1451
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Sasaki K, Crich D. Facile Amide Bond Formation from Carboxylic Acids and Isocyanates. Org Lett 2011; 13:2256-9. [DOI: 10.1021/ol200531k] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kaname Sasaki
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91190 Gif-sur-Yvette, France
| | - David Crich
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91190 Gif-sur-Yvette, France
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1452
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Abstract
Amongst the many ways of constructing the amide bond, there has been a growing interest in the use of metal-catalysed methods for preparing this important functional group. In this tutorial review, highlights of the recent literature have been presented covering the key areas where metal catalysts have been used in amide bond formation. Acids and esters have been used in coupling reactions with amines, but aldehydes and alcohols have also been used in oxidative couplings. The use of nitriles and oximes as starting materials for amide formation are also emerging areas of interest. The use of carbon monoxide in the transition metal catalysed coupling of amines has led to a powerful methodology for amide bond formation and this is complemented by the addition of an aryl or alkenyl group to an amide typically using palladium or copper catalysts.
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Affiliation(s)
- C Liana Allen
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
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1453
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Eckes F, Deiters E, Métivet A, Bulach V, Hosseini MW. Synthesis and Structural Analysis of Porphyrin-Based Polynucleating Ligands Bearing 8-Methoxy- and 8-(Allyloxy)quinoline Units. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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1454
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Su YH, Chiang LW, Jeng KC, Huang HL, Chen JT, Lin WJ, Huang CW, Yu CS. Solution-phase parallel synthesis and screening of anti-tumor activities from fenbufen and ethacrynic acid libraries. Bioorg Med Chem Lett 2011; 21:1320-4. [DOI: 10.1016/j.bmcl.2011.01.068] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 12/31/2010] [Accepted: 01/17/2011] [Indexed: 01/09/2023]
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1455
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Prades A, Peris E, Albrecht M. Oxidations and Oxidative Couplings Catalyzed by Triazolylidene Ruthenium Complexes. Organometallics 2011. [DOI: 10.1021/om101145y] [Citation(s) in RCA: 223] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amparo Prades
- Dpto. de Química Inorgánica y Orgánica, Universitat Jaume I, Avda. Vicente Sos Baynat s/n, 12071 Castellón, Spain
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Eduardo Peris
- Dpto. de Química Inorgánica y Orgánica, Universitat Jaume I, Avda. Vicente Sos Baynat s/n, 12071 Castellón, Spain
| | - Martin Albrecht
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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1456
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Scully CC, Lau YH, Jensen P, Rutledge PJ. Synthesis, electrochemistry and metal binding properties of monosubstituted ferrocenoyl peptides with thioether-containing sidechains. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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1457
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Hunter L, Jolliffe KA, Jordan MJT, Jensen P, Macquart RB. Synthesis and Conformational Analysis of α,β-Difluoro-γ-amino Acid Derivatives. Chemistry 2011; 17:2340-3. [DOI: 10.1002/chem.201003320] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Indexed: 11/07/2022]
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1458
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Chen Y, Kamlet AS, Steinman JB, Liu DR. A biomolecule-compatible visible-light-induced azide reduction from a DNA-encoded reaction-discovery system. Nat Chem 2011; 3:146-53. [PMID: 21258388 PMCID: PMC3078041 DOI: 10.1038/nchem.932] [Citation(s) in RCA: 218] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 11/10/2010] [Indexed: 01/22/2023]
Abstract
Using a system that accelerates the serendipitous discovery of new reactions by evaluating hundreds of DNA-encoded substrate combinations in a single experiment, we explored a broad range of reaction conditions for new bond-forming reactions. We discovered reactivity that led to a biomolecule-compatible, Ru(II)-catalyzed, visible light-induced azide reduction reaction. In contrast with current azide reduction methods, this reaction is highly chemoselective and is compatible with alcohols, phenols, acids, alkenes, alkynes, aldehydes, alkyl halides, alkyl mesylates, and disulfides. The remarkable functional group compatibility and mild conditions of this reaction enabled azide reduction to be performed on nucleic acid and oligosaccharide substrates without the detectable occurrence of side reactions. The reaction was also performed in the presence of a protein enzyme without loss of enzymatic activity, in contrast with two commonly used azide reduction methods. The visible light dependence of this reaction provides a means of photouncaging functional groups such as amines and carboxylates on biological macromolecules without using UV irradiation.
