151
|
Bechtold M, Makart S, Reiss R, Alder P, Panke S. Model-based characterization of an amino acid racemase fromPseudomonas putida DSM 3263 for application in medium-constrained continuous processes. Biotechnol Bioeng 2007; 98:812-24. [PMID: 17486655 DOI: 10.1002/bit.21481] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The amino acid racemase with broad substrate specificity from Pseudomonas putida DSM 3263 was overproduced and characterized with respect to application in an integrated multi-step process (e.g., dynamic kinetic resolution) that--theoretically--would allow for 100% chemical yield and 100% enantiomeric excess. Overexpression of the racemase gene in Escherichia coli delivered cell free extract with easily sufficient activity (20-50 U mg(-1) total protein) for application in an enzyme membrane reactor (EMR) setting. Model-based experimental analysis of a set of enzyme assays clearly indicated that racemization of the model substrates D- or L-methionine could be accurately described by reversible Michaelis-Menten kinetics. The corresponding kinetic parameters were determined from progress curves for the entire suitable set of aqueous-organic mixtures (up to 60% methanol and 40% acetonitrile) that are eligible for an integrated process scheme. The resulting kinetic expression could be successfully applied to describe enzyme membrane reactor performance under a large variety of settings. Model-based calculations suggested that a methanol content of 10% and an acetonitrile content of 20% provide maximum productivity in EMR operations. However product concentrations were decreased in comparison to purely aqueous operation due to decreasing solubility of methionine with increasing organic solvent content. Finally, biocatalyst stability was investigated in different solvent compositions following a model-based approach. Buffer without organic content provided excellent stability at moderate temperatures (20-35 degrees C) while addition of 20% acetonitrile or methanol drastically reduced the half-life of the racemase.
Collapse
Affiliation(s)
- M Bechtold
- Bioprocess Laboratory, Institute of Process Engineering, ETH Zurich, Universitaetsstrasse 6, 8092 Zurich, Switzerland
| | | | | | | | | |
Collapse
|
152
|
Ikunaka M, Kato S, Sugimori D, Yamada Y. N,N-Diethyl-(R)-[3-(2-aminopropyl)-1H-indol-7-yloxy]acetamide: Its Process Chemistry Ranging from Enantiocontrolled Construction of the Chiral Amine Side Chain to Regioselective Functionalization of the Aromatic Starting Materials. Org Process Res Dev 2006. [DOI: 10.1021/op060210h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masaya Ikunaka
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan, Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, Fukushima, Fukushima 960-1296, Japan, Medicinal Chemistry Group I, Chemistry Research Laboratories, Dainippon Sumitomo Pharma Co., Ltd., Enoki 33-94, Suita, Osaka 564-0053, Japan, Department of Applied Biological Science, Faculty of Life Science, Fukuyama University, 1 Sanzo, Gakuen-cho, Fukuyama, Hiroshima 729-0292, Japan
| | - Shiro Kato
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan, Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, Fukushima, Fukushima 960-1296, Japan, Medicinal Chemistry Group I, Chemistry Research Laboratories, Dainippon Sumitomo Pharma Co., Ltd., Enoki 33-94, Suita, Osaka 564-0053, Japan, Department of Applied Biological Science, Faculty of Life Science, Fukuyama University, 1 Sanzo, Gakuen-cho, Fukuyama, Hiroshima 729-0292, Japan
| | - Daisuke Sugimori
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan, Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, Fukushima, Fukushima 960-1296, Japan, Medicinal Chemistry Group I, Chemistry Research Laboratories, Dainippon Sumitomo Pharma Co., Ltd., Enoki 33-94, Suita, Osaka 564-0053, Japan, Department of Applied Biological Science, Faculty of Life Science, Fukuyama University, 1 Sanzo, Gakuen-cho, Fukuyama, Hiroshima 729-0292, Japan
| | - Yasuhiro Yamada
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan, Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, Fukushima, Fukushima 960-1296, Japan, Medicinal Chemistry Group I, Chemistry Research Laboratories, Dainippon Sumitomo Pharma Co., Ltd., Enoki 33-94, Suita, Osaka 564-0053, Japan, Department of Applied Biological Science, Faculty of Life Science, Fukuyama University, 1 Sanzo, Gakuen-cho, Fukuyama, Hiroshima 729-0292, Japan
| |
Collapse
|
153
|
Lectka T, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2006. [DOI: 10.1016/s0040-4020(06)01801-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
154
|
Amat M, Bassas O, Llor N, Cantó M, Pérez M, Molins E, Bosch J. Dynamic Kinetic Resolution and Desymmetrization Processes: A Straightforward Methodology for the Enantioselective Synthesis of Piperidines. Chemistry 2006; 12:7872-81. [PMID: 16850515 DOI: 10.1002/chem.200600420] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A straightforward procedure for the synthesis of enantiopure polysubstituted piperidines is reported. It involves the direct generation of chiral non-racemic oxazolo[3,2-a]piperidone lactams that already incorporate carbon substituents on the heterocyclic ring and the subsequent removal of the chiral auxiliary. The key step is a cyclocondensation reaction of (R)-phenylglycinol or other amino alcohols with racemic or prochiral delta-oxo (di)acid derivatives in highly stereoselective processes involving dynamic kinetic resolution and/or desymmetrization of diastereotopic or enantiotopic ester groups.
