1
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He JY, Zhu C, Duan WX, Kong LX, Wang NN, Wang YZ, Fan ZY, Qiao XY, Xu H. Bifunctional Chiral Electrocatalysts Enable Enantioselective α-Alkylation of Aldehydes. Angew Chem Int Ed Engl 2024; 63:e202401355. [PMID: 38967087 DOI: 10.1002/anie.202401355] [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: 01/19/2024] [Revised: 06/25/2024] [Accepted: 07/04/2024] [Indexed: 07/06/2024]
Abstract
Herein, we describe an innovative approach to the asymmetric electrochemical α-alkylation of aldehydes facilitated by a newly designed bifunctional chiral electrocatalyst. The highly efficient bifunctional chiral electrocatalyst combines a chiral aminocatalyst with a redox mediator. It plays a dual role as a redox mediator for electrooxidation, while simultaneously providing remarkable asymmetric induction for the stereoselective α-alkylation of aldehydes. Additionally, this novel catalyst exhibits enhanced catalytic activity and excellent stereoselective control comparable to conventional catalytic systems. As a result, this strategy provides a new avenue for versatile asymmetric electrochemistry. The electrooxidation of diverse phenols enables the C-H/C-H oxidative α-alkylation of aldehydes in a highly chemo- and stereoselective fashion. Detailed mechanistic studies by control experiments and cyclic voltammetry analysis demonstrate possible reaction pathways and the origin of enantio-induction.
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Affiliation(s)
- Jin-Yu He
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Cuiju Zhu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Wen-Xi Duan
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Ling-Xuan Kong
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Na-Na Wang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Yan-Zhao Wang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Zhi-Yong Fan
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Xin-Ying Qiao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Hao Xu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
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2
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Ghosh B, Harariya MS, Mukherjee S. Catalytic Enantioselective
de novo
Construction of Chiral Arenes through Desymmetrizing Oxidative [4+2]‐Cycloaddition. Angew Chem Int Ed Engl 2022; 61:e202204523. [DOI: 10.1002/anie.202204523] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Biki Ghosh
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
| | | | - Santanu Mukherjee
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
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3
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Hilgers R, Yong Teng S, Briš A, Pereverzev AY, White P, Jansen JJ, Roithová J. Monitoring Reaction Intermediates to Predict Enantioselectivity Using Mass Spectrometry**. Angew Chem Int Ed Engl 2022; 61:e202205720. [PMID: 35561144 PMCID: PMC9544535 DOI: 10.1002/anie.202205720] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/18/2022]
Abstract
Enantioselective reactions are at the core of chemical synthesis. Their development mostly relies on prior knowledge, laborious product analysis and post‐rationalization by theoretical methods. Here, we introduce a simple and fast method to determine enantioselectivities based on mass spectrometry. The method is based on ion mobility separation of diastereomeric intermediates, formed from a chiral catalyst and prochiral reactants, and delayed reactant labeling experiments to link the mass spectra with the reaction kinetics in solution. The data provide rate constants along the reaction paths for the individual diastereomeric intermediates, revealing the origins of enantioselectivity. Using the derived kinetics, the enantioselectivity of the overall reaction can be predicted. Hence, this method can offer a rapid discovery and optimization of enantioselective reactions in the future. We illustrate the method for the addition of cyclopentadiene (CP) to an α,β‐unsaturated aldehyde catalyzed by a diarylprolinol silyl ether.
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Affiliation(s)
- Roelant Hilgers
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
- Laboratory of Food Chemistry Wageningen University & Research Bornse Weilanden 9 6708 WG Wageningen The Netherlands
| | - Sin Yong Teng
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Anamarija Briš
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Aleksandr Y. Pereverzev
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Paul White
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Jeroen J. Jansen
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Jana Roithová
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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4
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Costa AM, Castro-Alvarez A, Vilarrasa J, Fillot D. Computational Comparison of the Stability of Iminium Ions and Salts from Enals and Pyrrolidine Derivatives (Aminocatalysts). European J Org Chem 2022. [DOI: 10.1002/ejoc.202200627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anna M. Costa
- Universitat de Barcelona Facultat de Química: Universitat de Barcelona Facultat de Quimica Organic Chemistry Section Av. Diagonal 645 08028 Barcelona SPAIN
| | - Alejandro Castro-Alvarez
- Universidad de la Frontera Facultad de Medicina Ciencias Preclínicas Av. Alemania 0458 4810296 Temuco CHILE
| | - Jaume Vilarrasa
- Universitat de Barcelona Organic Chemistry Section, Fac. Quimica Av. Diagonal 645 08028 Barcelona SPAIN
| | - Daniel Fillot
- Universidad de Barcelona Facultad de Química: Universitat de Barcelona Facultat de Quimica Organic Chemistry Section (Dep. Quim. Inorg. i Org.) Diagonal 645 08028 Barcelona SPAIN
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5
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Ghosh B, Harariya MS, Mukherjee S. Catalytic Enantioselective de novo Construction of Chiral Arenes through Desymmetrizing Oxidative [4+2]‐Cycloaddition. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204523] [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]
Affiliation(s)
- Biki Ghosh
- IISc: Indian Institute of Science Department of Organic Chemistry C V Raman Road 560012 Bangalore INDIA
| | - Mahesh Singh Harariya
- IISc: Indian Institute of Science Department of Organic Chemistry C V Raman Road 560012 Bangalore INDIA
| | - Santanu Mukherjee
- Indian Institute of Science Department of Organic Chemistry C V Raman Avenue 560012 Bangalore INDIA