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Affiliation(s)
- Yiyun Chen
- Howard Hughes Medical Institute, Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA
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1459
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Affiliation(s)
- Robert H. Crabtree
- Chemistry Department, Yale University, 225 Prospect Street, New Haven, Connecticut 06520−8107, United States
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1460
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Chen C, Hong SH. Oxidative amide synthesis directly from alcohols with amines. Org Biomol Chem 2011; 9:20-6. [DOI: 10.1039/c0ob00342e] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1461
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Gros CP, Eggenspiller A, Nonat A, Barbe JM, Denat F. New potential bimodal imaging contrast agents based on DOTA-like and porphyrin macrocycles. MEDCHEMCOMM 2011. [DOI: 10.1039/c0md00205d] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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1462
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Lattuada L, Barge A, Cravotto G, Giovenzana GB, Tei L. The synthesis and application of polyamino polycarboxylic bifunctional chelating agents. Chem Soc Rev 2011; 40:3019-49. [DOI: 10.1039/c0cs00199f] [Citation(s) in RCA: 139] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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1463
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Starkov P, Sheppard TD. Borate esters as convenient reagents for direct amidation of carboxylic acids and transamidation of primary amides. Org Biomol Chem 2011; 9:1320-3. [DOI: 10.1039/c0ob01069c] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1464
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Zhu Y, Chuanzhao L, Biying AO, Sudarmadji M, Chen A, Tuan DT, Seayad AM. Stabilized well-dispersed Pd(0) nanoparticles for aminocarbonylation of aryl halides. Dalton Trans 2011; 40:9320-5. [DOI: 10.1039/c1dt10927h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1465
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Romieu A, Bruckdorfer T, Clavé G, Grandclaude V, Massif C, Renard PY. N-Fmoc-α-sulfo-β-alanine: a versatile building block for the water solubilisation of chromophores and fluorophores by solid-phase strategy. Org Biomol Chem 2011; 9:5337-42. [DOI: 10.1039/c1ob05730h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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1466
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Zhang P, Chu H, Li X, Feng W, Deng P, Yuan L, Gong B. Alternative Strategy for Adjusting the Association Specificity of Hydrogen-Bonded Duplexes. Org Lett 2010; 13:54-7. [DOI: 10.1021/ol102522m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Penghui Zhang
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China, and Department of Chemistry, The State University of New York, Buffalo, New York 14260, United States
| | - Hongzhu Chu
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China, and Department of Chemistry, The State University of New York, Buffalo, New York 14260, United States
| | - Xianghui Li
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China, and Department of Chemistry, The State University of New York, Buffalo, New York 14260, United States
| | - Wen Feng
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China, and Department of Chemistry, The State University of New York, Buffalo, New York 14260, United States
| | - Pengchi Deng
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China, and Department of Chemistry, The State University of New York, Buffalo, New York 14260, United States
| | - Lihua Yuan
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China, and Department of Chemistry, The State University of New York, Buffalo, New York 14260, United States
| | - Bing Gong
- College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China, and Department of Chemistry, The State University of New York, Buffalo, New York 14260, United States
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1467
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Touahir L, Allongue P, Aureau D, Boukherroub R, Chazalviel JN, Galopin E, Gouget-Laemmel A, de Villeneuve CH, Moraillon A, Niedziółka-Jönsson J, Ozanam F, Andresa JS, Sam S, Solomon I, Szunerits S. Molecular monolayers on silicon as substrates for biosensors. Bioelectrochemistry 2010; 80:17-25. [DOI: 10.1016/j.bioelechem.2010.03.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 03/12/2010] [Accepted: 03/18/2010] [Indexed: 10/19/2022]
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1468
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Shi F, Li J, Li C, Jia X. Samarium-mediated mild and facile method for the synthesis of amides. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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1469
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Allen CL, Davulcu S, Williams JMJ. Catalytic acylation of amines with aldehydes or aldoximes. Org Lett 2010; 12:5096-9. [PMID: 20945850 DOI: 10.1021/ol101978h] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The simple nickel salt NiCl(2)·6H(2)O catalyzes the coupling of aldoximes with amines to give secondary or tertiary amide products. The aldoxime can be prepared in situ from the corresponding aldehyde. The use of (18)O-labeled oximes has allowed insight into the mechanism of this reaction.
