351
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Vázquez E, Prato M. Carbon nanotubes and microwaves: interactions, responses, and applications. ACS NANO 2009; 3:3819-24. [PMID: 20025299 DOI: 10.1021/nn901604j] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The interaction of microwaves with carbon nanotubes (CNTs) is an interesting topic for a variety of potential applications. Microwaves have been used for the purification of CNTs and for their chemical functionalization, providing a technique for simple, green, and large-scale protocols. In addition, the selective destruction of metallic CNTs under microwave irradiation could potentially result in a batch of semiconducting-only nanotubes. As an innovative application, the combination of microwaves with well-aligned CNTs could produce a new illumination technology. Moreover, the microwave absorbing properties of CNTs and their different behavior from typical organic compounds may open the door to the preparation of a wide range of new materials useful in many fields. A few examples of practical applications include electromagnetic interference for protecting the environment from radiation and microwave hyperthermia for cancer treatment as well as other medical therapies requiring precise heating of biological tissues.
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Affiliation(s)
- Ester Vázquez
- Departamento de Quimica Organica, Universidad de Castilla-La Mancha, Campus Universitario, 13071 Ciudad Real, Spain.
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352
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Banerjee J, Hanson AJ, Muhonen WW, Shabb JB, Mallik S. Microwave-assisted synthesis of triple-helical, collagen-mimetic lipopeptides. Nat Protoc 2009; 5:39-50. [PMID: 20057380 DOI: 10.1038/nprot.2009.195] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Collagen-mimetic peptides and lipopeptides are widely used as substrates for matrix degrading enzymes, as new biomaterials for tissue engineering, as drug delivery systems and so on. However, the preparation and subsequent purification of these peptides and their fatty-acid conjugates are really challenging. Herein, we report a rapid microwave-assisted, solid-phase synthetic protocol to prepare the fatty-acid conjugated, triple-helical peptides containing the cleavage site for the enzyme matrix metalloproteinase-9 (MMP-9). We employed a PEG-based resin as the solid support and the amino acids were protected with Fmoc- and tert-butyl groups. The amino acids were coupled at 50 degrees C (25 W of microwave power) for 5 min. The deprotection reactions were carried out at 75 degrees C (35 W of microwave power) for 3 min. Using this protocol, a peptide containing 23 amino acids was synthesized and then conjugated to stearic acid in 14 h.
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Affiliation(s)
- Jayati Banerjee
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota, USA
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353
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Xu X, Xu X, Li H, Xie X, Li Y. Iron-Catalyzed, Microwave-Promoted, One-Pot Synthesis of 9-Substituted Xanthenes by a Cascade Benzylation−Cyclization Process. Org Lett 2009; 12:100-3. [DOI: 10.1021/ol902489a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaobing Xu
- Institute of Medicinal Chemistry, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Xiaolei Xu
- Institute of Medicinal Chemistry, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Hongfeng Li
- Institute of Medicinal Chemistry, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Xin Xie
- Institute of Medicinal Chemistry, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Yanzhong Li
- Institute of Medicinal Chemistry, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
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354
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Possidonio S, Fidale LC, El Seoud OA. Microwave-assisted derivatization of cellulose in an ionic liquid: An efficient, expedient synthesis of simple and mixed carboxylic esters. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23770] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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355
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Guillena G, Ramón DJ, Yus M. Hydrogen Autotransfer in the N-Alkylation of Amines and Related Compounds using Alcohols and Amines as Electrophiles. Chem Rev 2009; 110:1611-41. [DOI: 10.1021/cr9002159] [Citation(s) in RCA: 984] [Impact Index Per Article: 65.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gabriela Guillena
- Instituto de Síntesis Orgánica and Departamento de Química Orgánica, Universidad de Alicante, Facultad de Ciencias, Apartado 99, E-03080 Alicante, Spain
| | - Diego J. Ramón
- Instituto de Síntesis Orgánica and Departamento de Química Orgánica, Universidad de Alicante, Facultad de Ciencias, Apartado 99, E-03080 Alicante, Spain
| | - Miguel Yus
- Instituto de Síntesis Orgánica and Departamento de Química Orgánica, Universidad de Alicante, Facultad de Ciencias, Apartado 99, E-03080 Alicante, Spain
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356
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357
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Maiti B, Chanda K, Sun CM. Traceless Synthesis of Hydantoin Fused Tetrahydro-β-carboline on Ionic Liquid Support in Green Media. Org Lett 2009; 11:4826-9. [DOI: 10.1021/ol901857h] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Barnali Maiti
- Laboratory of Combinatorial Drug Discovery, Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300-10, Taiwan
| | - Kaushik Chanda
- Laboratory of Combinatorial Drug Discovery, Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300-10, Taiwan
| | - Chung-Ming Sun
- Laboratory of Combinatorial Drug Discovery, Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300-10, Taiwan
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358
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An Efficient, Microwave-Assisted, One-Pot Synthesis of Indoles Under Sonogashira Conditions. Tetrahedron 2009; 65:8908-8915. [PMID: 20160894 DOI: 10.1016/j.tet.2009.07.075] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A microwave-assisted, one-pot, three-component coupling reaction for the synthesis of indoles has been developed. The reaction is carried out in two steps under standard Sonogashira coupling conditions from an N-substituted/N,N-disubstituted 2-iodoaniline and a terminal alkyne, followed by the addition of acetonitrile and an aryl iodide. A variety of polysubstituted indoles have been prepared in moderate to excellent yields using the present method.