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6
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Costa AM, Cascales V, Castro-Alvarez A, Vilarrasa J. Computational Study of the Stability of Pyrrolidine-Derived Iminium Ions: Exchange Equilibria between Iminium Ions and Carbonyl Compounds. ACS OMEGA 2022; 7:18247-18258. [PMID: 35694469 PMCID: PMC9178767 DOI: 10.1021/acsomega.1c07020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
The tendency of carbonyl compounds to form iminium ions by reaction with pyrrolidine or chiral pyrrolidine derivatives (in other words, the relative stability to hydrolysis of these iminium ions) has been computationally examined, mainly using the M06-2X/6-311+G(d,p) method. We have thus obtained the equilibrium positions for R-CH=O + CH2=CH-CH=N+R2* → R-CH=N+R2* + CH2=CH-CH=O reactions and for related exchanges. In these exchanges, there is a transfer of a secondary amine between two carbonyl compounds. Their relative energies may be used to predict which iminium species can be predominantly formed when two or more carbonyl groups are present in a reaction medium. In the catalytic Michael additions of nucleophiles to iminium ions arising from conjugated enals, dienals, and trienals, if the formation of the new Nu-C bond is favorable, the chances of amino-catalyzed reactions to efficiently proceed, with high conversions, depend on the calculated energy values for these exchange equilibria, where the iminium tetrafluoroborates of the adducts (final iminium intermediates) must be more prone to hydrolysis than the initial iminium tetrafluoroborates. The density functional theory (DFT) calculations indicate that the MacMillan catalysts and related oxazolidinones are especially suitable in this regard.
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7
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Hilgers R, Teng SY, Bris A, White P, Jansen J, Roithová J. Monitoring Reaction Intermediates to Predict Enantioselectivity Using Mass Spectrometry. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Roelant Hilgers
- Radboud University Institute for Molecules and Materials: Radboud Universiteit Institute for Molecules and Materials Department of Spectroscopy and Catalysis NETHERLANDS
| | - Sin Yong Teng
- Radboud University Institute for Molecules and Materials: Radboud Universiteit Institute for Molecules and Materials Department of Chemometrics NETHERLANDS
| | - Anamarija Bris
- Radboud University Institute for Molecules and Materials: Radboud Universiteit Institute for Molecules and Materials Department of Spectroscopy and Catalysis NETHERLANDS
| | - Paul White
- Radboud University Institute for Molecules and Materials: Radboud Universiteit Institute for Molecules and Materials Department of Spectroscopy and Catalysis NETHERLANDS
| | - Jeroen Jansen
- Radboud University Institute for Molecules and Materials: Radboud Universiteit Institute for Molecules and Materials Department of Chemometrics NETHERLANDS
| | - Jana Roithová
- Radboud University Department of Spectroscopy and Catalysis Heyendaalseweg 135 6525 AJ Nijmegen NETHERLANDS
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8
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Lam CC, Goodman JM. Computational insights on the origin of enantioselectivity in reactions with diarylprolinol silyl ether catalysts via a radical pathway. Org Chem Front 2022. [DOI: 10.1039/d2qo00354f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stereoselective reaction of 1,4-dicarbonyls with diarylprolinol silyl ether catalysts was studied with force field and density functional theory calculations.
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Affiliation(s)
- Ching Ching Lam
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Jonathan M. Goodman
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
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9
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Enantiodivergent synthesis of tricyclic chromans: Remote nucleophilic groups switch selectivity in catalytic asymmetric cascade reactions of trifunctional substrates. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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10
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Urabe D, Fukaya K. Systematic Search for Transition States in Complex Molecules: Computational Analyses of Regio- and Stereoselective Interflavan Bond Formation in Flavan-3-ols. HETEROCYCLES 2021. [DOI: 10.3987/rev-20-943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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11
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Lu JB, Shi CH, Hu D, Gao XY, Chen ZC, Du W, Chen YC. Regioselectivity Umpolung in Asymmetric Diels–Alder Reaction of ortho-Formyl-Substituted Cinnamates and Dienals via Double Aminocatalysis. Org Lett 2020; 23:145-149. [PMID: 33326232 DOI: 10.1021/acs.orglett.0c03862] [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)
- Jian-Bin Lu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Chong-Hui Shi
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Di Hu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xin-Yue Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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12
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Melancon KM, Cundari TR. Computational investigations of NHC-backbone configurations for applications in organocatalytic umpolung reactions. Org Biomol Chem 2020; 18:7437-7447. [PMID: 32940280 DOI: 10.1039/d0ob01267j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Density functional theory (DFT) and multiconfigurational self-consistent field theory (MCSCF) methods are employed to investigate variation of the electronic properties of various N-heterocyclic carbenes. Alterations to the backbone by increased or decreased conjugation, heteroatom substitution in the NHC ring, and electron-donating or -withdrawing backbone substituents are modeled. The MCSCF calculations show extensive delocalization of both the highest occupied and lowest unoccupied molecular orbitals for NHCs with polymerizable backbone substituents. The free energies of the intermediates and transition structures for benzoin condensation are also shown to be sensitive to substitution of the NHC backbone. Taken together, these results imply great sensitivity of the reactivity of poly(NHC) catalysts to backbone modification at this moiety. Implications with respect to enhancement of poly(NHC)s employed in umpolung catalysis are discussed.