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Affiliation(s)
- C Liana Allen
- Department of Chemistry, University of Bath, Claverton Down, Bath, U.K., BA2 7AY
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1470
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Feng C, Liu Y, Peng S, Shuai Q, Deng G, Li CJ. Ruthenium-Catalyzed Tertiary Amine Formation from Nitroarenes and Alcohols. Org Lett 2010; 12:4888-91. [DOI: 10.1021/ol1020527] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chao Feng
- Key Laboratory for Environmental Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China, and Department of Chemistry, McGill University, Montreal, QC H3A2K6, Canada
| | - Yong Liu
- Key Laboratory for Environmental Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China, and Department of Chemistry, McGill University, Montreal, QC H3A2K6, Canada
| | - Shengming Peng
- Key Laboratory for Environmental Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China, and Department of Chemistry, McGill University, Montreal, QC H3A2K6, Canada
| | - Qi Shuai
- Key Laboratory for Environmental Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China, and Department of Chemistry, McGill University, Montreal, QC H3A2K6, Canada
| | - Guojun Deng
- Key Laboratory for Environmental Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China, and Department of Chemistry, McGill University, Montreal, QC H3A2K6, Canada
| | - Chao-Jun Li
- Key Laboratory for Environmental Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China, and Department of Chemistry, McGill University, Montreal, QC H3A2K6, Canada
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1471
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Schmidt SW, Christ T, Glockner C, Beyer MK, Clausen-Schaumann H. Simple coupling chemistry linking carboxyl-containing organic molecules to silicon oxide surfaces under acidic conditions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:15333-15338. [PMID: 20822126 DOI: 10.1021/la102435f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The coupling chemistry of carboxymethylated amylose with organo-silanized silicon oxide surfaces at pH 7.4 and 2.0 was investigated using atomic force microscopy (AFM) based single-molecule force spectroscopy. At close to neutral pH, carbodiimide activation of a carboxylic acid affords formation of an amide bond with an amino surface linker. At pH 2.0, no activation with carbodiimide was required to anchor carboxymethylated amylose between an AFM tip and a glass substrate. At the same time, the mean bond rupture force f(r) dropped from 1.65 ± 0.37 nN at pH 7.4 to 1.39 ± 0.30 nN at pH 2.0 without carbodiimide, indicating that a different link to the surface can be formed at low pH. The coupling mechanism at pH 2.0 was elucidated by a series of experiments, in which the surface was functionalized with four different organosilanes, each containing characteristic functional groups. The results are rationalized with an acid-catalyzed ester condensation between a carboxyl group and a free, unreacted silanol group in the surface anchor or on the surface.
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Affiliation(s)
- Sebastian W Schmidt
- Department of Precision- and Micro-Engineering, Engineering Physics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich, Germany
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1472
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Dam JH, Osztrovszky G, Nordstrøm LU, Madsen R. Amide synthesis from alcohols and amines catalyzed by ruthenium N-heterocyclic carbene complexes. Chemistry 2010; 16:6820-7. [PMID: 20437429 DOI: 10.1002/chem.201000569] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The direct synthesis of amides from alcohols and amines is described with the simultaneous liberation of dihydrogen. The reaction does not require any stoichiometric additives or hydrogen acceptors and is catalyzed by ruthenium N-heterocyclic carbene complexes. Three different catalyst systems are presented that all employ 1,3-diisopropylimidazol-2-ylidene (IiPr) as the carbene ligand. In addition, potassium tert-butoxide and a tricycloalkylphosphine are required for the amidation to proceed. In the first system, the active catalyst is generated in situ from [RuCl(2)(cod)] (cod=1,5-cyclooctadiene), 1,3-diisopropylimidazolium chloride, tricyclopentylphosphonium tetrafluoroborate, and base. The second system uses the complex [RuCl(2)(IiPr)(p-cymene)] together with tricyclohexylphosphine and base, whereas the third system employs the Hoveyda-Grubbs 1st-generation metathesis catalyst together with 1,3-diisopropylimidazolium chloride and base. A range of different primary alcohols and amines have been coupled in the presence of the three catalyst systems to afford the corresponding amides in moderate to excellent yields. The best results are obtained with sterically unhindered alcohols and amines. The three catalyst systems do not show any significant differences in reactivity, which indicates that the same catalytically active species is operating. The reaction is believed to proceed by initial dehydrogenation of the primary alcohol to the aldehyde that stays coordinated to ruthenium and is not released into the reaction mixture. Addition of the amine forms the hemiaminal that undergoes dehydrogenation to the amide. A catalytic cycle is proposed with the {(IiPr)Ru(II)} species as the catalytically active components.
