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Li S, Wen YH, Song J, Gong LZ. Asymmetric redox benzylation of enals enabled by NHC/Ru cooperative catalysis. SCIENCE ADVANCES 2023; 9:eadf5606. [PMID: 37075106 PMCID: PMC10115414 DOI: 10.1126/sciadv.adf5606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The development of general methods for asymmetric benzylation of prochiral carbon nucleophiles remains a challenge in organic synthesis. The merging of ruthenium catalysis and N-heterocyclic carbene (NHC) catalysis for asymmetric redox benzylation of enals has been achieved, which opens up strategic opportunities for the asymmetric benzylation reactions. A wide range of 3,3'-disubstituted oxindoles with a stereogenic quaternary carbon center widely existing in natural products and biologically interesting molecules is successfully obtained with excellent enantioselectivities [up to 99% enantiomeric excess (ee)]. The generality of this catalytic strategy was further highlighted by its successful application in the late-stage functionalization of oxindole skeletons. Furthermore, the linear correlation between ee values of NHC precatalyst and the product elucidated the independent catalytic cycle of either the NHC catalyst or the ruthenium complex.
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Affiliation(s)
- Shuai Li
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yu-Hua Wen
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jin Song
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China
- Corresponding author. (L.-Z. G.); (J. S.)
| | - Liu-Zhu Gong
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Hefei 230026, China
- Corresponding author. (L.-Z. G.); (J. S.)
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2
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Catalytic asymmetric Tsuji-Trost α-benzylation reaction of N-unprotected amino acids and benzyl alcohol derivatives. Nat Commun 2022; 13:2509. [PMID: 35523802 PMCID: PMC9076619 DOI: 10.1038/s41467-022-30277-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/20/2022] [Indexed: 01/07/2023] Open
Abstract
Catalytic asymmetric Tsuji–Trost benzylation is a promising strategy for the preparation of chiral benzylic compounds. However, only a few such transformations with both good yields and enantioselectivities have been achieved since this reaction was first reported in 1992, and its use in current organic synthesis is restricted. In this work, we use N-unprotected amino acid esters as nucleophiles in reactions with benzyl alcohol derivatives. A ternary catalyst comprising a chiral aldehyde, a palladium species, and a Lewis acid is used to promote the reaction. Both mono- and polycyclic benzyl alcohols are excellent benzylation reagents. Various unnatural optically active α-benzyl amino acids are produced in good-to-excellent yields and with good-to-excellent enantioselectivities. This catalytic asymmetric method is used for the formal synthesis of two somatostatin mimetics and the proposed structure of natural product hypoestestatin 1. A mechanism that plausibly explains the stereoselective control is proposed. The catalytic asymmetric benzylations of prochiral nucleophiles are very limited. Here, the authors disclose an asymmetric α−benzylation of N-unprotected amino acids with benzyl alcohol derivatives by a chiral aldehyde-involved catalytic system.
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Tsuji H, Suzuki K, Kawatsura M. Ruthenium-catalyzed stereospecific benzylic alkylation of optically active benzyl esters with malonate nucleophiles. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Scheetz PM, Chachula ST, Hughes RP, Glueck DS, Moore CE, Gembicky M, Rheingold AL. Synthesis, Structure, Dynamics, and Enantioface-Selective η 3-Benzyl Coordination in the Chiral Rhodium Complexes Rh(diphos*)(η 3-CH 2Ph). Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Perry M. Scheetz
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Sarah T. Chachula
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Russell P. Hughes
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - David S. Glueck
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Curtis E. Moore
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Milan Gembicky
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Arnold L. Rheingold
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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Onodera G, Kumagae H, Nakamura D, Hayasaki T, Fukuda T, Kimura M. Direct benzylation of amines with benzylic alcohols catalyzed by palladium/phosphine-borane catalyst system. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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6
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Lesot P, Aroulanda C, Berdagué P, Meddour A, Merlet D, Farjon J, Giraud N, Lafon O. Multinuclear NMR in polypeptide liquid crystals: Three fertile decades of methodological developments and analytical challenges. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2020; 116:85-154. [PMID: 32130960 DOI: 10.1016/j.pnmrs.2019.10.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
NMR spectroscopy of oriented samples makes accessible residual anisotropic intramolecular NMR interactions, such as chemical shift anisotropy (RCSA), dipolar coupling (RDC), and quadrupolar coupling (RQC), while preserving high spectral resolution. In addition, in a chiral aligned environment, enantiomers of chiral molecules or enantiopic elements of prochiral compounds adopt different average orientations on the NMR timescale, and hence produce distinct NMR spectra or signals. NMR spectroscopy in chiral aligned media is a powerful analytical tool, and notably provides unique information on (pro)chirality analysis, natural isotopic fractionation, stereochemistry, as well as molecular conformation and configuration. Significant progress has been made in this area over the three last decades, particularly using polypeptide-based chiral liquid crystals (CLCs) made of organic solutions of helically chiral polymers (as PBLG) in organic solvents. This review presents an overview of NMR in polymeric LCs. In particular, we describe the theoretical tools and the major NMR methods that have been developed and applied to study (pro)chiral molecules dissolved in such oriented solvents. We also discuss the representative applications illustrating the analytical potential of this original NMR tool. This overview article is dedicated to thirty years of original contributions to the development of NMR spectroscopy in polypeptide-based chiral liquid crystals.