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Affiliation(s)
- Kortney M Melancon
- University of North Texas, Department of Chemistry, Denton, Texas 76201, USA.
| | - Thomas R Cundari
- University of North Texas, Department of Chemistry, Denton, Texas 76201, USA.
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13
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Zhang L, Yamazaki K, Leitch JA, Manzano R, Atkinson VAM, Hamlin TA, Dixon DJ. Dual catalytic enantioselective desymmetrization of allene-tethered cyclohexanones. Chem Sci 2020; 11:7444-7450. [PMID: 34123026 PMCID: PMC8159440 DOI: 10.1039/d0sc02878a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 06/23/2020] [Indexed: 11/30/2022] Open
Abstract
The construction of enantioenriched azabicyclo[3.3.1]nonan-6-one heterocycles via an enantioselective desymmetrization of allene-linked cyclohexanones, enabled through a dual catalytic system, that provides synchronous activation of the cyclohexanone with a chiral prolinamide and the allene with a copper(i) co-catalyst to deliver the stereodefined bicyclic core, is described. Successful application to oxygen analogues was also achieved, thereby providing a new enantioselective synthetic entry to architecturally complex bicyclic ethereal frameworks. The mechanistic pathway and the origin of enantio- and diastereoselectivities has been uncovered using density functional theory (DFT) calculations.
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Affiliation(s)
- Lin Zhang
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Ken Yamazaki
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Jamie A Leitch
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Ruben Manzano
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Victoria A M Atkinson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford UK
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14
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Hu S, Wang J, Huang G, Zhu K, Chen F. Organocatalytic Asymmetric Domino Oxa-Michael-Mannich-[1,3]-Amino Rearrangement Reaction of N-Tosylsalicylimines to α,β-Unsaturated Aldehydes by Diarylprolinol Silyl Ethers. J Org Chem 2020; 85:4011-4018. [PMID: 31829579 DOI: 10.1021/acs.joc.9b02939] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An organocatalytic asymmetric enantioselective domino oxa-Michael-Mannich-[1,3]-amino rearrangement reaction of N-tosylsalicylimines with a wide range of α,β-unsaturated aldehydes utilizing diarylprolinol silyl ether catalysis is described. The catalytic reactions proceed with excellent enantioselectivity (up to 99% ee) to produce the corresponding chair N-tosylimines-chromenes with a yield of up to 99%, tolerating a range of functional groups. This methodology offers a new method with great potential to further extend the synthetic power and versatility of chiral aminocatalysis.
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Affiliation(s)
- Sha Hu
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Jiaqi Wang
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Guanxin Huang
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Kejie Zhu
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Fener Chen
- Department of Chemistry, Fudan University, Shanghai 200433, China.,Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, 18 Chao Wang Road, Hangzhou 310014, China
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15
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Asymmetric Remote Addition Reactions of Heterocycle-Based Dearomative Dienamine or Trienamine Species to 1-Azadienes: Application to Construct Chiral Azocanes and Azecanes. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901848] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Jiang W, Zhou J, Ma AJ, Li D, Ma YY, Zhao DG, Hou SH, Lin JB, Zhang SY. A dienamine-mediated deconjugative addition/cyclization cascade of γ,γ-disubstituted enals with carboxylic acid-activated enones: a rapid access to highly functionalized γ-lactones. Org Chem Front 2020. [DOI: 10.1039/c9qo01367a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An aminocatalytic deconjugative addition/cyclization cascade of γ,γ-disubstituted enals with carboxylic acid-activated enones was realized, giving rise to highly functionalized γ-lactones with excellent enantioselectivities.
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Affiliation(s)
- Wei Jiang
- School of Biotechnology and Health Sciences
- International Healthcare Innovation Institute
- Wuyi University
- Jiangmen 529020
- China
| | - Jia Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Ai-Jun Ma
- School of Biotechnology and Health Sciences
- International Healthcare Innovation Institute
- Wuyi University
- Jiangmen 529020
- China
| | - Dongli Li
- School of Biotechnology and Health Sciences
- International Healthcare Innovation Institute
- Wuyi University
- Jiangmen 529020
- China
| | - Yan-Yan Ma
- School of Biotechnology and Health Sciences
- International Healthcare Innovation Institute
- Wuyi University
- Jiangmen 529020
- China
| | - Deng-Gao Zhao
- School of Biotechnology and Health Sciences
- International Healthcare Innovation Institute
- Wuyi University
- Jiangmen 529020
- China
| | - Si-Hua Hou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Jun-Bing Lin
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- College of Chemistry and Chemical Engineering
- Yan'an University
- Yan'an 716000
- China
| | - Shu-Yu Zhang
- School of Biotechnology and Health Sciences
- International Healthcare Innovation Institute
- Wuyi University
- Jiangmen 529020
- China
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17
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Cole CJF, Fuentes L, Snyder SA. Asymmetric pyrone Diels-Alder reactions enabled by dienamine catalysis. Chem Sci 2019; 11:2175-2180. [PMID: 34123308 PMCID: PMC8150114 DOI: 10.1039/c9sc05738b] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Despite the proven value in utilizing pyrone dienes to create molecular complexity via Diels-Alder reactions with varied dienophiles, few examples of effective catalytic, asymmetric variants of this process have been developed. Herein, we show that the use of Jørgensen-Hayashi-type catalysts can convert an array of α,β-unsaturated aldehydes into chiral dienamines that can formally add in a Diels-Alder fashion to a number of electron-deficient pyrones of the coumalate-type to generate optically active [2.2.2]-bicyclic lactones. In most cases, the reactions proceed with good to excellent diastereo- and enantiocontrol (up to 99% ee). Models to explain that stereoselectivity, as well as several additional transformations of the resultant products, are also presented.
