1
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Michalak M, Czerwiński P, Śniady-Maciążek K, Musioł S, Danylyuk O, Wierzbicki M, Tomasini M, Poater A. Chiral NHC Ligands for Enantioselective Gold(I) Catalysis Under Aerobic Conditions: the Importance of Conformational Flexibility and Steric Hindrance of NHC Ligand on Reactivity. Chemistry 2023:e202303241. [PMID: 38126930 DOI: 10.1002/chem.202303241] [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: 10/03/2023] [Revised: 11/28/2023] [Accepted: 12/18/2023] [Indexed: 12/23/2023]
Abstract
Gold(I) catalysis has been recognized as a valuable tool for the unique transformation of multiple carbon-carbon bonds. Enantioselective π-catalysis based on gold(I) complexes is, however, still underdeveloped due to lack of privileged ligands. Herein, we present an accessible method to a new family of stable yet catalytically active chiral NHC-Au(I)-Cl complexes. The key to preserving a simultaneous fine balance between reactivity and stability in this newly developed family appears to be sterically hindered, but conformationally flexible NHC ligands. These could be easily accessed on a multigram scale by merging sterically hindered anilines with commercially available amino alcohols and amines via a four-steps synthetic sequence without the need for chromatographic purification. Further investigations of the catalytic activity of NHC-Au-Cl complexes identified the OH functionality incorporated into the NHC core as crucial for the level of enantioselectivity as well as the TsO- anion responsible for the activation of NHC-Au(I)-Cl. Finally, NMR studies and X-ray investigations revealed for the first time that the widely accepted ion metathesis (NHC-Au-Cl to NHC-Au-OSO2 R) responsible for the activation of NHC-Au-Cl complexes does not take place (or it is very slow) in commonly used MeNO2 in contrast to DCM.
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Affiliation(s)
- Michał Michalak
- Polish Academy of Sciences, Institute of Organic Chemistry, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Paweł Czerwiński
- Polish Academy of Sciences, Institute of Organic Chemistry, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | | | - Szymon Musioł
- Polish Academy of Sciences, Institute of Organic Chemistry, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Oksana Danylyuk
- Polish Academy of Sciences, Institute of Physical Chemistry, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Michał Wierzbicki
- Polish Academy of Sciences, Institute of Organic Chemistry, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Michele Tomasini
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, c/M. Aurèlia Capmany 69, 17003, Girona, Catalonia, Spain
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, c/M. Aurèlia Capmany 69, 17003, Girona, Catalonia, Spain
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2
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Pellissier H. TADDOL-derived phosphorus ligands in asymmetric catalysis. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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3
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Kennemur J, Maji R, Scharf MJ, List B. Catalytic Asymmetric Hydroalkoxylation of C-C Multiple Bonds. Chem Rev 2021; 121:14649-14681. [PMID: 34860509 PMCID: PMC8704240 DOI: 10.1021/acs.chemrev.1c00620] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Indexed: 01/30/2023]
Abstract
Asymmetric hydroalkoxylation of alkenes constitutes a redox-neutral and 100% atom-economical strategy toward enantioenriched oxygenated building blocks from readily available starting materials. Despite their great potential, catalytic enantioselective additions of alcohols across a C-C multiple bond are particularly underdeveloped, especially compared to other hydrofunctionalization methods such as hydroamination. However, driven by some recent innovations, e.g., asymmetric MHAT methods, asymmetric photocatalytic methods, and the development of extremely strong chiral Brønsted acids, there has been a gratifying surge of reports in this burgeoning field. The goal of this review is to survey the growing landscape of asymmetric hydroalkoxylation by highlighting exciting new advances, deconstructing mechanistic underpinnings, and drawing insight from related asymmetric hydroacyloxylation and hydration. A deep appreciation of the underlying principles informs an understanding of the various selectivity parameters and activation modes in the realm of asymmetric alkene hydrofunctionalization while simultaneously evoking the outstanding challenges to the field moving forward. Overall, we aim to lay a foundation for cross-fertilization among various catalytic fields and spur further innovation in asymmetric hydroalkoxylations of C-C multiple bonds.
