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Stereodivergent Desymmetrization of Simple Dicarboxylates via Branch‐Selective Pd/Cu Catalyzed Allylic Substitution. Chemistry 2022; 28:e202200273. [DOI: 10.1002/chem.202200273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Indexed: 11/07/2022]
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2
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Davison RT, Parker PD, Hou X, Chung CP, Augustine SA, Dong VM. Enantioselective Addition of α-Nitroesters to Alkynes. Angew Chem Int Ed Engl 2021; 60:4599-4603. [PMID: 33411337 DOI: 10.1002/anie.202014015] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/16/2020] [Indexed: 11/11/2022]
Abstract
By using Rh-H catalysis, we couple α-nitroesters and alkynes to prepare α-amino-acid precursors. This atom-economical strategy generates two contiguous stereocenters, with high enantio- and diastereocontrol. In this transformation, the alkyne undergoes isomerization to generate a RhIII -π-allyl electrophile, which is trapped by an α-nitroester nucleophile. A subsequent reduction with In powder transforms the allylic α-nitroesters to the corresponding α,α-disubstituted α-amino esters.
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Affiliation(s)
- Ryan T Davison
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Patrick D Parker
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Xintong Hou
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Crystal P Chung
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Sara A Augustine
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Vy M Dong
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
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Davison RT, Parker PD, Hou X, Chung CP, Augustine SA, Dong VM. Enantioselective Addition of α‐Nitroesters to Alkynes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ryan T. Davison
- Department of Chemistry University of California, Irvine Irvine CA 92697 USA
| | - Patrick D. Parker
- Department of Chemistry University of California, Irvine Irvine CA 92697 USA
| | - Xintong Hou
- Department of Chemistry University of California, Irvine Irvine CA 92697 USA
| | - Crystal P. Chung
- Department of Chemistry University of California, Irvine Irvine CA 92697 USA
| | - Sara A. Augustine
- Department of Chemistry University of California, Irvine Irvine CA 92697 USA
| | - Vy M. Dong
- Department of Chemistry University of California, Irvine Irvine CA 92697 USA
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Ma C, Zhou JY, Zhang YZ, Mei GJ, Shi F. Catalytic Asymmetric [2+3] Cyclizations of Azlactones with Azonaphthalenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801349] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Chun Ma
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Jia-Yu Zhou
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Yi-Zhu Zhang
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Guang-Jian Mei
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
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Ma C, Zhou JY, Zhang YZ, Mei GJ, Shi F. Catalytic Asymmetric [2+3] Cyclizations of Azlactones with Azonaphthalenes. Angew Chem Int Ed Engl 2018; 57:5398-5402. [DOI: 10.1002/anie.201801349] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Chun Ma
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Jia-Yu Zhou
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Yi-Zhu Zhang
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Guang-Jian Mei
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science; Jiangsu Normal University; Xuzhou 221116 China
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Saito A, Kumagai N, Shibasaki M. Cu/Pd Synergistic Dual Catalysis: Asymmetric α‐Allylation of an α‐CF
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Amide. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702113] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Akira Saito
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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Saito A, Kumagai N, Shibasaki M. Cu/Pd Synergistic Dual Catalysis: Asymmetric α‐Allylation of an α‐CF
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Amide. Angew Chem Int Ed Engl 2017; 56:5551-5555. [DOI: 10.1002/anie.201702113] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/24/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Akira Saito
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) Tokyo 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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Felker I, Pupo G, Kraft P, List B. Design and Enantioselective Synthesis of Cashmeran Odorants by Using “Enol Catalysis”. Angew Chem Int Ed Engl 2015; 54:1960-4. [DOI: 10.1002/anie.201409591] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Indexed: 11/09/2022]
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Felker I, Pupo G, Kraft P, List B. Design und enantioselektive Synthese von Cashmeran-Riechstoffen mithilfe der “Enol-Katalyse”. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409591] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Trost BM, Czabaniuk LC. Palladium-Catalyzed Asymmetric Benzylation of Azlactones. Chemistry 2013; 19:15210-8. [DOI: 10.1002/chem.201302390] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Indexed: 11/09/2022]
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Tajima Y, Kobayashi M, Noguchi K, Tanaka K. Rhodium-Catalyzed Cyclization Reactions of γ-Alkynyl Aldehydes with Carboxylic Acid Anhydrides. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300734] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hong AY, Stoltz BM. The Construction of All-Carbon Quaternary Stereocenters by Use of Pd-Catalyzed Asymmetric Allylic Alkylation Reactions in Total Synthesis. European J Org Chem 2013; 2013:2745-2759. [PMID: 24944521 PMCID: PMC4059687 DOI: 10.1002/ejoc.201201761] [Citation(s) in RCA: 292] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Indexed: 11/08/2022]
Abstract
All-carbon quaternary stereocenters have posed significant challenges in the synthesis of complex natural products. These important structural motifs have inspired the development of broadly applicable palladium-catalyzed asymmetric allylic alkylation reactions of unstabilized non-biased enolates for the synthesis of enantioenriched α-quaternary products. This microreview outlines key considerations in the application of palladium-catalyzed asymmetric allylic alkylation reactions and presents recent total syntheses of complex natural products that have employed these powerful transformations for the direct, catalytic, enantioselective construction of all-carbon quaternary stereocenters.