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Affiliation(s)
- Charles J F Cole
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Lilia Fuentes
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Scott A Snyder
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
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18
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Abstract
Asymmetric organocatalytic oxidations have been witnessed to an impressive development in the last years thanks to the establishment of important chiral hypervalent iodines(III/V). Many different approaches involving both stoichiometric and catalytic versions have provided a fundamental advance in this area within asymmetric synthesis. The easily handing, nontoxic, mild, environmentally friendly (green oxidants), and high stability that are features of these reagents have been applied to many reactions and also have allowed exploring further unprecedented enantioselective transformations. The intention of the present review is thus to highlight as a whole the many approaches utilized up to date to prepare chiral iodines(III/V), as well as their reactivity in a comprehensive manner.
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Affiliation(s)
- Alejandro Parra
- Facultad de Ciencias, Departamento de Química Orgánica, Institute for Advance Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid , 28049 Madrid , Spain
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19
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Castro-Alvarez A, Carneros H, Calafat J, Costa AM, Marco C, Vilarrasa J. NMR and Computational Studies on the Reactions of Enamines with Nitroalkenes That May Pass through Cyclobutanes. ACS OMEGA 2019; 4:18167-18194. [PMID: 31720519 PMCID: PMC6844152 DOI: 10.1021/acsomega.9b02074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 10/10/2019] [Indexed: 06/10/2023]
Abstract
The addition of aldehyde enamines to nitroalkenes affords cyclobutanes in all solvents, with all of the pyrrolidine and proline derivatives tested by us and with all of the substrates we have examined. Depending on the temperature, concentration of water, solvent polarity, and other factors, the opening and hydrolysis of such a four-membered ring may take place rapidly or last for several days, producing the final Michael-like adducts (4-nitrobutanals). Thirteen new cyclobutanes have now been characterized by NMR spectroscopy. As could be expected, s-trans-enamine conformers give rise to all-trans-(4S)-4-nitrocyclobutylpyrrolidines, while s-cis-enamine conformers afford all-trans-(4R)-4-nitrocyclobutylpyrrolidines. These four-membered rings can isomerize to adduct enamines, which should be hydrolyzed via their iminium ions. MP2 and M06-2X calculations predict that one iminium ion is more stable than the other iminium species, so that protonation of the adduct enamines can be quite stereoselective; in the presence of water, the so-called syn adducts (e.g., OCH-*CHR-*CHPh-CH2NO2, with R and Ph syn) eventually become the major products. Why one syn adduct is obtained with aldehydes, whereas cyclic ketones (the predicted ring-fused cyclobutanes of which isomerize to their enamines more easily) produce the other syn adduct, is also explained by means of molecular orbital calculations. Nitro-Michael reactions of aldehyde enamines that "stop" at the nitrocyclobutane stage and final enamine stage do not work catalytically, as known, but those of cyclic ketone enamines that do not work stop at the final enamine stage (if their hydrolysis to the corresponding nitroethylketones is less favorable than expected). These and other facts are accounted for, and the proposals of the groups led by Seebach and Hayashi, Blackmond, and Pihko and Papai are reconciled.
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20
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Dyguda M, Przydacz A, Krzemińska A, Albrecht Ł. On the origins of stereoselectivity in the aminocatalytic remote alkylation of 5-alkylfurfurals. Org Biomol Chem 2019; 17:6025-6031. [PMID: 31161185 DOI: 10.1039/c9ob00914k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the manuscript, computational studies on the remote alkylation of 5-alkylfurfurals proceeding via formation of the corresponding trienamine intermediate are presented. By the means of density functional theory (DFT) calculations and the symmetry-adapted perturbation theory (SAPT) method, interesting insights into the mechanism of the reaction have been provided explaining the influence and contribution of different molecular interactions on the observed reactivity as well as on the enantio- and diastereoselectivity of the process. The studies have been extended to the thiophene analogue of the starting furfural derivative and the results obtained verified experimentally.