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Affiliation(s)
- Johan Hygum Dam
- Department of Chemistry, Building 201, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
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1473
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Muthaiah S, Ghosh SC, Jee JE, Chen C, Zhang J, Hong SH. Direct amide synthesis from either alcohols or aldehydes with amines: activity of Ru(II) hydride and Ru(0) complexes. J Org Chem 2010; 75:3002-6. [PMID: 20369820 DOI: 10.1021/jo100254g] [Citation(s) in RCA: 170] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An in situ generated catalyst from readily available RuH(2)(PPh(3))(4), an N-heterocyclic carbene (NHC) precursor, NaH, and acetonitrile was developed. The catalyst showed high activity for the amide synthesis directly from either alcohols or aldehydes with amines. When a mixture of an alcohol and an aldehyde was reacted with an amine, both of the corresponding amides were obtained with good yields. Homogeneous Ru(0) complexes such as (eta(4)-1,5-cyclooctadiene)(eta(6)-1,3,5-cyclooctatriene)ruthenium [Ru(cod)(cot)] and Ru(3)(CO)(12) were also active in the amidation of an alcohol or an aldehyde with the help of an in situ generated NHC ligand.
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Affiliation(s)
- Senthilkumar Muthaiah
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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1474
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Shirokane K, Kurosaki Y, Sato T, Chida N. A Direct Entry to Substituted N-Methoxyamines from N-Methoxyamides via N-Oxyiminium Ions. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001127] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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1475
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Shirokane K, Kurosaki Y, Sato T, Chida N. A Direct Entry to Substituted N-Methoxyamines from N-Methoxyamides via N-Oxyiminium Ions. Angew Chem Int Ed Engl 2010; 49:6369-72. [DOI: 10.1002/anie.201001127] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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1476
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1477
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Abstract
The amide bond is one of nature's most common functional and structural elements, as the backbones of all natural peptides and proteins are composed of amide bonds. Amides are also present in many therapeutic small molecules. The construction of amide bonds using available methods relies principally on dehydrative approaches, although oxidative and radical-based methods are representative alternatives. In nearly every example, carbon and nitrogen bear electrophilic and nucleophilic character, respectively, during the carbon-nitrogen bond-forming step. Here we show that activation of amines and nitroalkanes with an electrophilic iodine source can lead directly to amide products. Preliminary observations support a mechanism in which the polarities of the two reactants are reversed (German, umpolung) during carbon-nitrogen bond formation relative to traditional approaches. The use of nitroalkanes as acyl anion equivalents provides a conceptually innovative approach to amide and peptide synthesis, and one that might ultimately provide for efficient peptide synthesis that is fully reliant on enantioselective methods.
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1478
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Affiliation(s)
- Dale E. Ward
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Sandip G. Pardeshi
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
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1479
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Lataifeh A, Kraatz HB. Ferrocene–Aspartate Dendrimers: Conformational Analysis and Electrochemical Studies. J Inorg Organomet Polym Mater 2010. [DOI: 10.1007/s10904-010-9381-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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1480
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Bacsa B, Bosze S, Kappe CO. Direct solid-phase synthesis of the beta-amyloid (1-42) peptide using controlled microwave heating. J Org Chem 2010; 75:2103-6. [PMID: 20180552 DOI: 10.1021/jo100136r] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Standard linear Fmoc/t-Bu solid-phase synthesis of the 42-mer beta-amyloid (1-42) peptide was achieved under controlled microwave conditions at 86 degrees C using inexpensive DIC/HOBt as coupling reagent on ChemMatrix resin. In order to avoid racemization of the sensitive amino acids, the coupling of the three His residues in the difficult peptide sequence was performed at room temperature. The desired peptide was obtained within 15 h overall processing time in high yield and purity (78% crude yield).
