1
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Li L, Li N, Mo XT, Yuan MW, Jiang L, Yuan ML. Synthesis of 2-benzyl N-substituted anilines via imine condensation-isoaromatization of ( E)-2-arylidene-3-cyclohexenones and primary amines. Beilstein J Org Chem 2024; 20:1468-1475. [PMID: 38978743 PMCID: PMC11228828 DOI: 10.3762/bjoc.20.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 06/21/2024] [Indexed: 07/10/2024] Open
Abstract
A catalyst- and additive-free synthesis of 2-benzyl N-substituted anilines from (E)-2-arylidene-3-cyclohexenones and primary amines has been reported. The reaction proceeds smoothly through a sequential imine condensation-isoaromatization pathway, affording a series of synthetically useful aniline derivatives in acceptable to high yields. Mild reaction conditions, no requirement of metal catalysts, operational simplicity and the potential for scale-up production are some of the highlighted advantages of this transformation.
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Affiliation(s)
- Lu Li
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials; School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
| | - Na Li
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials; School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
| | - Xiao-Tian Mo
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials; School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
| | - Ming-Wei Yuan
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials; School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
| | - Lin Jiang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials; School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
| | - Ming-Long Yuan
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials; School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
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2
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Poh CYX, Rozsar D, Yang J, Christensen KE, Dixon DJ. Bifunctional Iminophosphorane Catalyzed Amide Enolization for Enantioselective Cyclohexadienone Desymmetrization. Angew Chem Int Ed Engl 2023:e202315401. [PMID: 38055190 DOI: 10.1002/anie.202315401] [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: 10/12/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/07/2023]
Abstract
The organocatalytic enolization of 2-arylacetamides, followed by an enantioselective intramolecular conjugate addition to tethered 2,5-cyclohexadienones, yielding 3D fused N-heterocycles, is described. The transformation represents the first strong activating group-free activation of carboxamides via α-C-H deprotonation in a metal-free, catalytic, and enantioselective reaction, and is achieved by employing a bifunctional iminophosphorane (BIMP) superbase.
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Affiliation(s)
- Charmaine Y X Poh
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Daniel Rozsar
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Jinchao Yang
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Kirsten E Christensen
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Darren J Dixon
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
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3
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Eronen A, Nieger M, Kajander TA, Repo T. Stereospecific Synthesis of Cyclohexenone Acids by [3,3]-Sigmatropic Rearrangement Route. J Org Chem 2023; 88:12914-12923. [PMID: 37656942 PMCID: PMC10507681 DOI: 10.1021/acs.joc.3c00757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Indexed: 09/03/2023]
Abstract
Herein we report a modular synthetic method for the preparation of diaryl-substituted cyclohexenone acids starting from phenyl pyruvate and suitable enones. When the reaction is carried out in alkaline tert-butanol or toluene solutions in microwave-assisted conditions mainly anti configuration products are obtained with up to 86% isolated yield. However, when the reaction is carried out in alkaline water, a mixture of products with anti and syn conformations is obtained with up to 98% overall isolated yield. Mechanistically the product with anti conformation forms by a hemiketal-oxy-Cope type [3,3]-sigmatropic rearrangement-intramolecular aldol condensation route and syn product by an intermolecular aldol condensation-electrocyclization (disrotatory type) route.
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Affiliation(s)
- Aleksi Eronen
- Department
of Chemistry, University of Helsinki, PO Box 55 (A. I. Virtasen aukio
1), 00014, Helsinki, Finland
| | - Martin Nieger
- Department
of Chemistry, University of Helsinki, PO Box 55 (A. I. Virtasen aukio
1), 00014, Helsinki, Finland
| | - Tommi A. Kajander
- Institute
of Biotechnology, University of Helsinki, PO Box 65 (Viikinkaari 1), 00014, Helsinki, Finland
| | - Timo Repo
- Department
of Chemistry, University of Helsinki, PO Box 55 (A. I. Virtasen aukio
1), 00014, Helsinki, Finland
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4
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Lóška L, Dočekal V, Císařová I, Veselý J. Stereoselective N-Heterocyclic-Carbene-Catalyzed Formal [4 + 2] Cycloaddition: Access to Chiral Heterocyclic Cyclohexenones. Org Lett 2023; 25:174-178. [PMID: 36595711 DOI: 10.1021/acs.orglett.2c04021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The present study reports an asymmetric NHC-catalyzed formal [4 + 2] cycloaddition of heterocyclic alkenes containing a polarized double bond with an azolium-dienolate intermediate generated from α-bromo-α,β-unsaturated aldehydes without external oxidation of the Breslow intermediate. Heterocyclic cyclohexenones were produced in good isolated yields (typically about 90%) with good stereochemical outcomes (in most cases, dr > 20/1, and ee = 70-99%). The synthetic utility of the protocol was exemplified by the scope of heterocyclic alkenes.
