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Pujol AR, Bataillé S, Gourdon A. Functional Molecules for Grafting onto Ionic Surfaces. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Schubert M, Franzmann P, Wünsche von Leupoldt A, Koszinowski K, Heinze K, Waldvogel SR. Überoxidation als Schlüsselschritt im Mechanismus der MoCl5
- vermittelten dehydrierenden Arenkupplung. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Moritz Schubert
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Peter Franzmann
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Anica Wünsche von Leupoldt
- Institut für Anorganische und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Konrad Koszinowski
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Deutschland
| | - Katja Heinze
- Institut für Anorganische und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Siegfried R. Waldvogel
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
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Schubert M, Franzmann P, Wünsche von Leupoldt A, Koszinowski K, Heinze K, Waldvogel SR. Over-Oxidation as the Key Step in the Mechanism of the MoCl5-Mediated Dehydrogenative Coupling of Arenes. Angew Chem Int Ed Engl 2015; 55:1156-9. [PMID: 26473303 DOI: 10.1002/anie.201508035] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 01/12/2023]
Abstract
Molybdenum pentachloride is an unusually powerful reagent for the dehydrogenative coupling of arenes. Owing to the high reaction rate using MoCl5, several labile moieties are tolerated in this transformation. The mechanistic course of the reaction was controversially discussed although indications for a single electron transfer as the initial step were found recently. Herein, based on a combined study including synthetic investigations, electrochemical measurements, EPR spectroscopy, DFT calculations, and mass spectrometry, we deduct a highly consistent mechanistic scenario: MoCl5 acts as a one-electron oxidant in the absence of TiCl4 and as two-electron oxidant in the presence of TiCl4, but leads to an over-oxidized intermediate in both cases, which protects it from side reactions. In the course of aqueous work-up the reagent waste (Mo(III/IV) species) acts as reducing agent generating the desired organic C-C coupling product.
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Affiliation(s)
- Moritz Schubert
- Department of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Peter Franzmann
- Department of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Anica Wünsche von Leupoldt
- Department of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Konrad Koszinowski
- Institute of Organic and Biomolecular Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany.
| | - Katja Heinze
- Department of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
| | - Siegfried R Waldvogel
- Department of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
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Schubert M, Trosien S, Schulz L, Brandscheid C, Schollmeyer D, Waldvogel SR. Oxidative (Cross-)Coupling Reactions Mediated by C-H Activation of Thiophene Derivatives by Using Molybdenum(V) Reagents. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403188] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Wehming K, Schubert M, Schnakenburg G, Waldvogel SR. Oxidative Cyclization Reaction of 2-Aryl-Substituted Cinnamates To Form Phenanthrene Carboxylates by Using MoCl5. Chemistry 2014; 20:12463-9. [DOI: 10.1002/chem.201403442] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Indexed: 12/12/2022]
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Favero L, Marchetti F, Pampaloni G, Zacchini S. The interaction of molybdenum pentachloride with O- and S-heterocycles. Dalton Trans 2014; 43:495-504. [DOI: 10.1039/c3dt52271g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Trosien S, Böttger P, Waldvogel SR. Versatile Oxidative Approach to Carbazoles and Related Compounds Using MoCl5. Org Lett 2013; 16:402-5. [DOI: 10.1021/ol403304t] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Simon Trosien
- Institute of Organic Chemistry, Duesbergweg 10-14, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Philipp Böttger
- Institute of Organic Chemistry, Duesbergweg 10-14, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Siegfried R. Waldvogel
- Institute of Organic Chemistry, Duesbergweg 10-14, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