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Affiliation(s)
- Allen Y. Hong
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125, USA, Homepage: http://stoltz.caltech.edu
| | - Brian M. Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125, USA, Homepage: http://stoltz.caltech.edu
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Trost BM, Michaelis DJ, Charpentier J, Xu J. Palladium-catalyzed allylic alkylation of carboxylic acid derivatives: N-acyloxazolinones as ester enolate equivalents. Angew Chem Int Ed Engl 2012; 51:204-8. [PMID: 22095749 PMCID: PMC3517038 DOI: 10.1002/anie.201105801] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 09/02/2011] [Indexed: 11/11/2022]
Abstract
A general asymmetric allylic alkylation of ester enolate equivalents at the carboxylic acid oxidation state is reported. N -Acylbenzoxazolinone-derived enol carbonates are synthesized in good yield and employed in the palladium-catalyzed alkylation reaction. Good yields (up to 99%) and enantioselectivities (up to 99% ee) are obtained and the imide products are readily converted to a series of carboxylic acid derivatives without loss of enantiopurity. High enantioselectivity in the reaction is achieved by a new strategy for ligand design involving variation of the steric properties of the diarylphosphine moiety.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.
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Trost BM, Michaelis DJ, Charpentier J, Xu J. Palladium-Catalyzed Allylic Alkylation of Carboxylic Acid Derivatives: N-Acyloxazolinones as Ester Enolate Equivalents. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105801] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhang K, Peng Q, Hou XL, Wu YD. Highly Enantioselective Palladium-Catalyzed Alkylation of Acyclic Amides. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704629] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhang K, Peng Q, Hou XL, Wu YD. Highly Enantioselective Palladium-Catalyzed Alkylation of Acyclic Amides. Angew Chem Int Ed Engl 2008; 47:1741-4. [DOI: 10.1002/anie.200704629] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lu Z, Ma S. Metal-catalyzed enantioselective allylation in asymmetric synthesis. Angew Chem Int Ed Engl 2008; 47:258-97. [PMID: 17968865 DOI: 10.1002/anie.200605113] [Citation(s) in RCA: 1202] [Impact Index Per Article: 75.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Metal-catalyzed enantioselective allylation, which involves the substitution of allylic metal intermediates with a diverse range of different nucleophiles or S(N)2'-type allylic substitution, leads to the formation of C-H, -C, -O, -N, -S, and other bonds with very high levels of asymmetric induction. The reaction may tolerate a broad range of functional groups and has been applied successfully to the synthesis of many natural products and new chiral compounds.
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Affiliation(s)
- Zhan Lu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, China
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Lu Z, Ma S. Metallkatalysierte enantioselektive Allylierungen in der asymmetrischen Synthese. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200605113] [Citation(s) in RCA: 405] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Trost BM, Frederiksen MU, Rudd MT. Ruthenium-catalyzed reactions--a treasure trove of atom-economic transformations. Angew Chem Int Ed Engl 2006; 44:6630-66. [PMID: 16206300 DOI: 10.1002/anie.200500136] [Citation(s) in RCA: 452] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The demand for new chemicals spanning the fields of health care to materials science combined with the pressure to produce these substances in an environmentally benign fashion pose great challenges to the synthetic chemical community. The maximization of synthetic efficiency by the conversion of simple building blocks into complex targets remains a fundamental goal. In this context, ruthenium complexes catalyze a number of non-metathesis conversions and allow the rapid assembly of complex molecules with high selectivity and atom economy. These complexes often exhibit unusual reactivity. Careful consideration of the mechanistic underpinnings of the transformations can lead to the design of new reactions and the discovery of new reactivity.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.