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Affiliation(s)
- Ladislav Lóška
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 00 Prague 2, Czech Republic
| | - Vojtěch Dočekal
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 00 Prague 2, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 00 Prague 2, Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 00 Prague 2, Czech Republic
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5
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Peng PK, May JA. Enantioselective Organocatalytic Conjugate Addition in a Tandem Synthesis of δ-Substituted Cyclohexenones and Four-Step Total Synthesis of Penienone. Org Lett 2022; 24:5334-5338. [PMID: 35838547 DOI: 10.1021/acs.orglett.2c01976] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A bisperfluorotoluyl-BINOL catalyzed conjugate addition of trifluoroborate salts to doubly vinylogous esters and aldol condensation synthesized chiral δ-substituted cyclohexenones with high yields and enantioselectivities (10 examples, up to 89% yield, 89-98% ee). Stepwise and single-pot sequences were developed, with the former also providing β-substituted masked ketoaldehydes containing a vinyl ether. The transformation was used in a four-step total synthesis of penienone (24% overall yield), ≤ half the steps as in previous syntheses.
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Affiliation(s)
- Po-Kai Peng
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, Texas 77204-5003, United States
| | - Jeremy A May
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Building 112, Houston, Texas 77204-5003, United States
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6
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Bertuletti S, Bayout I, Bassanini I, Ferrandi EE, Bouzemi N, Monti D, Riva S. Biocatalytic Approaches to the Enantiomers of Wieland–Miescher Ketone and its Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100174] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Susanna Bertuletti
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” Consiglio Nazionale delle Ricerche Via Mario Bianco 9 Milano 20131 Italy
- Pharmaceutical Sciences Department University of Milan Via Mangiagalli 25 Milano 20133 Italy
| | - Ikram Bayout
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” Consiglio Nazionale delle Ricerche Via Mario Bianco 9 Milano 20131 Italy
- Ecocompatible Asymmetric Catalysis Laboratory (LCAE). Badji Mokhtar Annaba-University BP12 Annaba 23000 Algeria
| | - Ivan Bassanini
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” Consiglio Nazionale delle Ricerche Via Mario Bianco 9 Milano 20131 Italy
| | - Erica E. Ferrandi
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” Consiglio Nazionale delle Ricerche Via Mario Bianco 9 Milano 20131 Italy
| | - Nassima Bouzemi
- Ecocompatible Asymmetric Catalysis Laboratory (LCAE). Badji Mokhtar Annaba-University BP12 Annaba 23000 Algeria
| | - Daniela Monti
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” Consiglio Nazionale delle Ricerche Via Mario Bianco 9 Milano 20131 Italy
| | - Sergio Riva
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” Consiglio Nazionale delle Ricerche Via Mario Bianco 9 Milano 20131 Italy
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7
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García‐Urricelqui A, Cózar A, Campano TE, Mielgo A, Palomo C. syn
‐Selective Michael Reaction of α‐Branched Aryl Acetaldehydes with Nitroolefins Promoted by Squaric Amino Acid Derived Bifunctional Brønsted Bases. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ane García‐Urricelqui
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
| | - Abel Cózar
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
- IKERBASQUE Basque Foundation for Science 48009 Blbao Spain
| | - Teresa E. Campano
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
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8
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Kimaru N, Komatsuki K, Saito K, Yamada T. Decarboxylation-triggered homo-Nazarov cyclization of cyclic enol carbonates catalyzed by rhenium complex. Chem Commun (Camb) 2021; 57:6133-6136. [PMID: 34042121 DOI: 10.1039/d1cc01144h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Decarboxylative homo-Nazarov cyclization catalyzed by a Lewis acid was achieved using a cyclic enol carbonate bearing a cyclopropane moiety as a substrate. Various substrates were converted into the corresponding multi-substituted cyclohexenones in good yields via decarboxylation, followed by 6-membered ring formation involving cyclopropane-ring-opening.