Collapse
Affiliation(s)
- Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy University of Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain.
| | | | | | | | | | | | | |
Collapse
|
155
|
Nestl BM, Glueck SM, Hall M, Kroutil W, Stuermer R, Hauer B, Faber K. Biocatalytic Racemization of (Hetero)Aryl-aliphatic α-Hydroxycarboxylic Acids byLactobacillus spp. Proceeds via an Oxidation–Reduction Sequence. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600454] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
156
|
Carvalho PO, Cass QB, Calafatti SA, Contesini FJ, Bizaco R. Review- Alternatives for the separation of drug enantiomers: ibuprofen as a model compound. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2006. [DOI: 10.1590/s0104-66322006000300003] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Q. B. Cass
- Universidade Federal de São Carlos, Brazil
| | | | | | | |
Collapse
|
157
|
Danel C, Foulon C, Goossens JF, Bonte JP, Vaccher C. Kinetics of racemization of enantiopure N-imidazole derivatives, aromatase inhibitors: studies in organic, aqueous, and biomimetic media. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.08.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
158
|
Escoubet S, Gastaldi S, Vanthuyne N, Gil G, Siri D, Bertrand MP. Thiyl Radical Mediated Racemization of Nonactivated Aliphatic Amines. J Org Chem 2006; 71:7288-92. [PMID: 16958522 DOI: 10.1021/jo061033l] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The racemization of nonactivated aliphatic amines has been mediated with alkanethiols and with methyl thioglycolate in the presence of AIBN. The process involves reversible H-abstraction at the chiral center, in a position alpha relative to nitrogen, by thiyl radical. The knowledge of the reaction enthalpy is critical to select the appropriate thiol. In the absence of experimental values, theoretical calculations of the alpha-C-H BDEs and the S-H BDE provide a useful guide.
Collapse
Affiliation(s)
- Stéphanie Escoubet
- Laboratoire de Chimie Moléculaire Organique, UMR 6517 "Chimie, Biologie, et Radicaux Libres", Boite 562, Université Paul Cézanne, Aix-Marseille III, Faculté des Sciences St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | | | | | | | | | | |
Collapse
|
159
|
Shi XX, Ni F, Shang HX, Yan ML, Su JQ. Racemization of (S)-(+)-10,11-dimethoxyaporphine and (S)-(+)-aporphine: efficient preparations of (R)-(−)-apomorphine and (R)-(−)-aporphine via a recycle process of resolution. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.08.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
160
|
Zheng L, Zhang S, Wang F, Gao G, Cao S. Chemoenzymatic synthesis of the chiral herbicide: ( S)-metolachlor. CAN J CHEM 2006. [DOI: 10.1139/v06-129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A chemoenzymatic approach for the production of (S)-metolachlor, one of the most widely used herbicides, has been developed. The starting material (S)-N-(2-ethyl-6-methylphenyl)alanine was obtained by the use of lipase-catalyzed hydrolytic kinetic resolution. Under the optimal conditions, the good activity and excellent enantioselectivity of lipase B from Candida antarctica (CAL-B,E > 100) are achieved in diethyl ether – water (15% v/v), which is about 9.7-fold more enantioselective than that in a pure buffered aqueous solution (E = 12.1). After a simple extraction procedure is used to separate the acid product from the remaining ester, the remaining ester is racemized, providing the basis for the continuous resolution process. Then (S)-metolachlor is synthesized by a simple chemical method using the enantiomerically pure (S)-acid.Key words: (S)-metolachlor, herbicide, CAL-B, (S)-N-(2-ethyl-6-methylphenyl)alanine, resolution.