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Affiliation(s)
- Philippe Lesot
- Université Paris Sud/Université Paris-Saclay, UMR CNRS 8182, Institut de Chimie Moléculaire et des Matériaux d'Orsay, ICMMO, Equipe RMN en Milieu Orienté, Bât. 410, 15 rue du Doyen Georges Poitou, F-91405 Orsay cedex, France; Centre National de la Recherche Scientifique (CNRS), France.
| | - Christie Aroulanda
- Université Paris Sud/Université Paris-Saclay, UMR CNRS 8182, Institut de Chimie Moléculaire et des Matériaux d'Orsay, ICMMO, Equipe RMN en Milieu Orienté, Bât. 410, 15 rue du Doyen Georges Poitou, F-91405 Orsay cedex, France
| | - Philippe Berdagué
- Université Paris Sud/Université Paris-Saclay, UMR CNRS 8182, Institut de Chimie Moléculaire et des Matériaux d'Orsay, ICMMO, Equipe RMN en Milieu Orienté, Bât. 410, 15 rue du Doyen Georges Poitou, F-91405 Orsay cedex, France
| | - Abdelkrim Meddour
- Université Paris Sud/Université Paris-Saclay, UMR CNRS 8182, Institut de Chimie Moléculaire et des Matériaux d'Orsay, ICMMO, Equipe RMN en Milieu Orienté, Bât. 410, 15 rue du Doyen Georges Poitou, F-91405 Orsay cedex, France
| | - Denis Merlet
- Université Paris Sud/Université Paris-Saclay, UMR CNRS 8182, Institut de Chimie Moléculaire et des Matériaux d'Orsay, ICMMO, Equipe RMN en Milieu Orienté, Bât. 410, 15 rue du Doyen Georges Poitou, F-91405 Orsay cedex, France
| | - Jonathan Farjon
- Centre National de la Recherche Scientifique (CNRS), France; Faculté des Sciences et Techniques de Nantes, UMR CNRS 6230, Chimie et Interdisciplinarité, Synthèse, Analyse, Modélisation, CEISAM, Equipe EBSI, BP 92208, 2 rue de la Houssinière, F-44322 Nantes cedex 3, France
| | - Nicolas Giraud
- Université Paris Descartes, Sorbonne Paris Cité, UMR CNRS 8601, Laboratory of Pharmacological and Toxicological Chemistry and Biochemistry, LPTCB, 45 rue des Saints Pères, F-75006 Paris, France
| | - Olivier Lafon
- Universite de Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR CNRS 8181, Unité de Catalyse et Chimie du Solide, UCCS, F-59000 Lille, France; Institut Universitaire de France (IUF), France
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Tsuji H, Hashimoto K, Kawatsura M. Nickel-Catalyzed Benzylic Substitution of Benzyl Esters with Malonates as a Soft Carbon Nucleophile. Org Lett 2019; 21:8837-8841. [DOI: 10.1021/acs.orglett.9b03475] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroaki Tsuji
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Keisuke Hashimoto
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Motoi Kawatsura
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
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Kuwano R, Yokogi M, Sakai K, Masaoka S, Miura T, Won S. Room-Temperature Benzylic Alkylation of Benzylic Carbonates: Improvement of Palladium Catalyst and Mechanistic Study. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ryoichi Kuwano
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Center for Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masashi Yokogi
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Center for Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shigeyuki Masaoka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takashi Miura
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Sungyong Won
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
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9
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Le Bras J, Muzart J. Production of Csp3-Csp3Bonds through Palladium-Catalyzed Tsuji-Trost-Type Reactions of (Hetero)Benzylic Substrates. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600094] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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10
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Zhao ZL, Gu Q, Wu XY, You SL. Pd(0)-catalyzed benzylation of indole through η3-benzyl palladium intermediate. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60191-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Franzoni I, Guénée L, Mazet C. A general Pd-catalyzed α- and γ-benzylation of aldehydes for the formation of quaternary centers. Org Biomol Chem 2015; 13:6338-43. [DOI: 10.1039/c5ob00702j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A palladium-catalyzed benzylation of α-branched aldehydes has been developed using benzyl methyl carbonates.