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Affiliation(s)
- Natsuki Kimaru
- Department of Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Keiichi Komatsuki
- Department of Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Kodai Saito
- Department of Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Tohru Yamada
- Department of Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
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9
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Direct Catalytic Asymmetric Synthesis of Disubstituted 4-Oxocyclohexanecarbaldehydes from Acetone and Cinnamaldehyde Derivatives. Org Lett 2021; 23:1566-1571. [DOI: 10.1021/acs.orglett.0c04277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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10
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García-Urricelqui A, de Cózar A, Mielgo A, Palomo C. Probing α-Amino Aldehydes as Weakly Acidic Pronucleophiles: Direct Access to Quaternary α-Amino Aldehydes by an Enantioselective Michael Addition Catalyzed by Brønsted Bases. Chemistry 2021; 27:2483-2492. [PMID: 33034390 DOI: 10.1002/chem.202004468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Indexed: 12/20/2022]
Abstract
The high tendency of α-amino aldehydes to undergo 1,2-additions and their relatively low stability under basic conditions have largely prevented their use as pronucleophiles in the realm of asymmetric catalysis, particularly for the production of quaternary α-amino aldehydes. Herein, it is demonstrated that the chemistry of α-amino aldehydes may be expanded beyond these limits by documenting the first direct α-alkylation of α-branched α-amino aldehydes with nitroolefins. The reaction produces densely functionalized products bearing up to two, quaternary and tertiary, vicinal stereocenters with high diastereo- and enantioselectivity. DFT modeling leads to the proposal that intramolecular hydrogen bonding between the NH group and the carbonyl oxygen atom in the starting α-amino aldehyde is key for reaction stereocontrol.
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Affiliation(s)
- Ane García-Urricelqui
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
| | - Abel de Cózar
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizábal 3, 20018, San Sebastián, Spain
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11
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Chandra G, Patel S. Molecular Complexity from Aromatics: Recent Advances in the Chemistry of
para
Quinol and Masked
para
‐Quinone Monoketal. ChemistrySelect 2020. [DOI: 10.1002/slct.202003802] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Girish Chandra
- Department of Chemistry School of Physical and Chemical Sciences Central University of South Bihar SH-7, Gaya-Panchanpur Road Gaya Bihar India 824236
| | - Samridhi Patel
- Department of Chemistry School of Physical and Chemical Sciences Central University of South Bihar SH-7, Gaya-Panchanpur Road Gaya Bihar India 824236
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12
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Golec JC, Carter EM, Ward JW, Whittingham WG, Simón L, Paton RS, Dixon DJ. BIMP-Catalyzed 1,3-Prototropic Shift for the Highly Enantioselective Synthesis of Conjugated Cyclohexenones. Angew Chem Int Ed Engl 2020; 59:17417-17422. [PMID: 32558981 PMCID: PMC7540019 DOI: 10.1002/anie.202006202] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/03/2020] [Indexed: 12/18/2022]
Abstract
A bifunctional iminophosphorane (BIMP)-catalysed enantioselective synthesis of α,β-unsaturated cyclohexenones through a facially selective 1,3-prototropic shift of β,γ-unsaturated prochiral isomers, under mild reaction conditions and in short reaction times, on a range of structurally diverse substrates, is reported. α,β-Unsaturated cyclohexenone products primed for downstream derivatisation were obtained in high yields (up to 99 %) and consistently high enantioselectivity (up to 99 % ee). Computational studies into the reaction mechanism and origins of enantioselectivity, including multivariate linear regression of TS energy, were carried out and the obtained data were found to be in good agreement with experimental findings.