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Affiliation(s)
- Mateusz Dyguda
- Institute of Organic Chemistry, Department of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
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21
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Inoshita T, Goshi K, Morinaga Y, Umeda Y, Ishikawa H. Enantioselective Construction of Octahydroquinolines via Trienamine-Mediated Diels-Alder Reactions. Org Lett 2019; 21:2903-2907. [PMID: 30950281 DOI: 10.1021/acs.orglett.9b00932] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A trienamine-mediated asymmetric Diels-Alder reaction using a 5-nitro-2,3-dihydro-4-pyridone derivative as a dienophile in the presence of a secondary amine organocatalyst derived from cis-hydroxyproline was discovered. The reaction provides optically active octahydroquinolines through an endo-selective [4 + 2] cyclization pathway. The following stereoselective denitration, isomerization, and/or hydrogenation generated divergent stereoisomers of decahydroquinolines, which are useful synthons for the total synthesis of Lycopodium alkaloids.
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Affiliation(s)
- Taichi Inoshita
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Kei Goshi
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Yuka Morinaga
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Yuhei Umeda
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Hayato Ishikawa
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan.,Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
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22
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Putatunda S, Alegre-Requena JV, Meazza M, Franc M, Rohal'ová D, Vemuri P, Císařová I, Herrera RP, Rios R, Veselý J. Proline bulky substituents consecutively act as steric hindrances and directing groups in a Michael/Conia-ene cascade reaction under synergistic catalysis. Chem Sci 2019; 10:4107-4115. [PMID: 31015949 PMCID: PMC6457335 DOI: 10.1039/c8sc05258a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/03/2019] [Indexed: 12/23/2022] Open
Abstract
In this study, we report a highly stereoselective and versatile synthesis of spiro pyrazolones, promising motifs that are being employed as pharmacophores. The new synthetic strategy merges organocatalysis and metal catalysis to create a synergistic catalysis using proline derivatives and Pd catalysts. This protocol is suitable for late-stage functionalization, which is very important in drug discovery. Additionally, a thorough computational study proved to be very useful to elucidate the function of the different catalysts along the reaction, showing a peculiar feature: the -CPh2OSiMe3 group of the proline catalyst switches its role during the reaction. In the initial Michael reaction, this group plays its commonly-assumed role of bulky blocking group, but the same group generates π-Pd interactions and acts as a directing group in the subsequent Pd-catalyzed Conia-ene reaction. This finding might be very relevant especially for processes with many steps, such as cascade reactions, in which functional groups are assumed to play the same role during all reaction steps.
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Affiliation(s)
- Salil Putatunda
- Department of Organic Chemistry , Faculty of Science , Charles University , Hlavova 2030 , 128 43 Praha 2 , Czech Republic .
| | - Juan V Alegre-Requena
- Laboratorio de Organocatálisis Asimétrica , Departamento de Química Orgánica , Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) , CSIC-Universidad de Zaragoza , C/Pedro Cerbuna 12 , 50009 Zaragoza , Spain .
| | - Marta Meazza
- University of Southampton , School of Chemistry , Highfield Campus , Southampton , SO17 1BJ , UK .
| | - Michael Franc
- Department of Organic Chemistry , Faculty of Science , Charles University , Hlavova 2030 , 128 43 Praha 2 , Czech Republic .
| | - Dominika Rohal'ová
- Department of Organic Chemistry , Faculty of Science , Charles University , Hlavova 2030 , 128 43 Praha 2 , Czech Republic .
| | - Pooja Vemuri
- University of Southampton , School of Chemistry , Highfield Campus , Southampton , SO17 1BJ , UK .
| | - Ivana Císařová
- Department of Inorganic Chemistry , Faculty of Science , Charles University , Hlavova 2030 , 128 43 Praha 2 , Czech Republic
| | - Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica , Departamento de Química Orgánica , Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) , CSIC-Universidad de Zaragoza , C/Pedro Cerbuna 12 , 50009 Zaragoza , Spain .
| | - Ramon Rios
- University of Southampton , School of Chemistry , Highfield Campus , Southampton , SO17 1BJ , UK .
| | - Jan Veselý
- Department of Organic Chemistry , Faculty of Science , Charles University , Hlavova 2030 , 128 43 Praha 2 , Czech Republic .
