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Kinens A, Balkaitis S, Ahmad OK, Piotrowski DW, Suna E. Acylative Dynamic Kinetic Resolution of Secondary Alcohols: Tandem Catalysis by HyperBTM and Bäckvall's Ruthenium Complex. J Org Chem 2021; 86:7189-7202. [PMID: 33974415 DOI: 10.1021/acs.joc.1c00545] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Non-enzymatic dynamic kinetic resolution (DKR) of secondary alcohols by enantioselective acylation using an isothiourea-derived HyperBTM catalyst and racemization of slowly reacting alcohol by Bäckvall's ruthenium complex is reported. The DKR approach features high enantioselectivities (up to 99:1), employs easy-to-handle crystalline 4-nitrophenyl isobutyrate as the acylating reagent, and proceeds at room temperature and under an ambient atmosphere. The stereoinduction model featuring cation-π system interactions between the acylated HyperBTM catalyst and π electrons of an alcohol aryl subunit has been elaborated by DFT calculations.
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Affiliation(s)
- Artis Kinens
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia.,Department of Chemistry, University of Latvia, Jelgavas 1, Riga LV-1004, Latvia
| | - Simonas Balkaitis
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia.,Department of Chemistry, University of Latvia, Jelgavas 1, Riga LV-1004, Latvia
| | - Omar K Ahmad
- Worldwide Medicinal Chemistry, Pfizer, Inc., Eastern Point Road, Groton, Connecticut 06340, United States
| | - David W Piotrowski
- Worldwide Medicinal Chemistry, Pfizer, Inc., Eastern Point Road, Groton, Connecticut 06340, United States
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia.,Department of Chemistry, University of Latvia, Jelgavas 1, Riga LV-1004, Latvia
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Kaatze U. Dielectric and structural relaxation in water and some monohydric alcohols. J Chem Phys 2017; 147:024502. [DOI: 10.1063/1.4991850] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fleshman AM, Forsythe GE, Petrowsky M, Frech R. Describing Temperature-Dependent Self-Diffusion Coefficients and Fluidity of 1- and 3-Alcohols with the Compensated Arrhenius Formalism. J Phys Chem B 2016; 120:9959-68. [PMID: 27580069 DOI: 10.1021/acs.jpcb.6b03573] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The location of the hydroxyl group in monohydroxy alcohols greatly affects the temperature dependence of the liquid structure due to hydrogen bonding. Temperature-dependent self-diffusion coefficients, fluidity (the inverse of viscosity), dielectric constant, and density have been measured for several 1-alcohols and 3-alcohols with varying alkyl chain lengths. The data are modeled using the compensated Arrhenius formalism (CAF). The CAF follows a modified transition state theory using an Arrhenius-like expression to describe the transport property, which consists of a Boltzmann factor containing an energy of activation, Ea, and an exponential prefactor containing the temperature-dependent solution dielectric constant, εs(T). Both 1- and 3-alcohols show the Ea of diffusion coefficients (approximately 43 kJ mol(-1)) is higher than the Ea of fluidity (approximately 35 kJ mol(-1)). The temperature dependence of the exponential prefactor in these associated liquids is explained using the dielectric constant and the Kirkwood-Frölich correlation factor, gk. It is argued that the dielectric constant must be used to account for the additional temperature dependence due to variations in the liquid structure (e.g., hydrogen bonding) for the CAF to accurately model the transport property.
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Affiliation(s)
- Allison M Fleshman
- Department of Chemistry, Lawrence University , Appleton, Wisconsin 54911, United States
| | - Grant E Forsythe
- Department of Chemistry, Lawrence University , Appleton, Wisconsin 54911, United States
| | - Matt Petrowsky
- Maxwell Technologies, San Diego, California 92123, United States
| | - Roger Frech
- Department of Chemistry and Biochemistry, University of Oklahoma , Norman, Oklahoma 73071, United States
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Dzida M, Kaatze U. Compressibility and Dielectric Relaxation of Mixtures of Water with Monohydroxy Alcohols. J Phys Chem B 2015; 119:12480-9. [DOI: 10.1021/acs.jpcb.5b07093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marzena Dzida
- Institute
of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Udo Kaatze
- Drittes
Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz
1, 37077 Göttingen, Germany
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Singh LP, Alba-Simionesco C, Richert R. Dynamics of glass-forming liquids. XVII. Dielectric relaxation and intermolecular association in a series of isomeric octyl alcohols. J Chem Phys 2014; 139:144503. [PMID: 24116631 DOI: 10.1063/1.4823998] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
It is well established that many mono-hydroxy alcohols show an extra relaxation process of the Debye type in addition to the signatures of primary and secondary structural relaxations, which is observed only in dielectric spectroscopy and related techniques. In order to gain further insight into the nature of this Debye peak, we study the linear and nonlinear dielectric behavior of a series of isomeric octyl alcohols and of mixtures of n-propanol with one of the octanols. These samples display systematic variations of the Debye peak intensity and concomitant changes in the Kirkwood correlation factor gK from 0.1 to 4, indicative of different equilibrium constants, K(c∕r), that characterize the populations of non-polar ring and polar open chain structures. For cases where K(c∕r) is not too far from unity, we find that a high electric field shifts K(c∕r) towards more chains, and that the accompanying change in the end-to-end vector of hydrogen-bond connected structures occurs on the Debye time scale. The results suggest that gK is correlated with the spectral separation of the Debye and primary structural peaks, as both features depend on steric hindrance of chain flexibility or bond rotation barriers and on average chain lengths. Based on the complex dynamics of supercooled mono-hydroxy alcohols with three relaxation peaks that cover many orders of magnitude in frequency, it is argued that a frequency dependent gK may be required for assessing the average orientational correlations within hydrogen-bonded structures correctly.
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Affiliation(s)
- Lokendra P Singh
- Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA
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Kaatze U. Bound water: Evidence from and implications for the dielectric properties of aqueous solutions. J Mol Liq 2011. [DOI: 10.1016/j.molliq.2011.06.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Altman E, Stefanidis GD, van Gerven T, Stankiewicz A. Microwave-Promoted Synthesis of n-Propyl Propionate using Homogeneous Zinc Triflate Catalyst. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200687m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- E. Altman
- Process and Energy Department, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands
| | - G. D. Stefanidis
- Process and Energy Department, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands
| | - T. van Gerven
- Department of Chemical Engineering, Katholieke Universiteit Leuven, De Croylaan 46, 3001 Leuven, Belgium
| | - A. Stankiewicz
- Process and Energy Department, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands
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Hydrogen bond fluctuations and dispersive interactions of alcohol/alkane mixtures. An ultrasonic relaxation study. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Daschakraborty S, Ranjit B. Stokes Shift Dynamics in (Ionic Liquid + Polar Solvent) Binary Mixtures: Composition Dependence. J Phys Chem B 2011; 115:4011-24. [DOI: 10.1021/jp200407m] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Snehasis Daschakraborty
- Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700098, India
| | - Biswas Ranjit
- Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700098, India
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