51
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Roland S, Suarez JM, Sollogoub M. Confinement of Metal-N-Heterocyclic Carbene Complexes to Control Reactivity in Catalytic Reactions. Chemistry 2018; 24:12464-12473. [DOI: 10.1002/chem.201801278] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Sylvain Roland
- Sorbonne Université; CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Jorge Meijide Suarez
- Sorbonne Université; CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Matthieu Sollogoub
- Sorbonne Université; CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
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52
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Köster JM, Tiefenbacher K. Elucidating the Importance of Hydrochloric Acid as a Cocatalyst for Resorcinarene-Capsule-Catalyzed Reactions. ChemCatChem 2018. [DOI: 10.1002/cctc.201800326] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jesper M. Köster
- Department of Chemistry, BPR1096; University of Basel; Mattenstrasse 24a 4058 Basel Switzerland
| | - Konrad Tiefenbacher
- Department of Chemistry, BPR1096; University of Basel; Mattenstrasse 24a 4058 Basel Switzerland
- Department of Biosystems Science and Engineering; ETH Zürich; Mattenstrasse 24 4058 Basel Switzerland
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53
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González-Belman OF, Jiménez-Halla JOC, Nahra F, Cazin CSJ, Poater A. The role of the metal in the dual-metal catalysed hydrophenoxylation of diphenylacetylene. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00510a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Computational studies on homo- and heterobimetallic group 11 metal-NHC complexes were carried out, providing insights into the catalysed-hydrophenoxylation of alkynes.
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Affiliation(s)
- Oscar F. González-Belman
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | | | - Fady Nahra
- Department of Chemistry
- Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Catherine S. J. Cazin
- Department of Chemistry
- Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Albert Poater
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
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54
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Arif T, Cazorla C, Bogliotti N, Saleh N, Blanchard F, Gandon V, Métivier R, Xie J, Voituriez A, Marinetti A. Bimetallic gold(i) complexes of photoswitchable phosphines: synthesis and uses in cooperative catalysis. Catal Sci Technol 2018. [DOI: 10.1039/c7cy01614j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first photoswitchable bimetallic gold catalysts based on an azobenzene backbone have been synthesized and their catalytic properties have been investigated.
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55
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Bräuer TM, Zhang Q, Tiefenbacher K. Iminium Catalysis inside a Self-Assembled Supramolecular Capsule: Scope and Mechanistic Studies. J Am Chem Soc 2017; 139:17500-17507. [PMID: 29090917 DOI: 10.1021/jacs.7b08976] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although iminium catalysis has become an important tool in organic chemistry, its combination with supramolecular host systems has remained largely unexplored. We report the detailed investigations into the first example of iminium catalysis inside a supramolecular host. In the case of 1,4-reductions of α,β-unsaturated aldehydes, catalytic amounts of host are able to increase the enantiomeric excess of the products formed. Several control experiments were performed and provided strong evidence that the modulation of enantiomeric excess of the reaction product indeed stems from a reaction on the inside of the capsule. The origin of the increased enantioselectivity in the capsule was investigated. Furthermore, the substrate and nucleophile scope were studied. Kinetic investigations as well as the kinetic isotope effect measured confirmed that the hydride delivery to the substrate is the rate-determining step inside the capsule. The exploration of benzothiazolidines as alternative hydride sources revealed an unexpected substitution effect of the hydride source itself. The results presented confirm that the noncovalent combination of supramolecular hosts with iminium catalysis is opening up new exciting possibilities to increase enantioselectivity in challenging reactions.