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Affiliation(s)
- Bernadett Bacsa
- Christian Doppler Laboratory for Microwave Chemistry and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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1481
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Ghosh SC, Hong SH. Simple RuCl3-Catalyzed Amide Synthesis from Alcohols and Amines. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000362] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1482
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1483
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Kawashima Y, Yasuhira K, Shibata N, Matsuura Y, Tanaka Y, Taniguchi M, Miyoshi Y, Takeo M, Kato DI, Higuchi Y, Negoro S. Enzymatic synthesis of nylon-6 units in organic solvents containing low concentrations of water. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcatb.2010.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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1484
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El-Faham A, Subirós-Funosas R, Albericio F. A Novel Family of Onium Salts Based Upon Isonitroso Meldrum's Acid Proves Useful as Peptide Coupling Reagents. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000314] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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1485
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Formica M, Fusi V, Giorgi L, Macedi E, Piersanti G, Varrese MA, Zappia G. Synthesis, binding and fluorescence studies of a new neutral H-bonding receptor for anions based on 3,5-bis(trifluoromethyl)phenylurea. Supramol Chem 2010. [DOI: 10.1080/10610271003731146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mauro Formica
- a Institute of Chemical Sciences, University of Urbino , Piazza Rinascimento 6, I-61029, Urbino, Italy
| | - Vieri Fusi
- a Institute of Chemical Sciences, University of Urbino , Piazza Rinascimento 6, I-61029, Urbino, Italy
| | - Luca Giorgi
- a Institute of Chemical Sciences, University of Urbino , Piazza Rinascimento 6, I-61029, Urbino, Italy
| | - Eleonora Macedi
- a Institute of Chemical Sciences, University of Urbino , Piazza Rinascimento 6, I-61029, Urbino, Italy
| | - Giovanni Piersanti
- b Institute of Pharmaceutical Chemistry, University of Urbino , Piazza Rinascimento 6, I-61029, Urbino, Italy
| | - Maria Antonietta Varrese
- b Institute of Pharmaceutical Chemistry, University of Urbino , Piazza Rinascimento 6, I-61029, Urbino, Italy
| | - Giovanni Zappia
- b Institute of Pharmaceutical Chemistry, University of Urbino , Piazza Rinascimento 6, I-61029, Urbino, Italy
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1486
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Allen CL, Burel C, Williams JM. Cost efficient synthesis of amides from oximes with indium or zinc catalysts. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.048] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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1487
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Bertrand S, Duval O, Hélesbeux JJ, Larcher G, Richomme P. Synthesis of the trans-fusarinine scaffold. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.02.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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1488
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Yang XD, Zeng XH, Zhao YH, Wang XQ, Pan ZQ, Li L, Zhang HB. Silica Gel-Mediated Amide Bond Formation: An Environmentally Benign Method for Liquid-Phase Synthesis and Cytotoxic Activities of Amides. ACTA ACUST UNITED AC 2010; 12:307-10. [DOI: 10.1021/cc900135f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao-Dong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Xiang-Hui Zeng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Yuan-Hong Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Xue-Quan Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Zhi-Qiang Pan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Liang Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Hong-Bin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
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1489
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Zhang Y, Chen C, Ghosh SC, Li Y, Hong SH. Well-Defined N-Heterocyclic Carbene Based Ruthenium Catalysts for Direct Amide Synthesis from Alcohols and Amines. Organometallics 2010. [DOI: 10.1021/om901020h] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yao Zhang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Cheng Chen
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Subhash Chandra Ghosh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Soon Hyeok Hong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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1490
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Rao Y, Li X, Danishefsky SJ. Thio FCMA intermediates as strong acyl donors: a general solution to the formation of complex amide bonds. J Am Chem Soc 2010; 131:12924-6. [PMID: 19697932 DOI: 10.1021/ja906005j] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel methodology for the formation of amide bonds under neutral conditions is described. Evidence is presented that the active acyl donors are thio FCMA intermediates, generated from the reactions of thioacids with isonitriles.