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Affiliation(s)
| | | | - Manuel J. Scharf
- Max-Planck-Institut für
Kohlenforschung, Kaiser Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für
Kohlenforschung, Kaiser Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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4
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Martinez T, Vanitcha A, Troufflard C, Vanthuyne N, Forté J, Gontard G, Lemière G, Mouriès‐Mansuy V, Fensterbank L. Indolizy Carbene Ligand. Evaluation of Electronic Properties and Applications in Asymmetric Gold(I) Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106142] [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)
- Thibaut Martinez
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Avassaya Vanitcha
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Claire Troufflard
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Nicolas Vanthuyne
- Aix Marseille Univ CNRS Centrale Marseille, iSm2 13397 Marseille Cedex 20 France
| | - Jérémy Forté
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Gilles Lemière
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Virginie Mouriès‐Mansuy
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire Sorbonne Université CNRS 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
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5
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Martinez T, Vanitcha A, Troufflard C, Vanthuyne N, Forté J, Gontard G, Lemière G, Mouriès-Mansuy V, Fensterbank L. Indolizy Carbene Ligand. Evaluation of Electronic Properties and Applications in Asymmetric Gold(I) Catalysis. Angew Chem Int Ed Engl 2021; 60:19879-19888. [PMID: 34243222 DOI: 10.1002/anie.202106142] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/21/2021] [Indexed: 11/05/2022]
Abstract
We report herein a new family of carbene ligands based on an indolizine-ylidene (Indolizy) moiety. The corresponding gold(I) complexes are easily obtained from the gold(I)-promoted cyclization of allenylpyridine precursors. Evaluation of the electronic properties by experimental methods and also by DFT calculations confirms strong σ-donating and π-accepting properties of these ligands. Cationization of the gold(I) complexes generates catalytic species that trigger diverse reactions of (poly)unsaturated precursors. When armed with a methylene phosphine oxide moiety on the stereogenic center adjacent to the nitrogen atom, the corresponding bifunctional carbene ligands give rise to highly enantioselective heterocyclizations. DFT calculations brought some rationalization and highlighted the critical roles played by the phosphine oxide group and the tosylate anion in the asymmetric cyclization of γ-allenols.
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Affiliation(s)
- Thibaut Martinez
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Avassaya Vanitcha
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Claire Troufflard
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397, Marseille Cedex 20, France
| | - Jérémy Forté
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Gilles Lemière
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Virginie Mouriès-Mansuy
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, CC 229, 75252, Paris Cedex 05, France
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6
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Alonso JM, Almendros P. Deciphering the Chameleonic Chemistry of Allenols: Breaking the Taboo of a Onetime Esoteric Functionality. Chem Rev 2021; 121:4193-4252. [PMID: 33630581 PMCID: PMC8479864 DOI: 10.1021/acs.chemrev.0c00986] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Indexed: 12/19/2022]
Abstract
The allene functionality has participated in one of the most exciting voyages in organic chemistry, from chemical curiosities to a recurring building block in modern organic chemistry. In the last decades, a special kind of allene, namely, allenol, has emerged. Allenols, formed by an allene moiety and a hydroxyl functional group with diverse connectivity, have become common building blocks for the synthesis of a wide range of structures and frequent motif in naturally occurring systems. The synergistic effect of the allene and hydroxyl functional groups enables allenols to be considered as a unique and sole functionality exhibiting a special reactivity. This Review summarizes the most significant contributions to the chemistry of allenols that appeared during the past decade, with emphasis on their synthesis, reactivity, and occurrence in natural products.
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Affiliation(s)
- José M. Alonso
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Pedro Almendros
- Instituto
de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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7
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Chen D, Berhane IA, Chemler SR. Copper-Catalyzed Enantioselective Hydroalkoxylation of Alkenols for the Synthesis of Cyclic Ethers. Org Lett 2020; 22:7409-7414. [PMID: 32496794 PMCID: PMC7541751 DOI: 10.1021/acs.orglett.0c01691] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The copper-catalyzed enantioselective intramolecular hydroalkoxylation of unactivated alkenes for the synthesis of tetrahydrofurans, phthalans, isochromans, and morpholines from 4- and 5-alkenols is reported. The substrate scope is complementary to existing enantioselective alkene hydroalkoxylations and is broad with respect to substrate backbone and alkene substitution. The asymmetric induction and isotopic labeling studies support a polar/radical mechanism involving enantioselective oxycupration followed by C-[Cu] homolysis and hydrogen atom transfer. Synthesis of the antifungal insecticide furametpyr was accomplished.