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359
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Roy D, Ullah A, Sumerlin BS. Rapid Block Copolymer Synthesis by Microwave-Assisted RAFT Polymerization. Macromolecules 2009. [DOI: 10.1021/ma901471k] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Debashish Roy
- Department of Chemistry, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275-0314
| | - Aman Ullah
- Department of Chemistry, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275-0314
- Dipartimento di Chimica e Chimica Industriale, Università di Genova and INSTM NIPLAB Centre, via Dodecaneso, 31, 16146 Genova, Italy
| | - Brent S. Sumerlin
- Department of Chemistry, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275-0314
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360
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Awasthi S, Narasimha Rao A, Ganesan K. An environmental-benign approach for the synthesis of alkylthiocyanates. J Sulphur Chem 2009. [DOI: 10.1080/17415990902894315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Suman Awasthi
- a Synthetic Chemistry Division, Defence Research and Development Establishment , Jhansi Road, Gwalior, 474002, India
| | - Ambati Narasimha Rao
- a Synthetic Chemistry Division, Defence Research and Development Establishment , Jhansi Road, Gwalior, 474002, India
| | - Kumaran Ganesan
- a Synthetic Chemistry Division, Defence Research and Development Establishment , Jhansi Road, Gwalior, 474002, India
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361
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Martins MAP, Frizzo CP, Moreira DN, Buriol L, Machado P. Solvent-Free Heterocyclic Synthesis. Chem Rev 2009; 109:4140-82. [DOI: 10.1021/cr9001098] [Citation(s) in RCA: 518] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marcos A. P. Martins
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Clarissa P. Frizzo
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Dayse N. Moreira
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Lilian Buriol
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Pablo Machado
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
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362
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Hren J, Požgan F, Bunič A, Parvulescu VI, Polanc S, Kočevar M. An expeditious synthesis of β-pyrimidyl-α,β-didehydro-α-amino acid derivatives and pyrano[2,3-d]pyrimidines using microwave-assisted conditions. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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363
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Facile and highly efficient method for the C-alkylation of 2-hydroxy-1,4-naphthoquinone to nitroalkenes under catalyst-free ‘on water’ conditions. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.06.107] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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364
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Habib PM, Kavala V, Raju BR, Kuo CW, Huang WC, Yao CF. “On-Water”-PromotedC-Alkylation of Indoles with 2-Aryl-3-nitro-2H-chromenes under Catalyst-Free Conditions. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900207] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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365
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Doherty S, Smyth CH, Harrington RW, Clegg W. Synthesis of Biaryl Diphosphines via a Stepwise Regioselective Double Diels−Alder Cycloaddition−Elimination Sequence: Efficient Ligands for the Palladium-Catalyzed Amination of Aromatic Bromides. Organometallics 2009. [DOI: 10.1021/om9004862] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Simon Doherty
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - Catherine H. Smyth
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - Ross W. Harrington
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - William Clegg
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
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366
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SHI F, ZHANG G, ZHOU D, MA N, ZHANG Y, CHEN R, TU S. An Unexpected Green and Facile Synthesis of 2,6-Diaryl-4-styrylpyridines via Multi-component Reactions in Microwave-assisted Solvent-free Conditions. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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367
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Cadierno V, Francos J, Gimeno J. Microwave-assisted InCl3-catalyzed Meyer–Schuster rearrangement of propargylic aryl carbinols in aqueous media: a green approach to α,β-unsaturated carbonyl compounds. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.06.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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368
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A microwave-assisted, green procedure for the synthesis of N-aryl sulfonyl and N-aryl pyrroles. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.06.079] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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369
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Dolka C, Hecke KV, Meervelt LV, Tsoungas PG, Eycken EVVD, Varvounis G. Novel Thermal and Microwave-Assisted Facile Route to Naphthalen-2(1H)-ones via an Oxidative Alkoxylation-Ring-Opening Protocol. Org Lett 2009; 11:2964-7. [DOI: 10.1021/ol9008574] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chrysanthi Dolka