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Affiliation(s)
- Jonathan C. Golec
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - Eve M. Carter
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - John W. Ward
- Leverhulme Research Centre for Functional Materials DesignThe Materials Innovation FactoryDepartment of ChemistryUniversity of LiverpoolLiverpoolL7 3NYUK
| | | | - Luis Simón
- Facultad de Ciencias QuímicasUniversidad de SalamancaPlaza de los Caídos 1–537008SalamancaSpain
| | - Robert S. Paton
- Department of ChemistryColorado State University1301 Center AveFt. CollinsCO80523-1872USA
| | - Darren J. Dixon
- Department of ChemistryChemistry Research LaboratoryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
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13
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Golec JC, Carter EM, Ward JW, Whittingham WG, Simón L, Paton RS, Dixon DJ. BIMP‐Catalyzed 1,3‐Prototropic Shift for the Highly Enantioselective Synthesis of Conjugated Cyclohexenones. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jonathan C. Golec
- Department of Chemistry Chemistry Research Laboratory University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Eve M. Carter
- Department of Chemistry Chemistry Research Laboratory University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - John W. Ward
- Leverhulme Research Centre for Functional Materials Design The Materials Innovation Factory Department of Chemistry University of Liverpool Liverpool L7 3NY UK
| | | | - Luis Simón
- Facultad de Ciencias Químicas Universidad de Salamanca Plaza de los Caídos 1–5 37008 Salamanca Spain
| | - Robert S. Paton
- Department of Chemistry Colorado State University 1301 Center Ave Ft. Collins CO 80523-1872 USA
| | - Darren J. Dixon
- Department of Chemistry Chemistry Research Laboratory University of Oxford Mansfield Road Oxford OX1 3TA UK
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14
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Nagireddy A, Singam MKR, Nanubolu JB, Sridhar Reddy M. Base-Mediated Cyclopentannulation of Ynones with Amino Crotonates for Regio- and Stereoselective Synthesis of Pentafulvenes and Cyclopenta[ c]quinolines. J Org Chem 2020; 85:6970-6980. [PMID: 32421329 DOI: 10.1021/acs.joc.0c00203] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A regio- and stereoselective synthesis of unsymmetrically substituted pentafulvenes is reported via the condensation of readily available ynones and amino crotonates under very mild conditions. The mechanism of this 3 + 2 annulation involved a vinylogous Michael addition followed by an intramolecular enamine aldol condensation. Substrates with o-bromo tether further cyclized to pentannulated hydroquinolines through an isomerization/SNAr in the same reaction pot at the elevated temperature.
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Affiliation(s)
- Attunuri Nagireddy
- Academy of Scientific and Innovative Research, New Delhi 110001, India.,Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India
| | - Maneesh Kumar Reddy Singam
- Academy of Scientific and Innovative Research, New Delhi 110001, India.,Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India
| | | | - Maddi Sridhar Reddy
- Academy of Scientific and Innovative Research, New Delhi 110001, India.,Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India
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15
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Development of Multi‐Catalytic Strategies Based on the Combination between Iron‐/Copper‐ and Organo‐Catalysis. Isr J Chem 2020. [DOI: 10.1002/ijch.202000018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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16
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Enantioselective synthesis of cis-hydrobenzofurans bearing all-carbon quaternary stereocenters and application to total synthesis of (‒)-morphine. Nat Commun 2019; 10:2507. [PMID: 31175289 PMCID: PMC6555830 DOI: 10.1038/s41467-019-10398-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 05/07/2019] [Indexed: 12/31/2022] Open
Abstract
(‒)-Morphine, which is selected as an essential medicine by World Health Organization, is widely applied in the treatment of the pain-related diseases. Due to its synthetically challenging molecular architecture and important clinical role, extensive synthetic studies of morphine-type alkaloids have been conducted. However, catalytic asymmetric total synthesis of (‒)-morphine remains a long-standing challenge. Here, we disclose an efficient enantioselective total synthesis of (‒)-morphine in a longest linear sequence of 16 steps. The key transformation features a highly enantioselective Robinson annulation enabled by our spiro-pyrrolidine catalyst to rapidly construct the densely functionalized cis-hydrodibenzofuran framework containing vicinal stereocenters with an all-carbon quaternary center. This asymmetric approach provides an alternative strategy for the synthesis of (‒)-morphine and its analogues. (‒)-Morphine is an essential medicine selected by the World Health Organization, however its catalytic asymmetric syntheses have been rarely reported. Here, the authors developed an intramolecular enantioselective Michael addition leading to (‒)-morphine in a longest linear sequence of 16 steps.