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Affiliation(s)
- Dake Chen
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Ilyas A Berhane
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Sherry R Chemler
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
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8
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Abstract
N-Heterocyclic carbenes have found many applications in modern metal catalysis, due to the formation of stable metal complexes, and organocatalysis. Among a myriad of N-heterocyclic carbene metal complexes, gold complexes have gained a lot of attention due to their unique propensity for the activation of carbon-carbon multiple bonds, allowing many useful transformations of alkynes, allenes, and alkenes, inaccessible by other metal complexes. The present review summarizes synthetic efforts towards the preparation of chiral N-heterocyclic gold(I) complexes exhibiting C2 and C1 symmetry, as well as their applications in enantioselective catalysis. Finally, the emerging area of rare gold(III) complexes and their preliminary usage in asymmetric catalysis is also presented.
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9
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Force G, Ki YLT, Isaac K, Retailleau P, Marinetti A, Betzer JF. Paracyclophane-based Silver Phosphates as Catalysts for Enantioselective Cycloisomerization/Addition Reactions: Synthesis of Bicyclic Furans. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800587] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Guillaume Force
- Institut de Chimie des Substances Naturelles, ICSN-CNRS UPR 2301, Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette FRANCE
| | - Yvette Lock Toy Ki
- Institut de Chimie des Substances Naturelles, ICSN-CNRS UPR 2301, Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette FRANCE
| | - Kévin Isaac
- Institut de Chimie des Substances Naturelles, ICSN-CNRS UPR 2301, Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette FRANCE
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, ICSN-CNRS UPR 2301, Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette FRANCE
| | - Angela Marinetti
- Institut de Chimie des Substances Naturelles, ICSN-CNRS UPR 2301, Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette FRANCE
| | - Jean-François Betzer
- Institut de Chimie des Substances Naturelles, ICSN-CNRS UPR 2301, Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette FRANCE
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10
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11
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Peng Q, Duarte F, Paton RS. Computing organic stereoselectivity - from concepts to quantitative calculations and predictions. Chem Soc Rev 2018; 45:6093-6107. [PMID: 27722685 DOI: 10.1039/c6cs00573j] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Advances in theory and processing power have established computation as a valuable interpretative and predictive tool in the discovery of new asymmetric catalysts. This tutorial review outlines the theory and practice of modeling stereoselective reactions. Recent examples illustrate how an understanding of the fundamental principles and the application of state-of-the-art computational methods may be used to gain mechanistic insight into organic and organometallic reactions. We highlight the emerging potential of this computational tool-box in providing meaningful predictions for the rational design of asymmetric catalysts. We present an accessible account of the field to encourage future synergy between computation and experiment.
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Affiliation(s)
- Qian Peng
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK. and Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
| | - Fernanda Duarte
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK. and Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
| | - Robert S Paton
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK. and Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
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12
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Wang Z, Nicolini C, Hervieu C, Wong YF, Zanoni G, Zhang L. Remote Cooperative Group Strategy Enables Ligands for Accelerative Asymmetric Gold Catalysis. J Am Chem Soc 2017; 139:16064-16067. [DOI: 10.1021/jacs.7b09136] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zhixun Wang
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Corrado Nicolini
- Department
of Chemistry, University of Pavia, Viale Taramelli, 10, 27100 Pavia, Italy
| | - Cedric Hervieu
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Yuk-Fai Wong
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Giuseppe Zanoni
- Department
of Chemistry, University of Pavia, Viale Taramelli, 10, 27100 Pavia, Italy
| | - Liming Zhang
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
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13
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Abstract
This review collects the major progress in the field of enantioselective transformations promoted by chiral silver catalysts, covering the literature since 2008, well illustrating the power of these especially mild Lewis acid catalysts to provide novel asymmetric reactions.