Collapse
|
161
|
Escoubet S, Gastaldi S, Vanthuyne N, Gil G, Siri D, Bertrand MP. Thiyl Radical Mediated Racemization of Benzylic Amines. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600120] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
162
|
Lectka T, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2006. [DOI: 10.1016/s0040-4020(06)00771-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
163
|
Park OJ, Lee SH, Park TY, Chung WG, Lee SW. Development of a Scalable Process for a Key Intermediate of (R)-Metalaxyl by Enzymatic Kinetic Resolution†. Org Process Res Dev 2006. [DOI: 10.1021/op050166q] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
164
|
Nestl B, Kroutil W, Faber K. Biocatalytic Racemization of α-Hydroxy Ketones (Acyloins) at Physiological Conditions usingLactobacillus paracasei DSM 20207. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200606055] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
165
|
Biocatalytic approaches for the quantitative production of single stereoisomers from racemates. Biochem Soc Trans 2006. [DOI: 10.1042/bst0340296] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Strategies for the chemoenzymatic transformation of a racemate into a single stereoisomeric product in quantitative yield have been developed. A range of industrially relevant α-hydroxycarboxylic acids was deracemized in a stepwise fashion via lipase-catalysed enantioselective O-acylation, followed by mandelate racemase-catalysed racemization of the remaining non-reacted substrate enantiomer. Alternatively, aliphatic α-hydroxycarboxylic acids were enzymatically isomerized using whole resting cells of Lactobacillus spp. Enantioselective hydrolysis of rac-sec-alkyl sulphate esters was accomplished using novel alkyl sulphatases of microbial origin. The stereochemical path of catalysis could be controlled by choice of the biocatalyst. Whereas Rhodococcus ruber DSM 44541 and Sulfolobus acidocaldarius DSM 639 act through inversion of configuration, stereo-complementary retaining sulphatase activity was detected in the marine planctomycete Rhodopirellula baltica DSM 10527.
Collapse
|
166
|
|
167
|
Abstract
An efficient process for dynamic kinetic resolution of amines was developed by combining a ruthenium-catalyzed racemization with a lipase-catalyzed resolution. A variety of unfunctionalized primary amines were transformed into one enantiomer of the amide in high yield and high enantioselectivity.
Collapse
Affiliation(s)
- Jens Paetzold
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden
| | | |
Collapse
|
168
|
Mitchell D, Hay LA, Koenig TM, McDaniel S, Nissen JS, Audia JE. Classical and dynamic resolution of 1-amino-3-methyl-1,3,4,5-tetrahydrobenzo[d]azepin-2-one. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.10.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
169
|
Odman P, Wessjohann LA, Bornscheuer UT. Chemoenzymatic Dynamic Kinetic Resolution of Acyloins. J Org Chem 2005; 70:9551-5. [PMID: 16268632 DOI: 10.1021/jo051661n] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[Reaction: see text]. Acyloins (alpha-hydroxy ketones) are important building blocks in organic synthesis, e.g., for the total synthesis of epothilones. Optically pure acyloins can be obtained by lipase-catalyzed kinetic resolution (KR) of the racemate with, for example, Burkholderia cepacia lipase, but this process suffers from a yield limitation of 50%. To devise a dynamic kinetic resolution (DKR), we studied the racemization of two different acyloins and corresponding esters with various amine bases and ion exchangers. No combination of base and solvent was found that could selectively racemize the acyloin or corresponding ester under the conditions needed for a DKR. In contrast to bases, acidic resins (ARs) were found to racemize the acyloins selectively in n-hexane and in water. Unfortunately, the AR deactivated the lipase, preventing a one-pot DKR. Minor side reactions involving the AR, the substrate acyloin, and the vinyl ester acyl donor were also observed. However, an efficient DKR was made possible by the spatial separation of lipase and ion exchanger, with enzymatic transesterification and AR-catalyzed racemization taking place simultaneously in two compartments connected by a pump loop. The conversion of substrate alcohol was 91%, the selectivity toward the product butyrate ester 90%, and the enantiomeric excess of the (S)-product 93% ee.