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Affiliation(s)
- Yu Rao
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10065, USA
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1491
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1492
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Eckes F, Bulach V, Guenet A, Strassert CA, Cola LD, Hosseini MW. Sensitization of the NIR emission of Nd(iii) by the α4 atropoisomer of a meso-tetraphenyl porphyrin bearing four 8-hydroxyquinolinylamide chelates. Chem Commun (Camb) 2010; 46:619-21. [DOI: 10.1039/b920676k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1493
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Clavé G, Volland H, Flaender M, Gasparutto D, Romieu A, Renard PY. A universal and ready-to-use heterotrifunctional cross-linking reagent for facile synthetic access to sophisticated bioconjugates. Org Biomol Chem 2010; 8:4329-45. [DOI: 10.1039/c0ob00133c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1494
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Figlus M, Tarruella AC, Messer A, Sollis SL, Hartley RC. Low molecular weight MPEG-assisted organic synthesis. Chem Commun (Camb) 2010; 46:4405-7. [DOI: 10.1039/c0cc00415d] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1495
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1496
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Fernández-Moreira V, Song B, Sivagnanam V, Chauvin AS, Vandevyver CDB, Gijs M, Hemmilä I, Lehr HA, Bünzli JCG. Bioconjugated lanthanide luminescent helicates as multilabels for lab-on-a-chip detection of cancer biomarkers. Analyst 2010; 135:42-52. [DOI: 10.1039/b922124g] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1497
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Sureshbabu VV, Lalithamba HS, Narendra N, Hemantha HP. New and simple synthesis of acid azides, ureas and carbamates from carboxylic acids: application of peptide coupling agents EDC and HBTU. Org Biomol Chem 2010; 8:835-40. [DOI: 10.1039/b920290k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1498
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Charville H, Jackson D, Hodges G, Whiting A. The thermal and boron-catalysed direct amide formation reactions: mechanistically understudied yet important processes. Chem Commun (Camb) 2010; 46:1813-23. [DOI: 10.1039/b923093a] [Citation(s) in RCA: 188] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review provides a summary and discussion of work reported to date regarding the mechanistic aspects of the catalysed and uncatalysed direct amide formation reaction.
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Affiliation(s)
- Hayley Charville
- Department of Chemistry
- Science Laboratories
- Durham University
- Durham
- UK
| | | | - George Hodges
- Syngenta
- Jealott's Hill International Research Centre
- Berkshire
- UK
| | - Andrew Whiting
- Department of Chemistry
- Science Laboratories
- Durham University
- Durham
- UK
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1499
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Clavé G, Ronco C, Boutal H, Kreich N, Volland H, Franck X, Romieu A, Renard PY. Facile and rapid access to linear and truncated microcystin analogues for the implementation of immunoassays. Org Biomol Chem 2009; 8:676-90. [PMID: 20090987 DOI: 10.1039/b920193a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of simplified microcystin-LR analogues based on Adda [(2S,3S,8S,9S,4E,6E)-3-amino-9-methoxy-2,6,8-trimethyl-10-phenyldecadienoic acid] or its corresponding aldol precursor linked to a polypeptide moiety have been synthesised and assessed for their binding affinity by the monoclonal antibody mAb MC159, an anti-microcystin-LR mAb recently selected by us for the detection of microcystins through various immunoassay formats. Some modifications have been brought to the enantiospecific synthesis of N-Boc-Adda developed by Pearson et al. (Org. Lett., 2000, 2, 2901) which enabled us to access in an economical and time-saving manner a small library of MC-LR linear analogues. Among which Adda was chosen to synthesise, as an illustrative example, a fluorescent probe derived from this beta-amino acid. This probe was subsequently solid-phase immobilised by means of oxime ligation in order to lead to biochips suitable for microcystin detection through the SPIT-FRI method.
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Affiliation(s)
- G Clavé
- Equipe de Chimie Bio-Organique, COBRA-CNRS UMR 6014 & FR 3038, rue Lucien Tesnière, 76131 Mont-Saint-Aignan, France
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1500
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Ghosh SC, Muthaiah S, Zhang Y, Xu X, Hong SH. Direct Amide Synthesis from Alcohols and Amines by Phosphine-Free Ruthenium Catalyst Systems. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900482] [Citation(s) in RCA: 204] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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