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Affiliation(s)
- Hélène Pellissier
- Aix Marseille Univ., CNRS , Centrale Marseille, iSm2, Marseille, France
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14
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Wong VHL, Vummaleti SVC, Cavallo L, White AJP, Nolan SP, Hii KKM. Synthesis, Structure and Catalytic Activity of NHC-AgI
Carboxylate Complexes. Chemistry 2016; 22:13320-7. [DOI: 10.1002/chem.201601762] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Valerie H. L. Wong
- Department of Chemistry; Imperial College London; Exhibition Road, South Kensington London SW7 2AZ UK
- Department of Chemistry; National University of Singapore; 3 Science Drive Kent Ridge Crescent Singapore
| | - Sai V. C. Vummaleti
- KAUST Catalysis Centre; Physical Sciences and Engineering Division; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- KAUST Catalysis Centre; Physical Sciences and Engineering Division; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Andrew J. P. White
- Department of Chemistry; Imperial College London; Exhibition Road, South Kensington London SW7 2AZ UK
| | - Steven P. Nolan
- Chemistry Department, College of Science; King Saud University; Riyadh 11451 Saudi Arabia
- Department of Inorganic and Physical Chemistry; Universiteit Gent; Krijgslaan 281 - S3 9000 Ghent Belgium
| | - King Kuok Mimi Hii
- Department of Chemistry; Imperial College London; Exhibition Road, South Kensington London SW7 2AZ UK
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15
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Haydl AM, Berthold D, Spreider PA, Breit B. Stereodivergent and Protecting-Group-Free Synthesis of the Helicascolide Family: A Rhodium-Catalyzed Atom-Economical Lactonization Strategy. Angew Chem Int Ed Engl 2016; 55:5765-9. [DOI: 10.1002/anie.201600632] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Alexander M. Haydl
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Dino Berthold
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Pierre A. Spreider
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
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16
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Haydl AM, Berthold D, Spreider PA, Breit B. Stereodivergent and Protecting-Group-Free Synthesis of the Helicascolide Family: A Rhodium-Catalyzed Atom-Economical Lactonization Strategy. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600632] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Alexander M. Haydl
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Dino Berthold
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Pierre A. Spreider
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
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17
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Kim JH, Kim SW, Jung MS, Ahn KH, Kang EJ. Regioselectivities in Fe(III)-catalyzed Cycloisomerization Reactions of γ-Allenyl Alcohols. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10581] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jae Hyung Kim
- Department of Applied Chemistry; Kyung Hee University; Yongin 449-701 Korea
| | - Seung Wook Kim
- Department of Applied Chemistry; Kyung Hee University; Yongin 449-701 Korea
| | - Min Seok Jung
- Department of Applied Chemistry; Kyung Hee University; Yongin 449-701 Korea
| | - Kwang-Hyun Ahn
- Department of Applied Chemistry; Kyung Hee University; Yongin 449-701 Korea
| | - Eun Joo Kang
- Department of Applied Chemistry; Kyung Hee University; Yongin 449-701 Korea
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18
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Nagamoto M, Nishimura T. Iridium-catalyzed asymmetric cyclization of alkenoic acids leading to γ-lactones. Chem Commun (Camb) 2015. [PMID: 26216621 DOI: 10.1039/c5cc05393e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetric cyclization of alkenoic acids was realized by the use of an iridium/chiral bisphosphine catalyst, giving high yields of the corresponding γ-lactones with good enantioselectivity.
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Affiliation(s)
- Midori Nagamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
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19
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Li TT, Liu GQ, Wang YM, Cui B, Sun H, Li YM. The effect of hydrogen bond on Brønsted acid-catalyzed intramolecular hydroamination of unfunctionalized olefins. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Merten C, Pollok CH, Liao S, List B. Stereochemische Kommunikation innerhalb eines chiralen Ionenpaares. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501271] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Merten C, Pollok CH, Liao S, List B. Stereochemical Communication within a Chiral Ion Pair Catalyst. Angew Chem Int Ed Engl 2015; 54:8841-5. [DOI: 10.1002/anie.201501271] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/30/2015] [Indexed: 11/06/2022]
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22
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Shu XZ, Nguyen SC, He Y, Oba F, Zhang Q, Canlas C, Somorjai GA, Alivisatos AP, Toste FD. Silica-Supported Cationic Gold(I) Complexes as Heterogeneous Catalysts for Regio- and Enantioselective Lactonization Reactions. J Am Chem Soc 2015; 137:7083-6. [DOI: 10.1021/jacs.5b04294] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xing-Zhong Shu
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- State
Key Laboratory of Applied Organic Chemistry, and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Son C. Nguyen
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Ying He
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Fadekemi Oba
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Qiao Zhang
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Christian Canlas
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Gabor A. Somorjai
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - A. Paul Alivisatos
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - F. Dean Toste