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Affiliation(s)
- Thomas M Bräuer
- Department of Chemistry, University of Basel , BPR 1096, Postfach 3350, Mattenstrasse 24a, CH-4002 Basel, Switzerland
| | - Qi Zhang
- Department of Chemistry, University of Basel , BPR 1096, Postfach 3350, Mattenstrasse 24a, CH-4002 Basel, Switzerland
| | - Konrad Tiefenbacher
- Department of Chemistry, University of Basel , BPR 1096, Postfach 3350, Mattenstrasse 24a, CH-4002 Basel, Switzerland.,Department of Biosystems Science and Engineering, ETH Zürich , Mattenstrasse 26, CH-4058 Basel, Switzerland
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56
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57
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Mote NR, Patel K, Shinde DR, Gaikwad SR, Koshti VS, Gonnade RG, Chikkali SH. H-Bonding Assisted Self-Assembly of Anionic and Neutral Ligand on Metal: A Comprehensive Strategy To Mimic Ditopic Ligands in Olefin Polymerization. Inorg Chem 2017; 56:12448-12456. [DOI: 10.1021/acs.inorgchem.7b01923] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nilesh R. Mote
- Polyolefin Lab,
Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Ketan Patel
- Polyolefin Lab,
Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Dinesh R. Shinde
- Central
NMR facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Shahaji R. Gaikwad
- Polyolefin Lab,
Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Vijay S. Koshti
- Polyolefin Lab,
Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Rajesh G. Gonnade
- Center for Materials Characterization, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Samir H. Chikkali
- Polyolefin Lab,
Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
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58
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De Bo G, Leigh DA, McTernan CT, Wang S. A complementary pair of enantioselective switchable organocatalysts. Chem Sci 2017; 8:7077-7081. [PMID: 29147536 PMCID: PMC5637462 DOI: 10.1039/c7sc02462b] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 08/22/2017] [Indexed: 12/11/2022] Open
Abstract
A pair of enantioselective switchable bifunctional catalysts are shown to promote a range of conjugate addition reactions in up to 95 : 5 e.r. and 95% conversion. Each catalyst can be switched OFF using conditions that switch the other catalyst ON. Catalyst ON : OFF ratios of up to 98 : 2 and 1 : 99 were achieved, with a ratio of reaction rates of up to 16 : 1 between the ON and OFF states, maintained over complete ON-OFF-ON and OFF-ON-OFF cycles. However, simultaneous operation of the catalyst pair in the same reaction vessel, which in principle could allow product handedness to be switched by simple E-Z isomerisation of the catalyst pair, was unsuccessful. In this first generation complementary pair of enantioselective switchable organocatalysts, the OFF state of one catalyst inhibits the ON state of the other.
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Affiliation(s)
- Guillaume De Bo
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - David A Leigh
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Charlie T McTernan
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Shoufeng Wang
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
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59
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Zhang P, Meijide Suárez J, Driant T, Derat E, Zhang Y, Ménand M, Roland S, Sollogoub M. Cyclodextrin Cavity-Induced Mechanistic Switch in Copper-Catalyzed Hydroboration. Angew Chem Int Ed Engl 2017; 56:10821-10825. [DOI: 10.1002/anie.201705303] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Pinglu Zhang
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Jorge Meijide Suárez
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Thomas Driant
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Etienne Derat
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Yongmin Zhang
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Mickaël Ménand
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Sylvain Roland
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Matthieu Sollogoub
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
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60
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Zhang P, Meijide Suárez J, Driant T, Derat E, Zhang Y, Ménand M, Roland S, Sollogoub M. Cyclodextrin Cavity-Induced Mechanistic Switch in Copper-Catalyzed Hydroboration. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705303] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pinglu Zhang
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Jorge Meijide Suárez
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Thomas Driant
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Etienne Derat
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Yongmin Zhang
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Mickaël Ménand
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Sylvain Roland
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
| | - Matthieu Sollogoub
- Sorbonne Université; UPMC Univ Paris 06, CNRS; Institut Parisien de Chimie Moléculaire (IPCM), UMR 8232; 4, place Jussieu 75005 Paris France
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61
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Zhang Q, Catti L, Pleiss J, Tiefenbacher K. Terpene Cyclizations inside a Supramolecular Catalyst: Leaving-Group-Controlled Product Selectivity and Mechanistic Studies. J Am Chem Soc 2017; 139:11482-11492. [DOI: 10.1021/jacs.7b04480] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qi Zhang
- Department
of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Lorenzo Catti
- Department
of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Jürgen Pleiss
- Institute
of Technical Biochemistry, University of Stuttgart, Allmandring
31, D-70569 Stuttgart, Germany
| | - Konrad Tiefenbacher
- Department
of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
- Department
of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse
26, CH-4058 Basel, Switzerland
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62
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Semwal S, Choudhury J. Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702142] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shrivats Semwal
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
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63
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Semwal S, Choudhury J. Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions. Angew Chem Int Ed Engl 2017; 56:5556-5560. [DOI: 10.1002/anie.201702142] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/22/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Shrivats Semwal
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal 462066 India
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64
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Casals-Cruañas È, González-Belman OF, Besalú-Sala P, Nelson DJ, Poater A. The preference for dual-gold(i) catalysis in the hydro(alkoxylation vs. phenoxylation) of alkynes. Org Biomol Chem 2017; 15:6416-6425. [DOI: 10.1039/c7ob01457k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dinuclear gold complexes and their use in catalysis have received significant recent attention, but there are few critical comparisons of mono- versus dual gold-catalysed pathways.
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Affiliation(s)
- Èric Casals-Cruañas
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | - Oscar F. González-Belman
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | - Pau Besalú-Sala
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | - David J. Nelson
- WestCHEM Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | - Albert Poater
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
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