Collapse
Affiliation(s)
- Peter Odman
- Department of Technical Chemistry and Biotechnology, Institute of Chemistry and Biochemistry, Greifswald University, Soldmannstrasse 16, D-17487 Greifswald, Germany
| | | | | |
Collapse
|
170
|
Anderson NG. Developing Processes for Crystallization-Induced Asymmetric Transformation. Org Process Res Dev 2005. [DOI: 10.1021/op050119y] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neal G. Anderson
- Anderson's Process Solutions, 7400 Griffin Lane, Jacksonville, Oregon 97530, U.S.A
| |
Collapse
|
171
|
Müller S, Ariaans GJ, Kaptein B, Broxterman QB, Bruggink A. Phase diagrams of diastereomeric pairs in inclusion resolution. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
172
|
Felfer U, Goriup M, Koegl M, Wagner U, Larissegger-Schnell B, Faber K, Kroutil W. The Substrate Spectrum of Mandelate Racemase: Minimum Structural Requirements for Substrates and Substrate Model. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200505012] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
173
|
|
174
|
Gutiérrez MC, Furstoss R, Alphand V. Microbiological Transformations 60. Enantioconvergent Baeyer-Villiger Oxidationvia a Combined Whole Cells and Ionic Exchange Resin-Catalysed Dynamic Kinetic Resolution Process. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200505048] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
175
|
Glueck SM, Pirker M, Nestl BM, Ueberbacher BT, Larissegger-Schnell B, Csar K, Hauer B, Stuermer R, Kroutil W, Faber K. Biocatalytic Racemization of Aliphatic, Arylaliphatic, and Aromatic α-Hydroxycarboxylic Acids. J Org Chem 2005; 70:4028-32. [PMID: 15876092 DOI: 10.1021/jo050156n] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Biocatalytic racemization of a range of aliphatic, (aryl)aliphatic, and aromatic alpha-hydroxycarboxylic acids was accomplished by using whole resting cells of a range of Lactobacillus spp. The mild (physiological) reaction conditions ensured an essentially "clean" isomerization in the absence of side reactions, such as elimination or decomposition. Whereas straight-chain aliphatic 2-hydroxycarboxylic acids were racemized with excellent rates (up to 85% relative to lactate), steric hindrance was observed for branched-chain analogues. Good rates were observed for aryl-alkyl derivatives, such as 3-phenyllactic acid (up to 59%) and 4-phenyl-2-hydroxybutanoic acid (up to 47%). In addition, also mandelate and its o-chloro analogue were accepted at a fair rate (45%). This biocatalytic racemization represents an important tool for the deracemization of a number of pharmaceutically important building blocks.
Collapse
Affiliation(s)
- Silvia M Glueck
- Department of Chemistry, Organic and Bioorganic Chemistry, University of Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | | | | | | | | | | | | | | | | | | |
Collapse
|
176
|
Wuyts S, De Temmerman K, De Vos DE, Jacobs PA. Acid Zeolites as Alcohol Racemization Catalysts: Screening and Application in Biphasic Dynamic Kinetic Resolution. Chemistry 2005; 11:386-97. [PMID: 15565578 DOI: 10.1002/chem.200400713] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Acid zeolites were screened as heterogeneous catalysts for racemization of benzylic alcohols. The most promising zeolites appeared to be H-Beta zeolites, for which the optimal reaction conditions were studied in further detail. The zeolite performance was compared to that of homogeneous acids and acid resins under similar reaction conditions. In a second part of the research, H-Beta zeolites were applied in dynamic kinetic resolution (DKR) of 1-phenylethanol, which was conducted by means of a two-phase approach and which resulted in yields smoothly crossing the 50% border up to 90%, with an enantiomeric excess of >99%. To explore the applicability of this biphasic methodology, several other substrates were examined in the standard racemization reaction and in the biphasic dynamic kinetic resolution.
Collapse
Affiliation(s)
- S Wuyts
- Centre for Surface Chemistry and Catalysis, KULeuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium
| | | | | | | |
Collapse
|
177
|
Glueck SM, Larissegger-Schnell B, Csar K, Kroutil W, Faber K. Biocatalytic racemisation of α-hydroxycarboxylic acids at physiological conditions. Chem Commun (Camb) 2005:1904-5. [PMID: 15795782 DOI: 10.1039/b418786e] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biocatalytic racemisation of aliphatic, aryl-aliphatic and aromatic alpha-hydroxycarboxylic acids was accomplished using whole resting cells of Lactobacillus paracasei DSM 20207; the mild (physiological) reaction conditions ensured an essentially 'clean' isomerization in the absence of side reactions, such as elimination or decomposition.
