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Freund RRA, van den Borg M, Gaissmaier D, Schlosser R, Jacob T, Arndt HD. Cornforth-Evans Transition States in Stereocontrolled Allylborations of Epoxy Aldehydes. Chemistry 2020; 26:8639-8650. [PMID: 32239742 PMCID: PMC7384170 DOI: 10.1002/chem.202001479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/01/2020] [Indexed: 11/24/2022]
Abstract
Allylboration reactions rank among the most reliable tools in organic synthesis. Herein, we report a general synthesis of trifunctionalized allylboronates and systematic investigations of their stereocontrolled transformations with substituted aldehyde substrates, in order to efficiently access diverse, highly substituted target substrates. A peculiar transition in stereocontrol was observed from the polar Felkin–Anh (PFA) to the Cornforth–Evans (CE) model for alkoxy‐ and epoxy‐substituted aldehydes. CE‐type transition states were uniformly identified as minima in advanced, DFT‐based computational studies of allylboration reactions of epoxy aldehydes, conforming well to the experimental data, and highlighting the underestimated relevance of this model. Furthermore, a mechanism‐based rationale for the substitution pattern of the epoxide was delineated that ensures high levels of stereocontrol and renders α,β‐epoxy aldehydes generally applicable substrates for target synthesis.
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Affiliation(s)
- Robert R A Freund
- Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller-Universität Jena, Humboldtstr. 10, 07743, Jena, Germany
| | - Matthias van den Borg
- Institut für Elektrochemie, Universität Ulm, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Daniel Gaissmaier
- Institut für Elektrochemie, Universität Ulm, Albert-Einstein-Allee 47, 89081, Ulm, Germany.,Electrochemical Energy Storage, Helmholtz-Institute Ulm (HIU), Helmholtzstr. 11, 89081, Ulm, Germany.,Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Robin Schlosser
- Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller-Universität Jena, Humboldtstr. 10, 07743, Jena, Germany
| | - Timo Jacob
- Institut für Elektrochemie, Universität Ulm, Albert-Einstein-Allee 47, 89081, Ulm, Germany.,Electrochemical Energy Storage, Helmholtz-Institute Ulm (HIU), Helmholtzstr. 11, 89081, Ulm, Germany.,Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Hans-Dieter Arndt
- Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller-Universität Jena, Humboldtstr. 10, 07743, Jena, Germany
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Fustero S, Simón-Fuentes A, Barrio P, Haufe G. Olefin Metathesis Reactions with Fluorinated Substrates, Catalysts, and Solvents. Chem Rev 2014; 115:871-930. [DOI: 10.1021/cr500182a] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Santos Fustero
- Departamento
de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
- Laboratorio
de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | | | - Pablo Barrio
- Departamento
de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
| | - Günter Haufe
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, D-48149 Münster, Germany
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Wilson PG, Percy JM, Redmond JM, McCarter AW. Suzuki–Miyaura Coupling Reactions of Iodo(difluoroenol) Derivatives, Fluorinated Building Blocks Accessible at Near-Ambient Temperatures. J Org Chem 2012; 77:6384-93. [DOI: 10.1021/jo3011705] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Peter G. Wilson
- WestCHEM Department
of Pure
and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow
G1 1XL, U.K
| | - Jonathan M. Percy
- WestCHEM Department
of Pure
and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow
G1 1XL, U.K
| | - Joanna M. Redmond
- Respiratory
TA, GlaxoSmithKline Medicines Research Centre, Gunnels
Wood Road, Stevenage SG1 2NY, U.K
| | - Adam W. McCarter
- WestCHEM Department
of Pure
and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow
G1 1XL, U.K
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Hillier IH, Pandian S, Percy JM, Vincent MA. Mapping the potential energy surfaces for ring-closing metathesis reactions of prototypical dienes by electronic structure calculations. Dalton Trans 2011; 40:1061-72. [DOI: 10.1039/c0dt01314e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2009. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2010.07.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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