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17
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Wang W, Ye L, Shi Z, Zhao Z, Li X. Enantioselective Michael addition of malonates to α,β-unsaturated ketones catalyzed by 1,2-diphenylethanediamine. RSC Adv 2018; 8:41699-41704. [PMID: 35558786 PMCID: PMC9091971 DOI: 10.1039/c8ra07809b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 12/03/2018] [Indexed: 11/21/2022] Open
Abstract
A general and highly enantioselective Michael addition of malonates to cinnamones and chalcones has been developed. The commercially available 1,2-diphenylethanediamine could be directly utilized as the organocatalyst to furnish the desired adducts in satisfactory yield (61–99%) and moderate to excellent enantiopurity (65 to >99% ee). β-Ketoester was also a competent donor and was employed to construct densely functionalized cyclohexenones via a tandem Michael-aldol condensation process. 1,2-Diphenylethanediamine could be directly utilized to promote the Michael addition of malonates and β-ketoesters to various α,β-unsaturated ketones.![]()
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Affiliation(s)
- Wei Wang
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University Chengdu 610041 China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University Chengdu 610031 China
| | - Zhichuan Shi
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University Chengdu 610041 China
| | - Zhigang Zhao
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University Chengdu 610041 China
| | - Xuefeng Li
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University Chengdu 610041 China
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18
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19
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Matías DM, Johnson JS. Synthesis and Desymmetrization of meso Tricyclic Systems Derived from Benzene Oxide. J Org Chem 2018; 83:4859-4866. [PMID: 29634261 DOI: 10.1021/acs.joc.8b00523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ozonolysis of the Diels-Alder adducts derived from benzene oxides and N-alkylmaleimides resulted in fully substituted, meso bicyclic systems bearing six contiguous stereocenters, isolated as diols upon reductive workup with NaBH4. Variation in the workup allowed for isolation of two different diastereoisomers, through double epimerization of the imide stereocenters. Desymmetrization of the resulting meso diols via asymmetric nucleophilic epoxide opening and acylation reactions provided access to highly substituted, enantioenriched fused rings.
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Affiliation(s)
- Desirée M Matías
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Jeffrey S Johnson
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
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20
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Olaizola I, Campano TE, Iriarte I, Vera S, Mielgo A, García JM, Odriozola JM, Oiarbide M, Palomo C. α-Hydroxy Ketones as Masked Ester Donors in Brønsted Base Catalyzed Conjugate Additions to Nitroalkenes. Chemistry 2018; 24:3893-3901. [DOI: 10.1002/chem.201705968] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Indexed: 01/14/2023]
Affiliation(s)
- Iurre Olaizola
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Teresa E. Campano
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Igor Iriarte
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Silvia Vera
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Jesús M. García
- Departamento de Química Aplicada; Institute for Advanced Materials (INAMAT); Universidad Pública de Navarra; 31006 Pamplona Spain
| | - José M. Odriozola
- Departamento de Química Aplicada; Institute for Advanced Materials (INAMAT); Universidad Pública de Navarra; 31006 Pamplona Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
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21
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Hu XM, Luo DY, Zi QX, Lin J, Yan SJ. Diastereoselective Synthesis of Morphan Derivatives by Michael and Hetero-Michael Addition of 1,1-Enediamines to Quinone Monoketals. ACS OMEGA 2018; 3:8-21. [PMID: 31457875 PMCID: PMC6641283 DOI: 10.1021/acsomega.7b01493] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 12/19/2017] [Indexed: 05/24/2023]
Abstract
A general and concise method was developed for the synthesis of highly functionalized morphans 3-4 by the Michael and hetero-Michael addition reaction of different types of quinone monoketals 1 and 1,1-enediamines 2 in ethanol or 1,4-dioxane at reflux. This method is suitable for the efficient parallel syntheses of N-containing heterocycles. A library of highly functional morphan derivatives was easily constructed using the Michael/hetero-Michael reaction.
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Affiliation(s)
| | | | | | - Jun Lin
- E-mail: . Phone/Fax: +86 87165031633 (J.L.)
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22
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Mei H, Lin L, Shen B, Liu X, Feng X. Highly enantioselective desymmetrization of prochiral cyclic α,α-dicyanoalkenes via the direct vinylogous Michael/cyclization domino reaction. Org Chem Front 2018. [DOI: 10.1039/c8qo00545a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A chiral N,N′-dioxide/Mg(ii) complex efficiently constructs spiroindolinones which include three adjacent atom chiralities and a tertiary carbon center at remote sites in up to 95% yield, with 99% ee and 20 : 1 dr.