Collapse
Affiliation(s)
- Silvia M Glueck
- Department of Chemistry, Organic and Bioorganic Chemistry, Research Centre Applied Biocatalysis, University of Graz, Heinrichstrasse 28, A-8010 Graz, Austria.
| | | | | | | | | |
Collapse
|
178
|
Xu HW, Wang QW, Zhu J, Deng JG, Cun LF, Cui X, Wu J, Xu XL, Wu YL. Copper(ii)-mediated resolution of α-halo carboxylic acids with chiral O,O′-dibenzoyltartaric acid: spontaneous racemization and crystallization-induced dynamic resolution. Org Biomol Chem 2005; 3:4227-32. [PMID: 16294251 DOI: 10.1039/b510170k] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we present a new example of coordination-mediated resolution of racemic acids by a chiral acid. The reaction of copper(II) acetate monohydrate, optically pure O,O'-dibenzoyltartaric acid (DBTA) and racemic alpha-bromo-2-chlorophenylacetic acid (HL1) in acetonitrile solution afforded a binuclear copper(II) complex with D-DBTA dianion, alpha-bromo-2-chlorophenylacetate and acetate as ligands. After decomposition of the complex with acid, the optically active acid ((R)-HL1) was obtained. Similarly, alpha-bromo-2-fluorophenylacetic acid (HL2), alpha-bromo-2-bromophenylacetic acid (HL3), alpha-chloro-2-chlorophenylacetic acid (HL4), alpha-chloro-2-fluorophenylacetic acid (HL5), alpha-bromophenylacetic acid (HL6), alpha-bromo-4-chlorophenylacetic acid (HL7), 2-bromopropionic acid (HL8) and 2-chloropropionic acid (HL9) were resolved by the same method. Satisfactory results were obtained for HL2 to HL5. For HL6 and HL7, only racemic acids were obtained. For the two alpha-halo aliphatic acids (HL8 and HL9), poor enantioselectivity was obtained. It is more interesting that three acids (HL1, HL2 and HL3) could spontaneously racemize in acetonitrile solution, which resulted in crystallization-induced dynamic resolution (CIDR) with greater than 50% yield.
Collapse
Affiliation(s)
- Hong-wu Xu
- Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China
| | | | | | | | | | | | | | | | | |
Collapse
|
179
|
New perspectives for zeolites in fine chemical synthesis. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0167-2991(05)80467-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
|
180
|
Hirayama Y, Ikunaka M, Matsumoto J. An Expeditious Scalable Synthesis of (S)-2-Amino-5-methoxytetralin via Resolution. Org Process Res Dev 2004. [DOI: 10.1021/op0498363] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoshihiro Hirayama
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe 651-2241, Japan
| | - Masaya Ikunaka
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe 651-2241, Japan
| | - Jun Matsumoto
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe 651-2241, Japan
| |
Collapse
|
181
|
Kobler C, Effenberger F. Hydroxynitrile lyase-catalyzed addition of HCN to 2-substituted cyclopentanones. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.10.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
182
|
Ikunaka M. Biocatalysis from the perspective of an industrial practitioner: let a biocatalyst do a job that no chemocatalyst can. Catal Today 2004. [DOI: 10.1016/j.cattod.2004.06.110] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
183
|
Chaplin JA, Levin MD, Morgan B, Farid N, Li J, Zhu Z, McQuaid J, Nicholson LW, Rand CA, Burk MJ. Chemoenzymatic approaches to the dynamic kinetic asymmetric synthesis of aromatic amino acids. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.07.060] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
184
|
Posner PG, Motherwell PW. Tetrahedron reports on organic chemistry. Tetrahedron 2004. [DOI: 10.1016/s0040-4020(04)01396-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
185
|
Csjernyik G, Bogár K, Bäckvall JE. New efficient ruthenium catalysts for racemization of alcohols at room temperature. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.07.013] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
186
|
Marchalín S, Cvopová K, Kriz M, Baran P, Oulyadi H, Daïch A. New Resolution of 2-Formyl-1,4-DHP Derivatives Using CIDR Methodology. Facile Access to New Chiral Tricyclic Thiolactam. J Org Chem 2004; 69:4227-37. [PMID: 15176852 DOI: 10.1021/jo049706s] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