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23
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Reyes-Rodríguez GJ, Rezayee NM, Vidal-Albalat A, Jørgensen KA. Prevalence of Diarylprolinol Silyl Ethers as Catalysts in Total Synthesis and Patents. Chem Rev 2019; 119:4221-4260. [DOI: 10.1021/acs.chemrev.8b00583] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Nomaan M. Rezayee
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
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24
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Dai QS, Zhang X, Yang KC, Li MH, Yang J, Li QZ, Feng X, Han B, Li JL. Chiral Amine-Catalyzed Stereoselective [4+2] Annulations of Alkenyl Thiazolones and Aliphatic Aldehydes via
a Step-Wise Mechanism. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800806] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qing-Song Dai
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Xiang Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Kai-Chuan Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Mao-Hua Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Jie Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Qing-Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Xin Feng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources; Chengdu University of Traditional Chinese Medicine; Chengdu 611137 PR China
| | - Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
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25
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Lai J, Sayalero S, Ferrali A, Osorio-Planes L, Bravo F, Rodríguez-Escrich C, Pericàs MA. Immobilization of cis
-4-Hydroxydiphenylprolinol Silyl Ethers onto Polystyrene. Application in the Catalytic Enantioselective Synthesis of 5-Hydroxyisoxazolidines in Batch and Flow. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800572] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Junshan Lai
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans, 16 43007 Tarragona Spain
- Universitat Rovira i Virgili; Departament de Química Analítica i Química Orgànica; c/Marcel⋅lí Domingo, 1 43007 Tarragona Spain
| | - Sonia Sayalero
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans, 16 43007 Tarragona Spain
| | - Alessandro Ferrali
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans, 16 43007 Tarragona Spain
| | - Laura Osorio-Planes
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans, 16 43007 Tarragona Spain
| | - Fernando Bravo
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans, 16 43007 Tarragona Spain
| | - Carles Rodríguez-Escrich
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans, 16 43007 Tarragona Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans, 16 43007 Tarragona Spain
- Departament de Química Inorgànica i Orgànica; Universitat de Barcelona (UB); 08028 Barcelona Spain
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26
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Li M, Sang Y, Xue XS, Cheng JP. Origin of Stereocontrol in Photoredox Organocatalysis of Asymmetric α-Functionalizations of Aldehydes. J Org Chem 2018; 83:3333-3338. [DOI: 10.1021/acs.joc.8b00469] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Man Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Yueqian Sang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xiao-Song Xue
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
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27
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Peng S, Wang Z, Zhang L, Zhang X, Huang Y. Streamlined asymmetric α-difunctionalization of ynones. Nat Commun 2018; 9:375. [PMID: 29371601 PMCID: PMC5785506 DOI: 10.1038/s41467-017-02801-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 12/28/2017] [Indexed: 01/01/2023] Open
Abstract
Ynones are a unique class of structural motifs that show remarkable chemical versatility. Chiral ynones, particularly those possessing an α-stereogenic center, are highly attractive templates for structural diversification. So far, only very limited examples have been reported for asymmetric α-functionalization of ynones. Asymmetric double α-functionalization of ynones remains elusive. Here we describe a streamlined strategy for asymmetric α-difunctionalization of ynones. We developed a gold-catalyzed multicomponent condensation reaction from a simple ynone, an amine, and an electrophilic alkynylating reagent to generate a 1,2-dialkynyl enamine, a key stable and isolable intermediate. This intermediate can undergo asymmetric fluorination catalyzed by a chiral phosphoric acid derivative. Chiral ynones with an α-quaternary carbon and containing a fluorine and an alkyne can be synthesized in high yield and high ee. The synthetic utility of this method is demonstrated by the synthesis of enantioenriched tri(hetero)arylmethyl fluorides. Chiral ynones with an α-quaternary carbon are attractive synthetic building blocks for natural and pharmaceutical products. Here, the authors report an asymmetric α-difunctionalization of simple ynones, involving a gold-catalyzed step and yielding enantioenriched fluorinated quaternary stereocentres.
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Affiliation(s)
- Siyu Peng
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, 518055, Shenzhen, China
| | - Zhaofeng Wang
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, 518055, Shenzhen, China
| | - Linxing Zhang
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, 518055, Shenzhen, China
| | - Xinhao Zhang
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, 518055, Shenzhen, China
| | - Yong Huang
- Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, 518055, Shenzhen, China.
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28
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Patil M. Stereocontrol through Synergistic Catalysis in the Enantioselective α-Alkenylation of Aldehyde: A Computational Study. J Org Chem 2018; 83:1304-1311. [DOI: 10.1021/acs.joc.7b02822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mahendra Patil
- UM-DAE Centre for Excellence
in Basic Sciences, Health Centre, University of Mumbai, Vidyanagari
Campus, Kalina, Santacruz (East), Mumbai 400098, India
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29
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Świderek K, Nödling AR, Tsai YH, Luk LYP, Moliner V. Reaction Mechanism of Organocatalytic Michael Addition of Nitromethane to Cinnamaldehyde: A Case Study on Catalyst Regeneration and Solvent Effects. J Phys Chem A 2018; 122:451-459. [PMID: 29256614 PMCID: PMC5785706 DOI: 10.1021/acs.jpca.7b11803] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
![]()
The Michael addition
of nitromethane to cinnamaldehyde has been
computationally studied in the absence of a catalyst and the presence
of a biotinylated secondary amine by a combined computational and
experimental approach. The calculations were performed at the density
functional theory (DFT) level with the M06-2X hybrid functional, and
a polarizable continuum model has been employed to mimic the effect
of two different solvents: dichloromethane (DCM) and water. Contrary
to common assumption, the product-derived iminium intermediate was
absent in both of the solvents tested. Instead, hydrating the C1–C2
double bond in the enamine intermediate directly yields the tetrahedral
intermediate, which is key for forming the product and regenerating
the catalyst. Enamine hydration is concerted and found to be rate-limiting
in DCM but segregated into two non-rate-limiting steps when the solvent
is replaced with water. However, further analysis revealed that the
use of water as solvent also raises the energy barriers for other
chemical steps, particularly the critical step of C–C bond
formation between the iminium intermediate and nucleophile; this consequently
lowers both the reaction yield and enantioselectivity of this LUMO-lowering
reaction, as experimentally detected. These findings provide a logical
explanation to why water often enhances organocatalysis when used
as an additive but hampers the reaction progress when employed as
a solvent.