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Lohoelter C, Weckbecker M, Waldvogel SR. (-)-Isosteviol as a Versatile Ex-Chiral-Pool Building Block for Organic Chemistry. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300447] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dolci S, Marchetti F, Pampaloni G, Zacchini S. The Reactivity of Molybdenum Pentachloride with Ester Molecules: Ester Activation, Metal Reduction, and Synthesis of 1D Coordination Polymers. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201217] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Marchetti F, Pampaloni G, Zacchini S. The interaction of molybdenum pentachloride with carbonyl compounds. Dalton Trans 2013. [DOI: 10.1039/c2dt32456c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Markopoulos G, Henneicke L, Shen J, Okamoto Y, Jones PG, Hopf H. Tribenzotriquinacene: A Versatile Synthesis andC3-Chiral Platforms. Angew Chem Int Ed Engl 2012; 51:12884-7. [DOI: 10.1002/anie.201207220] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Indexed: 12/23/2022]
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Markopoulos G, Henneicke L, Shen J, Okamoto Y, Jones PG, Hopf H. Tribenzotriquinacen: eine vielseitige Synthese undC3-chirale Plattformen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207220] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Trosien S, Waldvogel SR. Synthesis of Highly Functionalized 9,10-Phenanthrenequinones by Oxidative Coupling Using MoCl5. Org Lett 2012; 14:2976-9. [DOI: 10.1021/ol300948u] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Simon Trosien
- Institute of Organic Chemistry, Duesbergweg 10-14, Johannes Gutenberg-University Mainz, 55128 Mainz, Germany
| | - Siegfried R. Waldvogel
- Institute of Organic Chemistry, Duesbergweg 10-14, Johannes Gutenberg-University Mainz, 55128 Mainz, Germany
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Remarkably fast and selective aromatization of Hantzsch esters with MoOCl4 and MoCl5: A chemical model for possible biologically relevant properties of molybdenum-containing enzymes. Bioorg Med Chem Lett 2012; 22:3676-81. [DOI: 10.1016/j.bmcl.2012.04.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 04/06/2012] [Accepted: 04/07/2012] [Indexed: 11/15/2022]
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Waldvogel SR, Trosien S. Oxidative transformation of aryls using molybdenum pentachloride. Chem Commun (Camb) 2012; 48:9109-19. [DOI: 10.1039/c2cc33925k] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Danz M, Tonner R, Hilt G. Understanding the regioselectivity in Scholl reactions for the synthesis of oligoarenes. Chem Commun (Camb) 2011; 48:377-9. [PMID: 22083090 DOI: 10.1039/c1cc15980a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A short reaction sequence leads to oligoarene derivatives utilising a regioselective Scholl reaction for the unprecedented cyclisation to the mono-functionalised oligoarene under methanol elimination. Quantum-chemical investigations reveal the reason for the remarkably high regioselectivity.
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Affiliation(s)
- Michael Danz
- Fachbereich Chemie, Hans-Meerwein-Str., 35043 Marburg, Germany
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Hackelöer K, Schnakenburg G, Waldvogel SR. Oxidative Coupling Reactions of 1,3-Diarylpropene Derivatives to Dibenzo[a,c]cycloheptenes by PIFA. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100918] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Boshta NM, Bomkamp M, Schnakenburg G, Waldvogel SR. Synthesis of all-syn Functionalized Triphenylene Ketals. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001699] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hackeloer K, Schnakenburg G, Waldvogel SR. Novel Domino Oxidative Coupling: C−C Bond Formation Sequence to Highly Functionalized Dibenzo[a,c]cycloheptenes. Org Lett 2011; 13:916-9. [DOI: 10.1021/ol102969k] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kristina Hackeloer
- Kekulé Institute for Organic Chemistry and Biochemistry, Bonn University, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany, X-ray Analysis Department, Institute for Inorganic Chemistry, Bonn University, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany, and Institute for Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Gregor Schnakenburg
- Kekulé Institute for Organic Chemistry and Biochemistry, Bonn University, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany, X-ray Analysis Department, Institute for Inorganic Chemistry, Bonn University, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany, and Institute for Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Siegfried R. Waldvogel
- Kekulé Institute for Organic Chemistry and Biochemistry, Bonn University, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany, X-ray Analysis Department, Institute for Inorganic Chemistry, Bonn University, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany, and Institute for Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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