(R)- and (S)-alpha-phenylethylamine (alpha-PEA: 7) have been used separately to resolve successfully a racemate 2-formyl-1,4-DHP derivative 4. The process was based on the difference of the solubility of both Schiff bases (6) since one of them crystallized out from the solution. These imines obtained by condensation of (R)-alpha-PEA (7) or (S)-alpha-PEA (7) with aldehyde (rac-4) were separated and analyzed by X-ray diffraction, and their exposition to an hydrochloric hydrolysis conditions led to the enantiopure (4R)-4 or (4S)-4 in excellent yields. Separate condensation of other chiral (8 and 13) and racemic (18) amino thiols as auxiliary with rac-4, (4S)-4, or (4R)-4 is accompanied by an in situ crystallization-induced dynamic resolution, whereby one distereomer of thiazole template selectively precipitates and can be isolated by simple filtration in 76-82% yield with dr > 99. The thiazole species isolated from this process resulted from an amino aldehyde condensation followed by a spontaneous thiol-imine cycloaddition. Finally, the racemate (+/-)-(4R,2'R)-19 and the diastereomerically pure homologous (4S,2'R)-23 and (4R,2'S)-20 (obtained in good yields (79-82%) from 2-aminoethanethiol (18) and 2-formyl-1,4-DHP derivative rac-4, (4S)-4, or (4R)-4, respectively) were converted conveniently in a one-pot procedure into newly tricyclic thiolactams in the DHP series in racemic ((+/-)-(6R,9bR)-21, 72% yield)) and enantiopure ((6S,9bR)-24, 71% yield); (6R,9bS)-24, 70% yield) forms.
Collapse
Affiliation(s)
- Stefan Marchalín
- Department of Organic Chemistry, Slovak University of Technology, SK-81237 Bratislava, Slovak Republic
| | | | | | | | | | | |
Collapse
|
187
|
Meyers A, Nelson TD, Moorlag H, Rawson DJ, Meier A. Chiral oxazoline route to enantiomerically pure biphenyls: magnesio and copper mediated asymmetric hetero- and homo-coupling reactions. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.01.095] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
188
|
Lutje Spelberg JH, Tang L, Kellogg RM, Janssen DB. Enzymatic dynamic kinetic resolution of epihalohydrins. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.02.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
189
|
Tetrahedron reports on organic chemistry. Tetrahedron 2004. [DOI: 10.1016/s0040-4020(04)00315-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
190
|
Abstract
During the past decade a new concept has appeared in asymmetric catalysis involving the combination of a biocatalyst and a chemocatalyst in one 'pot' leading to efficient deracemization via dynamic kinetic resolution (DKR). Here, we outline the different strategies that have been developed for efficient chemoenzymatic DKR, in particular the powerful combination of an enzyme and a metal catalyst.
Collapse
Affiliation(s)
- Oscar Pàmies
- Department of Physical and Inorganic Chemistry, Rovira i Virgili University, Pl. Imperial Tarraco 1, 43005 Tarragona, Spain
| | | |
Collapse
|
191
|
Choi JH, Choi YK, Kim YH, Park ES, Kim EJ, Kim MJ, Park J. Aminocyclopentadienyl Ruthenium Complexes as Racemization Catalysts for Dynamic Kinetic Resolution of Secondary Alcohols at Ambient Temperature. J Org Chem 2004; 69:1972-7. [PMID: 15058942 DOI: 10.1021/jo0355799] [Citation(s) in RCA: 153] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aminocyclopentadienyl ruthenium complexes, which can be used as room-temperature racemization catalysts with lipases in the dynamic kinetic resolution (DKR) of secondary alcohols, were synthesized from cyclopenta-2,4-dienimines, Ru(3)(CO)(12), and CHCl(3): [2,3,4,5-Ph(4)(eta(5)-C(4)CNHR)]Ru(CO)(2)Cl (4: R = i-Pr; 5: R = n-Pr; 6: R = t-Bu), [2,5-Me(2)-3,4-Ph(2)(eta(5)-C(4)CNHR)]Ru(CO)(2)Cl (7: R = i-Pr; 8: R = Ph), and [2,3,4,5-Ph(4)(eta(5)-C(4)CNHAr)]Ru(CO)(2)Cl (9: Ar = p-NO(2)C(6)H(4); 10: Ar = p-ClC(6)H(4); 11: Ar = Ph; 12: Ar = p-OMeC(6)H(4); 13: Ar = p-NMe(2)C(6)H(4)). The tests in the racemization of (S)-4-phenyl-2-butanol showed that 7 is the most active catalyst, although the difference decreased in the DKR. Complex 4 was used in the DKR of various alcohols; at room temperature, not only simple alcohols but also functionalized ones such as allylic alcohols, alkynyl alcohols, diols, hydroxyl esters, and chlorohydrins were successfully transformed to chiral acetates. In mechanistic studies for the catalytic racemization, ruthenium hydride 14 appeared to be a key species. It was the major organometallic species in the racemization of (S)-1-phenylethanol with 4 and potassium tert-butoxide. In a separate experiment, (S)-1-phenylethanol was racemized catalytically by 14 in the presence of acetophenone.