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
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23
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Yamashita K, Hase S, Kayaki Y, Ikariya T. Highly Selective Carboxylative Cyclization of Allenylmethylamines with Carbon Dioxide Using N-Heterocyclic Carbene-Silver(I) Catalysts. Org Lett 2015; 17:2334-7. [DOI: 10.1021/acs.orglett.5b00809] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyohei Yamashita
- Department of Applied Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Shun Hase
- Department of Applied Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Yoshihito Kayaki
- Department of Applied Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Takao Ikariya
- Department of Applied Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
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24
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Chaudret R, de Courcy B, Contreras-García J, Gloaguen E, Zehnacker-Rentien A, Mons M, Piquemal JP. Unraveling non-covalent interactions within flexible biomolecules: from electron density topology to gas phase spectroscopy. Phys Chem Chem Phys 2015; 16:9876-91. [PMID: 24419903 DOI: 10.1039/c3cp52774c] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The NCI (Non-Covalent Interactions) method, a recently-developed theoretical strategy to visualize weak non-covalent interactions from the topological analysis of the electron density and of its reduced gradient, is applied in the present paper to document intra- and inter-molecular interactions in flexible molecules and systems of biological interest in combination with IR spectroscopy. We first describe the conditions of application of the NCI method to the specific case of intramolecular interactions. Then we apply it to a series of stable conformations of isolated molecules as an interpretative technique to decipher the different physical interactions at play in these systems. Examples are chosen among neutral molecular systems exhibiting a large diversity of interactions, for which an extensive spectroscopic characterization under gas-phase isolation conditions has been obtained using state-of-the-art conformer-specific experimental techniques. The interactions presently documented range from weak intra-molecular H-bonds in simple amino-alcohols, to more complex patterns, with interactions of various strengths in model peptides, as well as in chiral bimolecular systems, where invaluable hints for the understanding of chiral recognition are revealed. We also provide a detailed technical appendix, which discusses the choices of cut-offs as well as the applicability of the NCI analysis to specific constrained systems, where local effects require attention. Finally, the NCI technique provides IR spectroscopists with an elegant visualization of the interactions that potentially impact their vibrational probes, namely the OH and NH stretching motions. This contribution illustrates the power and the conditions of use of the NCI technique, with the aim of providing an easy tool for all chemists, experimentalists and theoreticians, for the visualization and characterization of the interactions shaping complex molecular systems.
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Affiliation(s)
- R Chaudret
- Sorbonne Universités, UPMC, Laboratoire de Chimie Théorique and CNRS, UMR 7616, 75252 Paris Cedex 05, Paris, France.
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25
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Roca-López D, Polo V, Tejero T, Merino P. Understanding Bond Formation in Polar One-Step Reactions. Topological Analyses of the Reaction between Nitrones and Lithium Ynolates. J Org Chem 2015; 80:4076-83. [DOI: 10.1021/acs.joc.5b00413] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- David Roca-López
- Laboratorio de Sı́ntesis Asimétrica,
Departamento de Sı́ntesis y Estructura de Biomoléculas,
Instituto de Sı́ntesis Quı́mica y Catálisis
Homogénea (ISQCH), Universidad de Zaragoza, CSIC, Campus San Francisco, E-50009 Zaragoza, Aragón, Spain
| | - Victor Polo
- Departamento de Quı́mica Fı́sica
and Insitituto de Biocomputación y Fı́sica de Sistemas
Complejos (BIFI), Universidad de Zaragoza, Campus San Francisco, E-50009 Zaragoza, Aragón, Spain
| | - Tomás Tejero
- Laboratorio de Sı́ntesis Asimétrica,
Departamento de Sı́ntesis y Estructura de Biomoléculas,
Instituto de Sı́ntesis Quı́mica y Catálisis
Homogénea (ISQCH), Universidad de Zaragoza, CSIC, Campus San Francisco, E-50009 Zaragoza, Aragón, Spain
| | - Pedro Merino
- Laboratorio de Sı́ntesis Asimétrica,
Departamento de Sı́ntesis y Estructura de Biomoléculas,
Instituto de Sı́ntesis Quı́mica y Catálisis
Homogénea (ISQCH), Universidad de Zaragoza, CSIC, Campus San Francisco, E-50009 Zaragoza, Aragón, Spain
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26
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Huang L, Arndt M, Gooßen K, Heydt H, Gooßen LJ. Late Transition Metal-Catalyzed Hydroamination and Hydroamidation. Chem Rev 2015; 115:2596-697. [DOI: 10.1021/cr300389u] [Citation(s) in RCA: 739] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Liangbin Huang
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Matthias Arndt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Käthe Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Heinrich Heydt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J. Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
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27
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Yang CH, Fan WW, Liu GQ, Duan L, Li L, Li YM. On the understanding of BF3·Et2O-promoted intra- and intermolecular amination and oxygenation of unfunctionalized olefins. RSC Adv 2015. [DOI: 10.1039/c5ra10513g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
BF3·Et2O was found to be effective for the amination and oxygenation of unfunctionalized olefins. In the presence of 3 equiv. of BF3·Et2O, intra- and intermolecular amination and oxygenation reactions could be realized in up to 99% isolated yields.
