single substrate and then explore the substrate scope of their method. This approach has led to innumerable and widely-used chemical reactions. However, it frequently provides methods that only work on model substrate-like compounds. Perhaps worse, reaction conditions that would enable the conversion of other substrates may be missed. We now show that a different approach, originally proposed by Kagan, in which a collection of structurally distinct substrates are evaluated in a single reaction vessel, can not only provide information on the substrate scope at a much earlier stage in methodology development, but even lead to a broadly applicable synthetic methodology. Using this multi-substrate screening approach, we have identified an efficient and stereoselective imidodiphosphorimidate organocatalyst for scalable Diels-Alder reactions of cyclopentadiene with different classes of α,β-unsaturated aldehydes.
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8
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Sonsona IG, Marqués-López E, Gimeno MC, Herrera RP. First aromatic amine organocatalysed activation of α,β-unsaturated ketones. NEW J CHEM 2019. [DOI: 10.1039/c9nj02392e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of a chiral aromatic amine used to activate α,β-unsaturated ketones in aminocatalysis.
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Affiliation(s)
- Isaac G. Sonsona
- Departamento de Química Orgánica
- Laboratorio de Organocatálisis Asimétrica
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- (CSIC-Universidad de Zaragoza)
- E-50009 Zaragoza
| | - Eugenia Marqués-López
- Departamento de Química Orgánica
- Laboratorio de Organocatálisis Asimétrica
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- (CSIC-Universidad de Zaragoza)
- E-50009 Zaragoza
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) (CSIC-Universidad de Zaragoza)
- E-50009 Zaragoza
- Spain
| | - Raquel P. Herrera
- Departamento de Química Orgánica
- Laboratorio de Organocatálisis Asimétrica
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- (CSIC-Universidad de Zaragoza)
- E-50009 Zaragoza
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9
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Häggman NO, Zank B, Jun H, Kaldre D, Gleason JL. Diazepane Carboxylates as Organocatalysts in the Diels-Alder Reaction of α-Substituted Enals. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Nicklas O. Häggman
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Benjamin Zank
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - HyunJune Jun
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Dainis Kaldre
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
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10
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Lv J, Zhang Q, Cai M, Han Y, Luo S. Aromatic Aminocatalysis. Chem Asian J 2018; 13:740-753. [PMID: 29493891 DOI: 10.1002/asia.201701773] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/01/2018] [Indexed: 11/08/2022]
Abstract
Aromatic aminocatalysis refers to transformations that employ aromatic amines, such as anilines or aminopyridines, as catalysts. Owing to the conjugation of the amine moiety with the aromatic ring, aromatic amines demonstrate distinctive features in aminocatalysis compared with their aliphatic counterparts. For example, aromatic aminocatalysis typically proceeds with slower turnover, but is more active and conformationally rigid as a result of the stabilized aromatic imine or iminium species. In fact, the advent of aromatic aminocatalysis can be traced back to before the renaissance of organocatalysis in the early 2000s. So far, aromatic aminocatalysis has been widely applied in bioconjugation reactions through transamination; in asymmetric organocatalysis through imine/enamine tautomerization; and in cooperative catalysis with transition metals through C-H/C-C activation and functionalization. This Focus Review summarizes the advent of and major advances in the use of aromatic aminocatalysis in bioconjugation reactions and organic synthesis.
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Affiliation(s)
- Jian Lv
- Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qi Zhang
- Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Mao Cai
- Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yanfang Han
- Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Sanzhong Luo
- Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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11
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Furuta T. Design and Synthesis of Biaryl Amino Acids and Related Catalysts with Molecular Recognition Properties. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Larnaud F, Sulpizi A, Häggman NO, Hughes JME, Dewez DF, Gleason JL. Organocatalytic Michael Addition of Indoles to α-Substituted Enals by Using a Diazepane Carboxylate Catalyst. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700469] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Florent Larnaud
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Adamo Sulpizi
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Nicklas O. Häggman
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Jonathan M. E. Hughes
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - Damien F. Dewez
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. H3A 0B8 Montreal QC Canada
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13
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Hayashi Y, Bondzic BP, Yamazaki T, Gupta Y, Ogasawara S, Taniguchi T, Monde K. Asymmetric Diels-Alder Reaction of α-Substituted and β,β-Disubstituted α,β-Enals via Diarylprolinol Silyl Ether for the Construction of All-Carbon Quaternary Stereocenters. Chemistry 2016; 22:15874-15880. [PMID: 27601216 DOI: 10.1002/chem.201602345] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Indexed: 11/11/2022]
Abstract
The asymmetric Diels-Alder reaction of α-substituted acrolein proceeds in the presence of the trifluoroacetic acid salt of trifluoromethyl-substituted diarylprolinol silyl ether to afford the exo-isomer with both excellent diastereoselectivity and high enantioselectivity. In the Diels-Alder reaction of a β,β-disubstituted α,β-unsaturated aldehyde, good exo-selectivity and excellent enantioselectivity was obtained when the perchloric acid salt of the bulky triisopropyl silyl ether of trifluoromethyl substituted diarylprolinol was employed as an organocatalyst in the presence of water. In both cases, all-carbon quaternary stereocenters are constructed enantioselectively.