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Affiliation(s)
- Hongjiang Mei
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Bin Shen
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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23
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Shiloni Y, Fallek R, Portnoy M. Finding Lead Catalytic Systems for a Rare Version of Enantioselective Robinson Annulation: Integration of Fluorogenic Assays in Catalyst Screening. ACS OMEGA 2017; 2:7253-7266. [PMID: 31457301 PMCID: PMC6645050 DOI: 10.1021/acsomega.7b01103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/22/2017] [Indexed: 06/10/2023]
Abstract
Among the several variants of the highly useful and versatile Robinson annulation, a particular variation that involves ketones reacting with nonenolizable enones, while the α-carbons of the ketones act as nucleophiles at both steps of this cascade process, remains largely unexplored. Moreover, such a catalytic enantioselective reaction is exceptionally rare. While pursuing catalysis of this transformation, we developed two fluorogenic assays that, in combination with other analytic techniques, enabled rapid screening of several sets of catalysts. The first set of polymer-bound aminourea bifunctional organocatalysts was screened using a two-step fluorogenic protocol, designed for slower (e.g., heterogeneous) catalysts. Robinson annulation of acetone with 4'-nitrochalcone formed 3-(4-nitrophenyl)-5-phenyl-2-cyclohexenone, which, after a "developing" reductive treatment, was converted into the corresponding amino derivative, serving as a fluorescent reporter. On the other hand, a range of potentially faster homogeneous catalyst-cocatalyst systems were examined using a direct assay, where 4'-dimethylaminochalcone is converted into the corresponding cyclohexanone fluorescent reporter already upon annulation with acetone. In both cases, the combination of the fluorogenic protocols with high-performance liquid chromatography-based enantiomeric excess estimation enabled identification of lead catalysts, which promoted the enantioselective version of this variant of the annulation.
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24
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Huang X, Liu M, Jasinski JP, Peng B, Zhang W. Recyclable Organocatalysts for a One-Pot Asymmetric Synthesis of 2-Fluorocyclohexanols Bearing Six Contiguous Stereocenters. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700129] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xin Huang
- College of Chemistry and Life Sciences; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Miao Liu
- Department of Chemistry; University of Massachusetts; 100 Morrissey Boulevard Boston, MA 02125 USA
| | - Jerry P. Jasinski
- Department of Chemistry; Keene State College; 229 Main Street Keene, NH 03435 USA
| | - Bo Peng
- College of Chemistry and Life Sciences; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Wei Zhang
- Department of Chemistry; University of Massachusetts; 100 Morrissey Boulevard Boston, MA 02125 USA
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25
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Badiola E, Olaizola I, Vázquez A, Vera S, Mielgo A, Palomo C. β 2, 2 -Amino Acid N-Carboxyanhydrides Relying on Sequential Enantioselective C(4)-Functionalization of Pyrrolidin-2,3-diones and Regioselective Baeyer-Villiger Oxidation. Chemistry 2017; 23:8185-8195. [PMID: 28245062 DOI: 10.1002/chem.201700464] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 12/12/2022]
Abstract
A catalytic enantioselective entry to β2, 2 -amino acids enabling their direct coupling with nucleophiles is described. The approach is based upon an effective bifunctional Brønsted base catalyzed construction of a quaternary carbon stereocenter at C4 position of pyrrolidin-2,3-diones. Subsequent regioselective Baeyer-Villiger oxidation of the resultant adducts gives β2, 2 -amino acid N-carboxyanhydrides as the reactive species, which can further react with nucleophiles. Following this strategy both, β2, 2 -amino acid derivatives with different functionalities at the newly created stereocenter, and spirocyclic structures can be efficiently prepared.
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Affiliation(s)
- Eider Badiola
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Iurre Olaizola
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Ana Vázquez
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Silvia Vera
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco, Manuel Lardizábal, 3, 20018, Donostia-San Sebastián, Spain
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26
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Jia ZL, Wang Y, Zhao CG, Zhang XH, Xu PF. Highly Enantioselective Construction of Hajos–Wiechert Ketone Skeletons via an Organocatalytic Vinylogous Michael/Stetter Relay Sequence. Org Lett 2017; 19:2130-2133. [DOI: 10.1021/acs.orglett.7b00767] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Zhi-Long Jia
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yao Wang
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Chuan-Gang Zhao
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiao-Hai Zhang
- 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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27
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Double Michael addition of nitromethane to divinyl ketones: A remarkably positive effect of additive. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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28