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Affiliation(s)
- Chun-Hua Yang
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Wen-Wen Fan
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Gong-Qing Liu
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Lili Duan
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Lin Li
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
| | - Yue-Ming Li
- State Key Laboratory of Medicinal Chemical Biology
- College of Pharmacy
- Tianjin Key Laboratory of Molecular Drug Research
- Nankai University
- Tianjin 300071
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28
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Wong VHL, White AJP, Hor TSA, Hii KK(M. Structure and bonding of [(SIPr)AgX] (X = Cl, Br, I and OTf). Chem Commun (Camb) 2015; 51:17752-5. [DOI: 10.1039/c5cc07977b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A series of iso-structural complexes [(SIPr)AgX] (X = Cl, Br, I, OTf; SIPr = 1,3-bis(2,6-diisopropylphenyl)imidazolidene) were synthesised, including the first example of a N-heterocyclic carbene silver(i) complex containing an O-bound triflate.
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Affiliation(s)
- Valerie H. L. Wong
- Department of Chemistry
- Imperial College London
- South Kensington
- UK
- Department of Chemistry
| | | | - T. S. Andy Hor
- Department of Chemistry
- National University of Singapore
- Singapore 117543
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29
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Handa S, Subramanium SS, Ruch AA, Tanski JM, Slaughter LM. Ligand- and Brønsted acid/base-switchable reaction pathways in gold(i)-catalyzed cycloisomerizations of allenoic acids. Org Biomol Chem 2015; 13:3936-49. [DOI: 10.1039/c4ob02640c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Competing gold-catalyzed cycloisomerizations of γ-allenoic acids are optimized through ligand and Brønsted acid/base effects, affording three distinct classes of lactones.
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Affiliation(s)
- Sachin Handa
- Department of Chemistry
- Oklahoma State University
- Stillwater
- USA
| | | | - Aaron A. Ruch
- Department of Chemistry
- Oklahoma State University
- Stillwater
- USA
- Department of Chemistry
| | | | - LeGrande M. Slaughter
- Department of Chemistry
- Oklahoma State University
- Stillwater
- USA
- Department of Chemistry
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30
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Handa S, Lippincott DJ, Slack ED, Aue DH, Lipshutz BH. Asymmetric gold-catalyzed lactonizations in water at room temperature. Angew Chem Int Ed Engl 2014; 53:10658-62. [PMID: 25124085 PMCID: PMC4193796 DOI: 10.1002/anie.201404729] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 07/12/2014] [Indexed: 11/10/2022]
Abstract
Asymmetric gold-catalyzed hydrocarboxylations are reported that show broad substrate scope. The hydrophobic effect associated with in situ-formed aqueous nanomicelles gives good to excellent ee's of product lactones. In-flask product isolation, along with the recycling of the catalyst and the reaction medium, are combined to arrive at an especially environmentally friendly process.