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Affiliation(s)
- Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan. .,Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan.
| | - Bojan P Bondzic
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Tatsuya Yamazaki
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Yogesh Gupta
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Shin Ogasawara
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Tohru Taniguchi
- Faculty of Advanced Life Science, Frontier Research Center for Advanced Material and Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo, 001-0021, Japan
| | - Kenji Monde
- Faculty of Advanced Life Science, Frontier Research Center for Advanced Material and Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo, 001-0021, Japan
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14
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Kaldre D, Gleason JL. An Organocatalytic Cope Rearrangement. Angew Chem Int Ed Engl 2016; 55:11557-61. [PMID: 27529777 DOI: 10.1002/anie.201606480] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Indexed: 11/10/2022]
Abstract
The first example of an organocatalytic Cope rearrangement is reported. Acyclic and cyclic acyl hydrazides catalyze the rearrangement of 1,5-hexadiene-2-carboxaldehydes via iminium ion formation. A correlation between ring size and catalyst activity was observed for the cyclic hydrazides, with seven- and eight-membered-ring catalysts being the most active. Diazepane carboxylate 5 c (10 mol %) catalyzed the rearrangement of a range of dienes at room temperature in acetonitrile using triflic acid as a co-catalyst. Preliminary proof of principle for asymmetric catalysis was provided by rearrangement of 3,3-dimethyl-7-phenyl-1,5-heptadiene-2-carboxaldehyde in the presence of a novel 7-substituted diazepane carboxylate.
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Affiliation(s)
- Dainis Kaldre
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC, H3A 0B8, Canada
| | - James L Gleason
- Department of Chemistry, McGill University, 801 Sherbrooke W., Montreal, QC, H3A 0B8, Canada.
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15
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Affiliation(s)
- Dainis Kaldre
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
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16
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Baba T, Yamamoto J, Hayashi K, Sato M, Yamanaka M, Kawabata T, Furuta T. Catalytic discrimination between formyl groups in regio- and stereoselective intramolecular cross-aldol reactions. Chem Sci 2016; 7:3791-3797. [PMID: 30155021 PMCID: PMC6013812 DOI: 10.1039/c5sc04594k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 02/18/2016] [Indexed: 11/21/2022] Open
Abstract
Catalytic discrimination between inequivalent formyl groups was achieved using an aniline-type acid-base catalyst for the regio-, diastereo-, and enantioselective intramolecular cross-aldol reactions of enolizable dials. Although l-proline gave a mixture of the regio- and stereoisomeric products in the presence of an N-containing 1,6-dial, the aniline-type catalyst afforded anti-3,4-disubstituted pyrrolidine in high regio-, and stereoselectivity beyond the background reaction, which led to the regioisomeric 2,3-disubstituted products. The mild reactivity of the aniline-type amine facilitated catalytic discrimination between the inequivalent formyl groups. Kinetic isotope effect studies and reductive amination experiments suggested that the regioselectivity was controlled under the enamine-forming steps.
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Affiliation(s)
- Tomonori Baba
- Institute for Chemical Research , Kyoto University , Uji , Kyoto 611-0011 , Japan .
| | - Junya Yamamoto
- Institute for Chemical Research , Kyoto University , Uji , Kyoto 611-0011 , Japan .
| | - Kazuhiro Hayashi
- Institute for Chemical Research , Kyoto University , Uji , Kyoto 611-0011 , Japan .
| | - Makoto Sato
- Department of Chemistry and Research Center for Smart Molecules , Faculty of Science , Rikkyo University , 3-34-1 Nish-Ikebukuro, Toshima-ku , Tokyo 171-8501 , Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules , Faculty of Science , Rikkyo University , 3-34-1 Nish-Ikebukuro, Toshima-ku , Tokyo 171-8501 , Japan
| | - Takeo Kawabata
- Institute for Chemical Research , Kyoto University , Uji , Kyoto 611-0011 , Japan .
| | - Takumi Furuta
- Institute for Chemical Research , Kyoto University , Uji , Kyoto 611-0011 , Japan .