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Tang L, Luo Y, Xue JW, He YH, Guan Z. Highly enantioselective Michael-aldol-dehydration reaction for the synthesis of chiral 3,5-diaryl-cyclohexenones catalyzed by primary amine. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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29
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Rana NK, Joshi H, Jha RK, Singh VK. Enantioselective Tandem Oxidation/Michael-Aldol Approaches to Tetrasubstituted Cyclohexanes. Chemistry 2017; 23:2040-2043. [DOI: 10.1002/chem.201605999] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Nirmal K. Rana
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal, M.P.- 462 066 India
| | - Harshit Joshi
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, U.P.- 208 016 India
| | - Rupesh K. Jha
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, U.P.- 208 016 India
| | - Vinod K. Singh
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal, M.P.- 462 066 India
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur, U.P.- 208 016 India
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30
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Urruzuno I, Mugica O, Oiarbide M, Palomo C. Bifunctional Brønsted Base Catalyst Enables Regio-, Diastereo-, and Enantioselective Cα-Alkylation of β-Tetralones and Related Aromatic-Ring-Fused Cycloalkanones. Angew Chem Int Ed Engl 2017; 56:2059-2063. [DOI: 10.1002/anie.201612332] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Iñaki Urruzuno
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Odei Mugica
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
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31
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Urruzuno I, Mugica O, Oiarbide M, Palomo C. Bifunctional Brønsted Base Catalyst Enables Regio-, Diastereo-, and Enantioselective Cα-Alkylation of β-Tetralones and Related Aromatic-Ring-Fused Cycloalkanones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612332] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Iñaki Urruzuno
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Odei Mugica
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
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32
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Chauhan P, Mahajan S, Kaya U, Valkonen A, Rissanen K, Enders D. Asymmetric Synthesis of Spiro β-Lactamsviaa Squaramide- Catalyzed Sulfa-Michael Addition/Desymmetrization Protocol. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600554] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Pankaj Chauhan
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Suruchi Mahajan
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Uğur Kaya
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Arto Valkonen
- Department of Chemistry; Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry; Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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33
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Koutoulogenis G, Kaplaneris N, Kokotos CG. (Thio)urea-mediated synthesis of functionalized six-membered rings with multiple chiral centers. Beilstein J Org Chem 2016; 12:462-95. [PMID: 27340441 PMCID: PMC4902000 DOI: 10.3762/bjoc.12.48] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 02/23/2016] [Indexed: 12/25/2022] Open
Abstract
Organocatalysis, now running its second decade of life, is being considered one of the main tools a synthetic chemist has to perform asymmetric catalysis. In this review the synthesis of six-membered rings, that contain multiple chiral centers, either by a ring closing process or by a functionalization reaction on an already existing six-membered ring, utilizing bifunctional (thio)ureas will be summarized. Initially, the use of primary amine-thioureas as organocatalysts for the above transformation is being discussed, followed by the examples employing secondary amine-thioureas. Finally, the use of tertiary amine-thioureas and miscellaneous examples are presented.
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Affiliation(s)
- Giorgos Koutoulogenis
- Department of Chemistry, National and Kapodestrian University of Athens, Panepistimiopolis 15771, Athens, Greece
| | - Nikolaos Kaplaneris
- Department of Chemistry, National and Kapodestrian University of Athens, Panepistimiopolis 15771, Athens, Greece
| | - Christoforos G Kokotos
- Department of Chemistry, National and Kapodestrian University of Athens, Panepistimiopolis 15771, Athens, Greece
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34
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Mackay WD, Johnson JS. Kinetic Separation and Asymmetric Reactions of Norcaradiene Cycloadducts: Facilitated Access via H2O-Accelerated Cycloaddition. Org Lett 2016; 18:536-9. [DOI: 10.1021/acs.orglett.5b03577] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- William D. Mackay
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Jeffrey S. Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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35
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Yu Z, Qi X, Li Y, Liu S, Lan Y. Mechanism, chemoselectivity and enantioselectivity for the rhodium-catalyzed desymmetric synthesis of hydrobenzofurans: a theoretical study. Org Chem Front 2016. [DOI: 10.1039/c5qo00334b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A theoretical study of Rhodium-catalyzed desymmetrization of cyclohexadienones.