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Affiliation(s)
- Ivan Franzoni
- University of Geneva
- Department of Organic Chemistry
- 1211 Geneva-4
- Switzerland
| | - Laure Guénée
- University of Geneva
- Laboratoire de Cristallographie
- 1211 Geneva-4
- Switzerland
| | - Clément Mazet
- University of Geneva
- Department of Organic Chemistry
- 1211 Geneva-4
- Switzerland
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12
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Lesot P, Aroulanda C, Zimmermann H, Luz Z. Enantiotopic discrimination in the NMR spectrum of prochiral solutes in chiral liquid crystals. Chem Soc Rev 2015; 44:2330-75. [DOI: 10.1039/c4cs00260a] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Theory and applications to stereo- and bio-chemistry of the discrimination of enantiotopic elements observed in the NMR spectra of prochiral solutes dissolved in chiral liquid crystals are comprehensively discussed.
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Affiliation(s)
- Philippe Lesot
- Laboratoire de RMN en Milieu Orienté CNRS UMR 8182
- ICMMO
- 91405 Orsay cedex
- France
| | - Christie Aroulanda
- Laboratoire de RMN en Milieu Orienté CNRS UMR 8182
- ICMMO
- 91405 Orsay cedex
- France
| | - Herbert Zimmermann
- Abteilung Biophysik
- Max-Planck-Institut für Medizinische Forschung
- 69120 Heidelberg
- Germany
| | - Zeev Luz
- Weizmann Institute of Science
- Department of Chemical Physics
- Rehovot 76100
- Israel
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13
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Trost BM, Czabaniuk LC. Struktur und Reaktivität später Übergangsmetall- η3-Benzylkomplexe. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201305972] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Trost BM, Czabaniuk LC. Structure and Reactivity of Late Transition Metal η3-Benzyl Complexes. Angew Chem Int Ed Engl 2014; 53:2826-51. [DOI: 10.1002/anie.201305972] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/17/2013] [Indexed: 01/02/2023]
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15
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Swift EC, Jarvo ER. Asymmetric transition metal-catalyzed cross-coupling reactions for the construction of tertiary stereocenters. Tetrahedron 2013; 69:5799-5817. [PMID: 23956470 DOI: 10.1016/j.tet.2013.05.001] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Elizabeth C Swift
- Department of Chemistry, University of California, Irvine, California 92697-2025
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Blessley G, Holden P, Walker M, Brown JM, Gouverneur V. Palladium-catalyzed substitution and cross-coupling of benzylic fluorides. Org Lett 2012; 14:2754-7. [PMID: 22594918 DOI: 10.1021/ol300977f] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Benzylic fluorides are suitable substrates for Pd(0)-catalyzed Tsuji-Trost substitution using carbon, nitrogen, oxygen, and sulfur nucleophiles and for cross-coupling with phenylboronic acid. For the bifunctional substrate 4-chlorobenzyl fluoride, fine-tuning of the reaction conditions allows for the regioselective displacement of either the chlorine or fluorine substituent. The leaving group ability of fluoride vs other groups displaced in substitution is CF(3)CO(2) ≈ p-NO(2)C(6)H(4)CO(2) ≈ OCO(2)CH(3) > F > CH(3)CO(2), a ranking similar to allylic fluorides under Pd catalysis.
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Affiliation(s)
- George Blessley
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, UK
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17
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Ueno S, Komiya S, Tanaka T, Kuwano R. Intramolecular SN′-Type Aromatic Substitution of Benzylic Carbonates at their Para-Position. Org Lett 2011; 14:338-41. [DOI: 10.1021/ol203089k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Satoshi Ueno
- Department of Chemistry, Graduate School of Sciences, and International Research Center for Molecular Systems (IRCMS), Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Sadakazu Komiya
- Department of Chemistry, Graduate School of Sciences, and International Research Center for Molecular Systems (IRCMS), Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Takeshi Tanaka
- Department of Chemistry, Graduate School of Sciences, and International Research Center for Molecular Systems (IRCMS), Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Ryoichi Kuwano
- Department of Chemistry, Graduate School of Sciences, and International Research Center for Molecular Systems (IRCMS), Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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18
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Trost BM, Czabaniuk LC. Palladium-Catalyzed Asymmetric Benzylation of 3-Aryl Oxindoles. J Am Chem Soc 2010; 132:15534-6. [DOI: 10.1021/ja1079755] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Lara C. Czabaniuk
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
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