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17
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Zlotin SG, Kochetkov SV. C2-Symmetric diamines and their derivatives as promising organocatalysts for asymmetric synthesis. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4562] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Lu H, Liu JY, Li CG, Lin JB, Liang YM, Xu PF. A new chiral C1-symmetric NHC-catalyzed addition to α-aryl substituted α,β-disubstituted enals: enantioselective synthesis of fully functionalized dihydropyranones. Chem Commun (Camb) 2015; 51:4473-6. [DOI: 10.1039/c5cc00118h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A new C1-symmetric biarylsaturated imidazolium exhibits a superior ability to enable previously unavailable transformation, and the corresponding fully functionalized dihydropyranones are efficiently synthesized.
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Affiliation(s)
- Hong Lu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Chen-Guang Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jun-Bing Lin
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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19
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Guevara-Pulido JO, Andrés JM, Pedrosa R. Organocatalytic Domino Michael-Heterocyclization Reaction of α,β-Unsaturated Aldehydes and α-Cyano Ketones: Synthesis of Enantioenriched 4,5,6-Trisubstituted 3,4-Dihydropyranones. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402982] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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20
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Engl OD, Fritz SP, Käslin A, Wennemers H. Organocatalytic Route to Dihydrocoumarins and Dihydroquinolinones in All Stereochemical Configurations. Org Lett 2014; 16:5454-7. [DOI: 10.1021/ol502697s] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Oliver D. Engl
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Sven P. Fritz
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Alexander Käslin
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Helma Wennemers
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
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21
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Chapuis C, Skuy D, de Saint Laumer JY, Brauchli R. endo/exo stereoselectivity in Diels-Alder reactions of α,β-dialkylated conjugated enals to cyclic 1,3-dienes: intermediates in the synthesis of (-)-β-santalol and its analogs. Chem Biodivers 2014; 11:1470-516. [PMID: 25329781 DOI: 10.1002/cbdv.201400060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Indexed: 11/10/2022]
Abstract
Highly exo-selective [4+2] cycloadditions of cyclopenta-1,3-diene 2a to α,β-dialkyl conjugated enals 5 are compared with the analogous endo-favored Diels-Alder reaction of cyclohexa-1,3-diene 7. The exo-stereoselectivity is lower in the homologous case of methylcyclopenta-1,3-diene 9. This diastereoselectivity is discussed either in terms of a retro-homo-Diels-Alder reaction, associated with thermodynamic control, or with respect to either a competing hetero-Diels-Alder/Claisen or Cope domino pathway, or retro-Claisen/retro-hetero-Diels-Alder of the endo-homo-cycloadducts. These hypothetical mechanisms have been examined by DFT calculations at the MPW1K(CH2 Cl2 )/6-31+G** level of theory for the AlCl3 -mediated cycloadditions of 5d to 2a and 7. Application of Corey's methodology to the γ-halogeno-α-methyl-substituted dienophiles 5a and 5b allowed an enantioselective preparation of known and useful intermediates for the synthesis of either the naturally occurring (-)-β-santalol or its potentially olfactive structural analogs.
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Affiliation(s)
- Christian Chapuis
- Firmenich SA, Synthesis Department, Corporate R & D Division, P. O. Box 239, CH-1211 Geneva 8, (phone: +41-22-7803610; fax: +41-22-7803334).