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Trost BM, Frederiksen MU, Rudd MT. Ruthenium-katalysierte Reaktionen - eine Schatzkiste für atomökonomische Umwandlungen. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500136] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
Palladium-catalyzed asymmetric allylic alkylation of nonstabilized ketone enolates to generate quaternary centers has been achieved in excellent yield and enantioselectivity. Optimized conditions consist of performing the reaction in the presence of two equivalents of LDA as base, one equivalent of trimethytin chloride as a Lewis acid, 1,2-dimethoxyethane as the solvent, and a catalytic amount of a chiral palladium complex formed from pi-allyl palladium chloride dimer 3 and cyclohexyldiamine derived chiral ligand 4. Linearly substituted, acyclic 1,3-dialkyl substituted, and unsubstituted allylic carbonates function well as electrophiles. A variety of alpha-tetralones, cyclohexanones, and cyclopentanones can be employed as nucleophiles. The absolute configuration generated is consistent with the current model in which steric factors control stereofacial differentiation. The quaternary substituted products available by this method are versatile substrates for further elaboration.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.
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Schleusner M, Gais HJ, Koep S, Raabe G. Highly selective addition of chiral, sulfonimidoyl substituted bis(allyl)titanium complexes to N-sulfonyl alpha-imino esters: asymmetric synthesis of gamma,delta-unsaturated alpha-amino acids bearing a chiral, electron-withdrawing nucleofuge at the delta-position. J Am Chem Soc 2002; 124:7789-800. [PMID: 12083933 DOI: 10.1021/ja0201799] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Selective addition of the chiral, sulfonimidoyl substituted bis(allyl)titanium complexes 5a-d, which are configurationally labile in regard to the Calpha-atoms, to N-toluenesulfonyl (Ts)-, N-2-trimethylsilylethanesulfonyl (SES)-, and N-tert-butylsulfonyl (Bus) alpha-imino ester (9a-c) in the presence of Ti(OiPr)(4) and ClTi(OiPr)(3) afforded with high regio- and diastereoselectivities in good yields the (syn, E)-configured beta-alkyl-gamma,delta-unsaturated alpha-amino acid derivatives 2a-g, which carry a chiral, electron-withdrawing nucleofuge at the delta-position and a cyclohexyl, an isopropyl, a phenyl, and a methyl group at the beta-position. Addition of the cyclic bis(allyl)titanium complex 14 to N-Bus alpha-imino ester 9c afforded with similar high regio- and diastereoselectivities the (E)- and (Z)-configured amino acid derivatives (E)-8 and (Z)-8. Reaction of complexes 5a-d with alpha-imino esters 9a-c in the presence of Ti(OiPr)(4) occurs stepwise to give first the mono(allyl)titanium complexes containing 2a-g as ligands, which react in the presence of ClTi(OiPr)(3) with a second molecule of 9a-c with formation of two molecules of 2a-g. Formation of (S,R,E)-configured homoallylic amines 2a-g entails Si,Re,E processes of alpha-imino esters 9a-c with the (R,R)-configured bis(allyl)titanium complexes (R,R)-5a-d and (R)-configured mono(allyl)titanium complexes (R)-17a-d, both of which are most likely in rapid equilibrium with their (S,S)-diastereomers and (S)-diastereomers, respectively. Interestingly, in the reaction of 5a-d with aldehydes, the (S,S)-configured complexes (S,S)-5a-d are the ones which react faster. Reaction of the N-titanated amino acid derivatives Ti-2a and Ti-2b with N-Ts alpha-imino ester 9a led to the highly diastereoselective formation of imidazolidinones 15a and 15b, respectively. Cleavage of the sulfonamide group of the N-Bus amino acid derivative 2d with CF(3)SO(3)H gave quantitatively the sulfonimidoyl functionalized amino acid H-2d. A Ni-catalyzed cross-coupling reaction of the amino acid derivative 2e with ZnPh(2) led to a substitution of the sulfonimidoyl group by a phenyl group and furnished the enantiomerically pure protected alpha-amino acid Bus-1. Two new N-sulfonyl alpha-imino esters, the SES and the Bus alpha-imino esters 9b and 9c, respectively, have been synthesized from the corresponding sulfonamides by the Kresze method in medium to good yields. The N-SES alpha-imino ester 9b and the N-Bus alpha-imino ester 9c should find many synthetic applications, in particular, in cases where the N-Ts alpha-imino ester 9a had been used before.
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Affiliation(s)
- Marcel Schleusner
- Institut für Organische Chemie der Rheinisch-Westfälischen Technischen Hochschule (RWTH) Aachen, Professor-Pirlet-Strasse 1, D-52056 Aachen, Germany
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Kazmaier U, Zumpe FL. Chelatisierte Aminosäureesterenolate – effiziente Nucleophile für Palladium-katalysierte allylische Alkylierungen. Angew Chem Int Ed Engl 1999. [DOI: 10.1002/(sici)1521-3757(19990517)111:10<1572::aid-ange1572>3.0.co;2-u] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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