Collapse
Affiliation(s)
- Jun Ho Choi
- National Research Laboratory of Chirotechnology, Department of Chemistry, Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Korea
| | | | | | | | | | | | | |
Collapse
|
192
|
Horvath A, Backvall JE. Mild and efficient palladium(ii)-catalyzed racemization of allenes. Chem Commun (Camb) 2004:964-5. [PMID: 15069496 DOI: 10.1039/b316482a] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Allenes undergo racemization in the presence of catalytic amounts of Pd(OAc)2/LiBr under mild conditions; the reaction proceeds via a bromopalladation-debromopalladation sequence and tolerates various functional groups.
Collapse
Affiliation(s)
- Attila Horvath
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | | |
Collapse
|
193
|
Posner PG, Motherwell PW. Tetrahedron reports on organic chemistry. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)01884-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
194
|
Lin HY, Tsai SW. Dynamic kinetic resolution of (R, S)-naproxen 2,2,2-trifluoroethyl ester via lipase-catalyzed hydrolysis in micro-aqueous isooctane. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1381-1177(03)00145-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
195
|
Posner PG, Motherwell PW. Tetrahedron reports on organic chemistry. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)01130-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
196
|
Rapid racemization of chiral non-racemic sec-alcohols catalyzed by (η5-C5(CH3)5)Ru complexes bearing tertiary phosphine–primary amine chelate ligands. Tetrahedron Lett 2003. [DOI: 10.1016/j.tetlet.2003.08.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
197
|
Wuyts S, De Temmerman K, De Vos D, Jacobs P. A zeolite-enzyme combination for biphasic dynamic kinetic resolution of benzylic alcohols. Chem Commun (Camb) 2003:1928-9. [PMID: 12932037 DOI: 10.1039/b305120j] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acid zeolites like H-Beta are efficient heterogeneous catalysts for racemization of benzylic alcohols in water; by combination of the racemization with an enzymatic kinetic resolution in a two-phase system, enantiomerically pure esters were obtained in high yield via a dynamic kinetic resolution.
Collapse
Affiliation(s)
- Stijn Wuyts
- Centre for Surface Chemistry and Catalysis, KULeuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium
| | | | | | | |
Collapse
|
198
|
Pàmies O, Bäckvall JE. Combined metal catalysis and biocatalysis for an efficient deracemization process. Curr Opin Biotechnol 2003; 14:407-13. [PMID: 12943850 DOI: 10.1016/s0958-1669(03)00097-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Driven by the demand to enhance the economic balance of chemical processes, the transformation of a racemate into a single stereoisomer (the deracemization process) is one of the most important areas of research. The recent development of the combined use of enzyme and metal catalysis has led to efficient deracemization processes. Dynamic kinetic resolution and cyclic deracemization processes have shown particular promise in this area.
Collapse
Affiliation(s)
- Oscar Pàmies
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden
| | | |
Collapse
|
199
|
Pàmies O, Bäckvall JE. Combination of enzymes and metal catalysts. A powerful approach in asymmetric catalysis. Chem Rev 2003; 103:3247-62. [PMID: 12914497 DOI: 10.1021/cr020029g] [Citation(s) in RCA: 464] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Oscar Pàmies
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | | |
Collapse
|
200
|
Sullivan R, Pyda M, Pak J, Wunderlich B, Thompson JR, Pagni R, Pan H, Barnes C, Schwerdtfeger P, Compton R. Search for Electroweak Interactions in Amino Acid Crystals. II. The Salam Hypothesis. J Phys Chem A 2003. [DOI: 10.1021/jp0225673] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rodney Sullivan
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Marek Pyda
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - J. Pak
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Bernard Wunderlich
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - James R. Thompson
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Richard Pagni
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Hongjun Pan
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Craig Barnes
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Peter Schwerdtfeger
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Robert Compton
- Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996, Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| |
Collapse
|