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22
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Kemppainen EK, Sahoo G, Piisola A, Hamza A, Kótai B, Pápai I, Pihko PM. Mukaiyama-Michael Reactions withtrans-2,5-Diarylpyrrolidine Catalysts: Enantioselectivity Arises from Attractive Noncovalent Interactions, Not from Steric Hindrance. Chemistry 2014; 20:5983-93. [DOI: 10.1002/chem.201304240] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Indexed: 11/12/2022]
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23
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Fu N, Zhang L, Luo S, Cheng JP. Chiral primary-amine-catalyzed conjugate addition to α-substituted vinyl ketones/aldehydes: divergent stereocontrol modes on enamine protonation. Chemistry 2013; 19:15669-81. [PMID: 24114835 DOI: 10.1002/chem.201302056] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/23/2013] [Indexed: 11/10/2022]
Abstract
Enantioselective protonation with a catalytic enamine intermediate represents a challenging, yet fundamentally important process for the synthesis of α-chiral carbonyls. We describe herein chiral primary-amine-catalyzed conjugate additions of indoles to both α-substituted acroleins and vinyl ketones. These reactions feature enamine protonation as the stereogenic step. A simple primary-tertiary vicinal diamine 1 with trifluoromethanesulfonic acid (TfOH) was found to enable both of the reactions of acroleins and vinyl ketones with good activity and high enantioselectivity. Detailed mechanistic studies reveal that these reactions are rate-limiting in iminium formation and they all involve a uniform H2 O/acid-bridged proton transfer in the stereogenic steps but divergent stereocontrol modes for the protonation stereoselectivity. For the reactions of α-branched acroleins, facial selections on H2 O-bridged protonation determine the enantioselectivity, which is enhanced by an OH⋅⋅⋅π interaction with indole as uncovered by DFT calculations. On the other hand, the stereoselectivity of the reactions with vinyl ketones is controlled according to the Curtin-Hammett principle in the CC bond-formation step, which precedes a highly stereospecific enamine protonation.
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Affiliation(s)
- Niankai Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86) 10-6255-4449
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24
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Jurberg ID, Chatterjee I, Tannert R, Melchiorre P. When asymmetric aminocatalysis meets the vinylogy principle. Chem Commun (Camb) 2013; 49:4869-83. [DOI: 10.1039/c3cc41270a] [Citation(s) in RCA: 207] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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25
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Akagawa K, Kudo K. Construction of an All-Carbon Quaternary Stereocenter by the Peptide-Catalyzed Asymmetric Michael Addition of Nitromethane to β-Disubstituted α,β-Unsaturated Aldehydes. Angew Chem Int Ed Engl 2012; 51:12786-9. [DOI: 10.1002/anie.201206916] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 10/05/2012] [Indexed: 11/08/2022]
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26
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Akagawa K, Kudo K. Construction of an All-Carbon Quaternary Stereocenter by the Peptide-Catalyzed Asymmetric Michael Addition of Nitromethane to β-Disubstituted α,β-Unsaturated Aldehydes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206916] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Cassani C, Melchiorre P. Direct Catalytic Enantioselective Vinylogous Aldol Reaction of α-Branched Enals with Isatins. Org Lett 2012; 14:5590-3. [DOI: 10.1021/ol302711w] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Carlo Cassani
- ICREA - Institució Catalana de Recerca i Estudis Avançats, Pg. Lluís Companys, 23 08010 Barcelona, Spain, and ICIQ - Institute of Chemical Research of Catalonia, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Paolo Melchiorre
- ICREA - Institució Catalana de Recerca i Estudis Avançats, Pg. Lluís Companys, 23 08010 Barcelona, Spain, and ICIQ - Institute of Chemical Research of Catalonia, Av. Països Catalans 16, 43007 Tarragona, Spain
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28
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Silvi M, Cassani C, Moran A, Melchiorre P. Secondary Amine-Catalyzed Asymmetricγ-Alkylation ofα-Branched EnalsviaDienamine Activation. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200412] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Melchiorre P. Katalyse mit primären Cinchona-Aminen zur asymmetrischen Funktionalisierung von Carbonylverbindungen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201109036] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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30
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Melchiorre P. Cinchona-based primary amine catalysis in the asymmetric functionalization of carbonyl compounds. Angew Chem Int Ed Engl 2012; 51:9748-70. [PMID: 22893602 DOI: 10.1002/anie.201109036] [Citation(s) in RCA: 359] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Indexed: 12/21/2022]
Abstract
Asymmetric aminocatalysis exploits the potential of chiral primary and secondary amines to catalyze asymmetric reactions. It has greatly simplified the functionalization of carbonyl compounds while ensuring high enantioselectivity. Recent advances in cinchona-based primary amine catalysis have provided new synthetic opportunities and conceptual perspectives for successfully attacking major challenges in carbonyl compound chemistry, which traditional approaches have not been able to address. This Review outlines the historical context for the development of this catalyst class while charting the landmark discoveries and applications that have further expanded the synthetic potential of aminocatalysis.
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Affiliation(s)
- Paolo Melchiorre
- ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, Barcelona, Spain.
