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Weinbender T, Knierbein M, Bittorf L, Held C, Siewert R, Verevkin SP, Sadowski G, Reiser O. High-Pressure-Mediated Thiourea-Organocatalyzed Asymmetric Michael Addition to (Hetero)aromatic Nitroolefins: Prediction of Reaction Parameters by PCP-SAFT Modelling. Chempluschem 2020; 85:1292-1296. [PMID: 32543128 DOI: 10.1002/cplu.202000364] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 05/26/2020] [Indexed: 11/08/2022]
Abstract
Thiourea-organocatalyzed Michael additions of diethyl malonate to various heteroaromatic nitroolefins (13 examples) have been studied under high-pressure (up to 800 MPa) and ambient pressure conditions. High pressure was conducive to enhanced product yields by a factor of 2-12 at a given reaction time, high reaction rates (reaction times were decreased from 72-24 h down to 4-24 h) and high enantioselectivity. Elucidating the effects of solvents for maximizing reaction rates and yields has been carried out using the Perturbed-Chain Polar Statistical Associating Fluid Theory (PCP-SAFT), allowing for the first time a prediction of the kinetic profiles under high-hydrostatic-pressure conditions.
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Affiliation(s)
- Thomas Weinbender
- Institute of Organic Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Michael Knierbein
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, 44227, Dortmund, Germany
| | - Lukas Bittorf
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, 44227, Dortmund, Germany
| | - Christoph Held
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, 44227, Dortmund, Germany
| | - Riko Siewert
- Department of Physical Chemistry, University of Rostock, Dr-Lorenz-Weg 1, 18059, Rostock, Germany
| | - Sergey P Verevkin
- Department of Physical Chemistry, University of Rostock, Dr-Lorenz-Weg 1, 18059, Rostock, Germany
| | - Gabriele Sadowski
- Laboratory of Thermodynamics, TU Dortmund University, Emil-Figge-Str. 70, 44227, Dortmund, Germany
| | - Oliver Reiser
- Institute of Organic Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
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Enantioselective Synthesis of Quaternary Carbon Stereogenic Centers through the Primary Amine-Catalyzed Michael Addition Reaction of α-Substituted Cyclic Ketones at High Pressure. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500411] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Miyamae N, Watanabe N, Moritaka M, Nakano K, Ichikawa Y, Kotsuki H. Asymmetric organocatalytic desymmetrization of 4,4-disubstituted cyclohexadienones at high pressure: a new powerful strategy for the synthesis of highly congested chiral cyclohexenones. Org Biomol Chem 2014; 12:5847-55. [DOI: 10.1039/c4ob00733f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A highly diastereoselective and enantioselective method for the asymmetric desymmetrization of 4,4-disubstituted cyclohexadienones at high pressure was developed.
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Affiliation(s)
- Naomu Miyamae
- Laboratory of Natural Products Chemistry
- Faculty of Science
- Kochi University
- Kochi 780-8520, Japan
| | - Naruhisa Watanabe
- Laboratory of Natural Products Chemistry
- Faculty of Science
- Kochi University
- Kochi 780-8520, Japan
| | - Maya Moritaka
- Laboratory of Natural Products Chemistry
- Faculty of Science
- Kochi University
- Kochi 780-8520, Japan
| | - Keiji Nakano
- Laboratory of Natural Products Chemistry
- Faculty of Science
- Kochi University
- Kochi 780-8520, Japan
| | - Yoshiyasu Ichikawa
- Laboratory of Natural Products Chemistry
- Faculty of Science
- Kochi University
- Kochi 780-8520, Japan
| | - Hiyoshizo Kotsuki
- Laboratory of Natural Products Chemistry
- Faculty of Science
- Kochi University
- Kochi 780-8520, Japan
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