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Affiliation(s)
- Sachin Handa
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106 (USA)
| | - Daniel J. Lippincott
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106 (USA)
| | - Eric D. Slack
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106 (USA)
| | - Donald H. Aue
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106 (USA)
| | - Bruce H. Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106 (USA)
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31
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Handa S, Lippincott DJ, Aue DH, Lipshutz BH. Asymmetric Gold-Catalyzed Lactonizations in Water at Room Temperature. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404729] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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32
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Kemppainen EK, Sahoo G, Piisola A, Hamza A, Kótai B, Pápai I, Pihko PM. Mukaiyama-Michael Reactions withtrans-2,5-Diarylpyrrolidine Catalysts: Enantioselectivity Arises from Attractive Noncovalent Interactions, Not from Steric Hindrance. Chemistry 2014; 20:5983-93. [DOI: 10.1002/chem.201304240] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Indexed: 11/12/2022]
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33
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Wei T, Xie MS, Qu GR, Niu HY, Guo HM. A New Strategy To Construct Acyclic Nucleosides via Ag(I)-Catalyzed Addition of Pronucleophiles to 9-Allenyl-9H-purines. Org Lett 2014; 16:900-3. [DOI: 10.1021/ol4036566] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Tao Wei
- Collaborative
Innovation Center of Henan Province for Green Manufacturing of Fine
Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry
of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Ming-Sheng Xie
- Collaborative
Innovation Center of Henan Province for Green Manufacturing of Fine
Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry
of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Gui-Rong Qu
- Collaborative
Innovation Center of Henan Province for Green Manufacturing of Fine
Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry
of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Hong-Ying Niu
- School
of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Hai-Ming Guo
- Collaborative
Innovation Center of Henan Province for Green Manufacturing of Fine
Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry
of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
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34
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Soriano E, Fernández I. Allenes and computational chemistry: from bonding situations to reaction mechanisms. Chem Soc Rev 2014; 43:3041-105. [DOI: 10.1039/c3cs60457h] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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35
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Muñoz MP. Silver and platinum-catalysed addition of O–H and N–H bonds to allenes. Chem Soc Rev 2014; 43:3164-83. [DOI: 10.1039/c3cs60408j] [Citation(s) in RCA: 151] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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36
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Michon C, Medina F, Abadie MA, Agbossou-Niedercorn F. Asymmetric Intramolecular Hydroamination of Allenes using Mononuclear Gold Catalysts. Organometallics 2013. [DOI: 10.1021/om4009058] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Christophe Michon
- Université Lille Nord de France, 59000 Lille, France
- CNRS, UCCS UMR
8181, 59655 Villeneuve
d’Ascq, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
| | - Florian Medina
- Université Lille Nord de France, 59000 Lille, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
| | - Marc-Antoine Abadie
- Université Lille Nord de France, 59000 Lille, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
| | - Francine Agbossou-Niedercorn
- Université Lille Nord de France, 59000 Lille, France
- CNRS, UCCS UMR
8181, 59655 Villeneuve
d’Ascq, France
- ENSCL, CCCF, (Chimie-C7), CS 90108, 59652 Villeneuve d’Ascq Cedex, France
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37
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Danovich D, Shaik S, Rzepa HS, Hoffmann R. A Response to the Critical Comments on “One Molecule, Two Atoms, Three Views, Four Bonds?”. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302350] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Danovich D, Shaik S, Rzepa HS, Hoffmann R. A response to the critical comments on "One molecule, two atoms, three views, four bonds?". Angew Chem Int Ed Engl 2013; 52:5926-8. [PMID: 23630113 DOI: 10.1002/anie.201302350] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Indexed: 11/09/2022]
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39
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Barreiro EM, Adrio LA, Mimi Hii KK, Brazier JB. Coinage Metal Catalysts for the Addition of O-H to C=C Bonds. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201441] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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40
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Abstract
This article is an attempt to construct a chemical datument as a means of presenting insights into chemical phenomena in a scientific journal. An exploration of the interactions present in a small fragment of duplex Z-DNA and the nature of the catalytic centre of a carbon-dioxide/alkene epoxide alternating co-polymerisation is presented in this datument, with examples of the use of three software tools, one based on Java, the other two using Javascript and HTML5 technologies. The implications for the evolution of scientific journals are discussed.
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Affiliation(s)
- Henry S Rzepa
- Department of Chemistry, Imperial College London, South Kensington Campus, London, UK.
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41
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42
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Wong VHL, Hor TSA, Hii KK(M. Silver-catalysed intramolecular hydroamination of alkynes with trichloroacetimidates. Chem Commun (Camb) 2013; 49:9272-4. [DOI: 10.1039/c3cc45500a] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Barreiro EM, Broggini DFD, Adrio LA, White AJP, Schwenk R, Togni A, Hii KK(M. Gold(I) Complexes of Conformationally Constricted Chiral Ferrocenyl Phosphines. Organometallics 2012. [DOI: 10.1021/om300222k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elena M. Barreiro
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, U.K
| | - Diego F. D. Broggini
- Department
of Chemistry and
Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, CH-8093, Zürich, Switzerland
| | - Luis A. Adrio
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, U.K
| | - Rino Schwenk
- Department
of Chemistry and
Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, CH-8093, Zürich, Switzerland
| | - Antonio Togni
- Department
of Chemistry and
Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, CH-8093, Zürich, Switzerland
| | - King Kuok (Mimi) Hii
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, U.K
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