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31
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Linder M, Brinck T. Stepwise Diels-Alder: more than just an oddity? A computational mechanistic study. J Org Chem 2012; 77:6563-73. [PMID: 22780581 DOI: 10.1021/jo301176t] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We have employed hybrid DFT and SCS-MP2 calculations at the SMD-PCM-6-311++G(2d,2p)//6-31+G(d) level to investigate the relationship between three possible channels for forming a Diels-Alder adduct from a highly nucleophilic diene and moderately to highly electrophilic dienophiles. We discuss geometries optimized using the B3LYP and M06-2X functionals with the 6-31+(d) basis set. The transition states and intermediates are characterized on the basis of geometric and electronic properties, and we also address the possibility of predicting detectability of a zwitterionic intermediate based on its relative stability. Our results show that a conventional Diels-Alder transition state conformation yields intermediates in all four investigated cases, but that these are too short-lived to be detected experimentally for the less activated reactants. The stepwise trans pathway, beginning with a conjugate addition-like transition state, becomes increasingly competitive with more activated reactants and is indeed favored for the most electrophilic dienophiles. Addition of a trans diene leads to a dead-end as the trans intermediates have insurmountable rotation barriers that prohibit formation of the second bond, unless another, heterocyclic intermediate is formed. We also show that introduction of a hydrogen bond donating catalyst favors a stepwise pathway even for less activated dienophiles.
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Affiliation(s)
- Mats Linder
- Applied Physical Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-100 44 Stockholm
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32
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Kemppainen EK, Sahoo G, Valkonen A, Pihko PM. Mukaiyama–Michael Reactions with Acrolein and Methacrolein: A Catalytic Enantioselective Synthesis of the C17–C28 Fragment of Pectenotoxins. Org Lett 2012; 14:1086-9. [DOI: 10.1021/ol203486p] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eeva K. Kemppainen
- Department of Chemistry and Nanoscience Center, University of Jyväskylä, POB 35, FIN-40014 JYU, Finland
| | - Gokarneswar Sahoo
- Department of Chemistry and Nanoscience Center, University of Jyväskylä, POB 35, FIN-40014 JYU, Finland
| | - Arto Valkonen
- Department of Chemistry and Nanoscience Center, University of Jyväskylä, POB 35, FIN-40014 JYU, Finland
| | - Petri M. Pihko
- Department of Chemistry and Nanoscience Center, University of Jyväskylä, POB 35, FIN-40014 JYU, Finland
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33
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Ramachary DB, Venkaiah C, Krishna PM. Discovery of 2-aminobuta-1,3-enynes in asymmetric organocascade catalysis: construction of drug-like spirocyclic cyclohexanes having five to six contiguous stereocenters. Chem Commun (Camb) 2012; 48:2252-4. [PMID: 22252651 DOI: 10.1039/c2cc17219d] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We present herein for the first time the asymmetric synthesis of drug-like spiranes through reflexive-Michael reaction by using 2-aminobuta-1,3-enyne catalysis under mild conditions.
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34
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Hong BC, Dange NS, Ding CF, Liao JH. Organocatalytic Michael–Knoevenagel–Hetero-Diels–Alder Reactions: An Efficient Asymmetric One-Pot Strategy to Isochromene Pyrimidinedione Derivatives. Org Lett 2011; 14:448-51. [DOI: 10.1021/ol202877m] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bor-Cherng Hong
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C
| | - Nitin S. Dange
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C
| | - Chun-Feng Ding
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C
| | - Ju-Hsiou Liao
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C
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35
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Hayashi Y, Gotoh H, Honma M, Sankar K, Kumar I, Ishikawa H, Konno K, Yui H, Tsuzuki S, Uchimaru T. Organocatalytic, Enantioselective Intramolecular [6 + 2] Cycloaddition Reaction for the Formation of Tricyclopentanoids and Insight on Its Mechanism from a Computational Study. J Am Chem Soc 2011; 133:20175-85. [DOI: 10.1021/ja108516b] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | - Seiji Tsuzuki
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - Tadafumi Uchimaru
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
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36
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Linder M, Johansson AJ, Brinck T. Mechanistic Insights into the Stepwise Diels–Alder Reaction of 4,6-Dinitrobenzofuroxan. Org Lett 2011; 14:118-21. [DOI: 10.1021/ol202913w] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mats Linder
- Applied Physical Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, Teknikringen 30, S-100 44 Stockholm
| | - Adam Johannes Johansson
- Applied Physical Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, Teknikringen 30, S-100 44 Stockholm
| | - Tore Brinck
- Applied Physical Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, Teknikringen 30, S-100 44 Stockholm
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37