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Affiliation(s)
- Zhaoyuan Yu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Xiaotian Qi
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Yingzi Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Song Liu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
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36
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Borissov A, Davies TQ, Ellis SR, Fleming TA, Richardson MSW, Dixon DJ. Organocatalytic enantioselective desymmetrisation. Chem Soc Rev 2016; 45:5474-5540. [DOI: 10.1039/c5cs00015g] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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37
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Yu L, Yang Z, Peng J, Li P. Substrate-Controlled Synthesis of Functionalized Cyclohexanes with Four Stereocenters by Organocatalytic Asymmetric Domino Reactions Between γ-Nitro Ketone and Enone. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501303] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Pantaine L, Coeffard V, Moreau X, Greck C. Enantioselective Desymmetrization of para-Quinamines through an Aminocatalyzed Aza-Michael/Cyclization Cascade Reaction. Org Lett 2015; 17:3674-7. [DOI: 10.1021/acs.orglett.5b01595] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Loïc Pantaine
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Vincent Coeffard
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Xavier Moreau
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Christine Greck
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
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39
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Du JY, Zeng C, Han XJ, Qu H, Zhao XH, An XT, Fan CA. Asymmetric Total Synthesis of Apocynaceae Hydrocarbazole Alkaloids (+)-Deethylibophyllidine and (+)-Limaspermidine. J Am Chem Soc 2015; 137:4267-73. [DOI: 10.1021/jacs.5b01926] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ji-Yuan Du
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Chao Zeng
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Xiao-Jie Han
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Hu Qu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Xian-He Zhao
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Xian-Tao An
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
| | - Chun-An Fan
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou 730000, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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40
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Lam YH, Houk KN. Origins of Stereoselectivity in Intramolecular Aldol Reactions Catalyzed by Cinchona Amines. J Am Chem Soc 2015; 137:2116-27. [DOI: 10.1021/ja513096x] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yu-hong Lam
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - K. N. Houk
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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41
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Huang X, Pham K, Zhang X, Yi WB, Hyatt JH, Tran AP, Jasinski JP, Zhang W. Recyclable organocatalyst-promoted one-pot Michael/aza-Henry/lactamization reactions for fluorinated 2-piperidinones bearing four stereogenic centres. RSC Adv 2015. [DOI: 10.1039/c5ra15306a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
A highly efficient method for asymmetric synthesis of fluorinated 2-piperidinones bearing four stereogenic centres is introduced.
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Affiliation(s)
- Xin Huang
- Department of Chemistry
- University of Massachusetts Boston
- Boston
- USA
| | - Kenny Pham
- Department of Chemistry
- University of Massachusetts Boston
- Boston
- USA
| | - Xiaofeng Zhang
- Department of Chemistry
- University of Massachusetts Boston
- Boston
- USA
| | - Wen-Bin Yi
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Jeremy H. Hyatt
- Department of Chemistry
- University of Massachusetts Boston
- Boston
- USA
| | - Anthony P. Tran
- Department of Chemistry
- University of Massachusetts Boston
- Boston
- USA
| | | | - Wei Zhang
- Department of Chemistry
- University of Massachusetts Boston
- Boston
- USA
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42
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Quintard A, Rodriguez J. Synergistic Cu–amine catalysis for the enantioselective synthesis of chiral cyclohexenones. Chem Commun (Camb) 2015; 51:9523-6. [DOI: 10.1039/c5cc02987b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented utilization of 1,3-acetonedicarboxylic acid as a 1,3-bis-pro-nucleophile and a reactive acetone surrogate in enantioselective catalysis has been reported.
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Affiliation(s)
- A. Quintard
- Aix Marseille Université
- Centrale Marseille
- CNRS
- Marseille
- France
| | - J. Rodriguez
- Aix Marseille Université
- Centrale Marseille
- CNRS
- Marseille
- France
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Yu L, Yang Q, Li P. Phase-Transfer-Catalyst-Mediated Domino Reaction of γ-Nitro Ketones with Chalcones: Approach to Functionalized Six-Membered-Ring Carbocycles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Peixoto PA, Cormier M, Ekosso Epane J, Jean A, Maddaluno J, De Paolis M. Metal-free aerobic C–H oxidation of cyclic enones. Org Chem Front 2014. [DOI: 10.1039/c4qo00125g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free procedure is described for the aerobic and complete C–H methylene oxidation of Hajos–Parrish enones to versatile dihydroindenediones.
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Affiliation(s)
- P. A. Peixoto
- Laboratoire COBRA
- CNRS UMR 6014 & FR 3038
- Université et INSA de Rouen
- 76821-Mont Saint-Aignan, France
| | - M. Cormier
- Laboratoire COBRA
- CNRS UMR 6014 & FR 3038
- Université et INSA de Rouen
- 76821-Mont Saint-Aignan, France
| | - J. Ekosso Epane
- Laboratoire COBRA
- CNRS UMR 6014 & FR 3038
- Université et INSA de Rouen
- 76821-Mont Saint-Aignan, France
| | - A. Jean
- Laboratoire COBRA
- CNRS UMR 6014 & FR 3038
- Université et INSA de Rouen
- 76821-Mont Saint-Aignan, France
| | - J. Maddaluno
- Laboratoire COBRA
- CNRS UMR 6014 & FR 3038
- Université et INSA de Rouen
- 76821-Mont Saint-Aignan, France
| | - M. De Paolis
- Laboratoire COBRA
- CNRS UMR 6014 & FR 3038
- Université et INSA de Rouen
- 76821-Mont Saint-Aignan, France
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