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Affiliation(s)
- Katarzyna Świderek
- Departament de Química Física i Analítica, Universitat Jaume I , 12071 Castellón, Spain
| | | | - Yu-Hsuan Tsai
- School of Chemistry, Cardiff University , CF10 3AT Cardiff, United Kingdom
| | - Louis Y P Luk
- School of Chemistry, Cardiff University , CF10 3AT Cardiff, United Kingdom
| | - Vicent Moliner
- Departament de Química Física i Analítica, Universitat Jaume I , 12071 Castellón, Spain.,School of Chemistry, University of Bath , BA2 7AY Bath, United Kingdom
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30
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Wu X, Zhu HJ, Zhao SB, Chen SS, Luo YF, Li YG. An Asymmetric Dehydrogenative Diels–Alder Reaction for the Synthesis of Chiral Tetrahydrocarbazole Derivatives. Org Lett 2017; 20:32-35. [DOI: 10.1021/acs.orglett.7b03251] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiang Wu
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hai-Jie Zhu
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Shi-Bao Zhao
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Shu-Sen Chen
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yun-Fei Luo
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - You-Gui Li
- Anhui
Province Key Laboratory of Advanced Catalytic Materials and Reaction
Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
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31
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Földes T, Madarász Á, Révész Á, Dobi Z, Varga S, Hamza A, Nagy PR, Pihko PM, Pápai I. Stereocontrol in Diphenylprolinol Silyl Ether Catalyzed Michael Additions: Steric Shielding or Curtin–Hammett Scenario? J Am Chem Soc 2017; 139:17052-17063. [DOI: 10.1021/jacs.7b07097] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Tamás Földes
- Institute
of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Ádám Madarász
- Institute
of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Ágnes Révész
- Institute
of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Zoltán Dobi
- Institute
of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Szilárd Varga
- Institute
of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Andrea Hamza
- Institute
of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Péter R. Nagy
- MTA-BME
Lendület Quantum Chemistry Research Group, Department of Physical
Chemistry and Materials Science, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary
| | - Petri M. Pihko
- Department
of Chemistry and NanoScience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Imre Pápai
- Institute
of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
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32
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Li M, Xue XS, Cheng JP. Mechanism and Origins of Stereoinduction in Natural Cinchona Alkaloid Catalyzed Asymmetric Electrophilic Trifluoromethylthiolation of β-Keto Esters with N-Trifluoromethylthiophthalimide as Electrophilic SCF3 Source. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Man Li
- State
Key Laboratory of Elemento-Organic Chemistry, College of Chemistry,
Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| | - Xiao-Song Xue
- State
Key Laboratory of Elemento-Organic Chemistry, College of Chemistry,
Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| | - Jin-Pei Cheng
- State
Key Laboratory of Elemento-Organic Chemistry, College of Chemistry,
Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
- Center
of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
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33
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Husch T, Seebach D, Beck AK, Reiher M. Rigorous Conformational Analysis of Pyrrolidine Enamines with Relevance to Organocatalysis. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700182] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Tamara Husch
- Laboratorium für Physikalische Chemie ETH Zürich Vladimir‐Prelog‐Weg 3 8093 Zürich Switzerland
| | - Dieter Seebach
- Laboratorium für Organische Chemie ETH Zürich Vladimir‐Prelog‐Weg 2 8093 Zürich Switzerland
| | - Albert K. Beck
- Laboratorium für Organische Chemie ETH Zürich Vladimir‐Prelog‐Weg 2 8093 Zürich Switzerland
| | - Markus Reiher
- Laboratorium für Physikalische Chemie ETH Zürich Vladimir‐Prelog‐Weg 3 8093 Zürich Switzerland
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34
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Gérard H, Chataigner I. Vinyl (Thio)Ethers versus Enamines: A DFT Insight into Their Divergent Reactivities toward Nitroalkenes. Chemistry 2017; 23:13711-13717. [DOI: 10.1002/chem.201701961] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Hélène Gérard
- Sorbonne Université, UPMC Univ Paris 06; CNRS; UMR 7616 Laboratoire de Chimie Théorique; 75005 Paris France
| | - Isabelle Chataigner
- Normandie Univ; UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014); 76000 Rouen France
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35
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Bhaskararao B, Sunoj RB. Asymmetric Dual Chiral Catalysis using Iridium Phosphoramidites and Diarylprolinol Silyl Ethers: Insights into Stereodivergence. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02776] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bangaru Bhaskararao
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Raghavan B. Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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36
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Eichstaedt K, Jaramillo-Garcia J, Leigh DA, Marcos V, Pisano S, Singleton TA. Switching between Anion-Binding Catalysis and Aminocatalysis with a Rotaxane Dual-Function Catalyst. J Am Chem Soc 2017. [DOI: 10.1021/jacs.7b04955] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Katarzyna Eichstaedt
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | | | - David A. Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Vanesa Marcos
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Simone Pisano
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Thomas A. Singleton
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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37
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Manzano R, Datta S, Paton RS, Dixon DJ. Enantioselective Silver and Amine Co-catalyzed Desymmetrizing Cycloisomerization of Alkyne-Linked Cyclohexanones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612048] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rubén Manzano
- Department of Chemistry, Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
| | - Swarup Datta
- Department of Chemistry, Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
| | - Robert S. Paton
- Department of Chemistry, Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
| | - Darren J. Dixon
- Department of Chemistry, Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
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38
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Manzano R, Datta S, Paton RS, Dixon DJ. Enantioselective Silver and Amine Co-catalyzed Desymmetrizing Cycloisomerization of Alkyne-Linked Cyclohexanones. Angew Chem Int Ed Engl 2017; 56:5834-5838. [PMID: 28429384 DOI: 10.1002/anie.201612048] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 03/02/2017] [Indexed: 01/23/2023]
Abstract
A silver(I) and amine co-catalyzed desymmetrization of 4-propargylamino cyclohexanones for the direct enantioselective synthesis of 2-azabicyclo[3.3.1]nonanes is described. Exploiting reactivity arising from dual activation of the pendant terminal alkyne by silver(I) and the ketone moiety through transient enamine formation, this synthetically relevant transformation is easy to perform, efficient and broad in scope. High enantioselectivity (up to 96 % ee) was achieved by exploiting a significant matching effect between the chirality of a cinchona alkaloid-derived aminophosphine ligand for the silver(I) salt and the 2-bis(aryl)methylpyrrolidine catalyst which was rationalized by DFT calculations. This allowed for the preparation of both enantiomers of the bicyclic product with near-identical stereocontrol.