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Lu Y, Zheng C, Yang Y, Zhao G, Zou G. Highly Enantioselective Epoxidation of α,β-Unsaturated Ketones Catalyzed by Primary-Secondary Diamines. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100230] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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38
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Fu N, Zhang L, Li J, Luo S, Cheng JP. Chiral primary amine catalyzed enantioselective protonation via an enamine intermediate. Angew Chem Int Ed Engl 2011; 50:11451-5. [PMID: 21987522 DOI: 10.1002/anie.201105477] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 08/22/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Niankai Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
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39
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Fu N, Zhang L, Li J, Luo S, Cheng JP. Chiral Primary Amine Catalyzed Enantioselective Protonation via an Enamine Intermediate. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105477] [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]
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40
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Tan B, Hernández-Torres G, Barbas CF. Highly Efficient Hydrogen-Bonding Catalysis of the Diels–Alder Reaction of 3-Vinylindoles and Methyleneindolinones Provides Carbazolespirooxindole Skeletons. J Am Chem Soc 2011; 133:12354-7. [DOI: 10.1021/ja203812h] [Citation(s) in RCA: 329] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bin Tan
- The Skaggs Institute for Chemical Biology and Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Gloria Hernández-Torres
- The Skaggs Institute for Chemical Biology and Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Carlos F. Barbas
- The Skaggs Institute for Chemical Biology and Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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41
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Suzuki I, Ando M, Shimabara R, Hirata A, Takeda K. A novel hydrazide type organocatalyst for enantioselective Diels-Alder reactions. Org Biomol Chem 2011; 9:3033-40. [PMID: 21387068 DOI: 10.1039/c0ob01138j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of a new class of hydrazide type organocatalyst, (4R,5R)-1,3-bis(isopropylamino)-4,5-dihenylimidazolidin-2-one 2a, for enantioselective Diels-Alder reactions between cyclopentadiene and α,β-unsaturated aldehydes are presented. The new organocatalyst 2a promoted the reaction, affording Diels-Alder adducts in good yields with good levels of enantioselectivity.
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42
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Kano T, Maruoka K. Development of Highly Selective Organic Reactions Catalyzed by Designed Amine Organocatalysts. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20100229] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Suh SE, Park IK, Lim BY, Cho CG. Acid-Catalyzed [3,3] Sigmatropic Rearrangement of N-Cbz-Diaryl Hydrazide for the Synthesis of Mono-N-Cbz-1,1′-biaryl-2,2′-diamine. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001461] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Construction of Adjacent Quaternary and Tertiary Stereocenters by Conjugate Addition Using Polymer-Supported Cinchona Alkaloids as Catalysts. Catal Letters 2010. [DOI: 10.1007/s10562-010-0509-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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45
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Li J, Fu N, Zhang L, Zhou P, Luo S, Cheng JP. Chiral Primary Amine Catalyzed Asymmetric Epoxidation of α-Substituted Acroleins. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001117] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Linder M, Hermansson A, Liebeschuetz J, Brinck T. Computational design of a lipase for catalysis of the Diels-Alder reaction. J Mol Model 2010; 17:833-49. [DOI: 10.1007/s00894-010-0775-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Accepted: 05/31/2010] [Indexed: 11/28/2022]
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47
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Terrasson V, van der Lee A, Marcia de Figueiredo R, Campagne J. Organocatalyzed Cyclopropanation of α-Substituted α,β-Unsaturated Aldehydes: Enantioselective Synthesis of Cyclopropanes Bearing a Chiral Quaternary Center. Chemistry 2010; 16:7875-80. [DOI: 10.1002/chem.201000334] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Sakakura A, Ishihara K. Organoammonium Salt-Catalyzed Enantioselective Cycloaddition Reactions with α-(Acyloxy)- or α-Diacylaminoacroleins. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090345] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Inokoishi Y, Sasakura N, Nakano K, Ichikawa Y, Kotsuki H. A New Powerful Strategy for the Organocatalytic Asymmetric Construction of a Quaternary Carbon Stereogenic Center. Org Lett 2010; 12:1616-9. [DOI: 10.1021/ol100350w] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yogo Inokoishi
- Laboratory of Natural Product Chemistry, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan
| | - Niiha Sasakura
- Laboratory of Natural Product Chemistry, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan
| | - Keiji Nakano
- Laboratory of Natural Product Chemistry, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan
| | - Yoshiyasu Ichikawa
- Laboratory of Natural Product Chemistry, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan
| | - Hiyoshizo Kotsuki
- Laboratory of Natural Product Chemistry, Faculty of Science, Kochi University, Akebono-cho, Kochi 780-8520, Japan
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50
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