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Affiliation(s)
- Rubén Manzano
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Swarup Datta
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Robert S Paton
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
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39
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Klier L, Tur F, Poulsen PH, Jørgensen KA. Asymmetric cycloaddition reactions catalysed by diarylprolinol silyl ethers. Chem Soc Rev 2017; 46:1080-1102. [DOI: 10.1039/c6cs00713a] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Organocatalysis as a paint palette for asymmetric cycloaddition reactions.
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Affiliation(s)
- Lydia Klier
- Department of Chemistry
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Fernando Tur
- Department of Chemistry
- Aarhus University
- DK-8000 Aarhus C
- Denmark
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40
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Seguin TJ, Wheeler SE. Stacking and Electrostatic Interactions Drive the Stereoselectivity of Silylium-Ion Asymmetric Counteranion-Directed Catalysis. Angew Chem Int Ed Engl 2016; 55:15889-15893. [DOI: 10.1002/anie.201609095] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 10/21/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Trevor J. Seguin
- Department of Chemistry; Texas A&M University; College Station TX 77842 USA
| | - Steven E. Wheeler
- Department of Chemistry; Texas A&M University; College Station TX 77842 USA
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41
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Seguin TJ, Wheeler SE. Stacking and Electrostatic Interactions Drive the Stereoselectivity of Silylium-Ion Asymmetric Counteranion-Directed Catalysis. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609095] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Trevor J. Seguin
- Department of Chemistry; Texas A&M University; College Station TX 77842 USA
| | - Steven E. Wheeler
- Department of Chemistry; Texas A&M University; College Station TX 77842 USA
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42
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Marzo L, Luis-Barrera J, Mas-Ballesté R, Ruano JLG, Alemán J. Stereodivergent Aminocatalytic Synthesis of Z- and E-Trisubstituted Double Bonds from Alkynals. Chemistry 2016; 22:16467-16477. [PMID: 27759177 DOI: 10.1002/chem.201603437] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Indexed: 11/11/2022]
Abstract
A highly diastereoselective synthesis of trisubstituted Z- or E-enals, which are important intermediates in organic synthesis, as well as being present in natural products, is described using different alkynals and nucleophiles as starting materials. Diastereocontrol is mainly governed by the appropriate catalyst. Therefore, those reactions controlled by steric effects, such as the Jørgensen-Hayashi's catalyst, give access to E isomers, and those catalysts that facilitate hydrogen bonding, such as tetrazol-pyrrolidine Ley's catalyst, allow the synthesis of Z isomers. A stereochemical model based on DFT calculations is proposed.
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Affiliation(s)
- Leyre Marzo
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
| | - Javier Luis-Barrera
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
| | - Rubén Mas-Ballesté
- Departamento de Química Inorgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
| | - José Luis García Ruano
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
| | - José Alemán
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain.
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43
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McLeod D, McNulty J. DualPhos: a versatile, chemoselective reagent for two-carbon aldehyde to latent ( E)-alkenal homologation and application in the total synthesis of phomolide G. ROYAL SOCIETY OPEN SCIENCE 2016; 3:160374. [PMID: 28018615 PMCID: PMC5180113 DOI: 10.1098/rsos.160374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 10/07/2016] [Indexed: 06/06/2023]
Abstract
Advances on the use of the 2-pinacolacetal-tripropylphosphonium salt DualPhos as a general reagent for the two-carbon aldehyde to alkenal homologation and a chemoselective iron (III) chloride mediated deprotection are described. The strategy allows isolation of the latent alkenal intermediates or direct hydrolysis to (E)-alkenals. The robust chemical stability of the latent alkenals is demonstrated in a total synthesis of the macrolactone phomolide G.
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44
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Doney AC, Rooks BJ, Lu T, Wheeler SE. Design of Organocatalysts for Asymmetric Propargylations through Computational Screening. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02366] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Analise C. Doney
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Benjamin J. Rooks
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Tongxiang Lu
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Steven E. Wheeler
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
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