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece, Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium, Biomolecular Architecture, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium, and Ministry of Development, Department of Development and Technology, Messogion 14-16, 115 10 Athens, Greece
| | - Kristof Van Hecke
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece, Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium, Biomolecular Architecture, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium, and Ministry of Development, Department of Development and Technology, Messogion 14-16, 115 10 Athens, Greece
| | - Luc Van Meervelt
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece, Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium, Biomolecular Architecture, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium, and Ministry of Development, Department of Development and Technology, Messogion 14-16, 115 10 Athens, Greece
| | - Petros G. Tsoungas
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece, Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium, Biomolecular Architecture, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium, and Ministry of Development, Department of Development and Technology, Messogion 14-16, 115 10 Athens, Greece
| | - Erik V. Van der Eycken
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece, Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium, Biomolecular Architecture, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium, and Ministry of Development, Department of Development and Technology, Messogion 14-16, 115 10 Athens, Greece
| | - George Varvounis
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece, Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium, Biomolecular Architecture, Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium, and Ministry of Development, Department of Development and Technology, Messogion 14-16, 115 10 Athens, Greece
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370
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Martínez-Palou R. Microwave-assisted synthesis using ionic liquids. Mol Divers 2009; 14:3-25. [PMID: 19507045 DOI: 10.1007/s11030-009-9159-3] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Accepted: 05/09/2009] [Indexed: 11/29/2022]
Abstract
The research and application of green chemistry principles have led to the development of cleaner processes. In this sense, during the present century an ever-growing number of studies have been published describing the use of ionic liquids (ILs) as solvents, catalysts, or templates to develop more environmentally friendly and efficient chemical transformations for their use in both academia and industry. The conjugation of ILs and microwave irradiation as a non-conventional heating source has shown evident advantages when compared to conventional synthetic procedures for the generation of fast, efficient, and environmental friendly synthetic methodologies. This review focuses on the advances in the use of ILs in organic, polymers and materials syntheses under MW irradiation conditions.
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Affiliation(s)
- Rafael Martínez-Palou
- Programa de Ingeniería Molecular, Instituto Mexicano del Petróleo, Eje Central L. Cárdenas 152, 07730, Mexico, DF, Mexico.
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371
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De Paolis O, Teixeira L, Török B. Synthesis of quinolines by a solid acid-catalyzed microwave-assisted domino cyclization–aromatization approach. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.208] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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372
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Chighine A, Crosignani S, Arnal MC, Bradley M, Linclau B. Microwave-Assisted Ester Formation Using O-Alkylisoureas: A Convenient Method for the Synthesis of Esters with Inversion of Configuration. J Org Chem 2009; 74:4753-62. [DOI: 10.1021/jo900476y] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alessandra Chighine
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Stefano Crosignani
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Marie-Claire Arnal
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Mark Bradley
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Bruno Linclau
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
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373
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Dolzhenko AV, Pastorin G, Dolzhenko AV, Chui WK. An aqueous medium synthesis and tautomerism study of 3(5)-amino-1,2,4-triazoles. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.172] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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374
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A facile and regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles using click chemistry. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.107] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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375
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Kappe CO, Dallinger D. Controlled microwave heating in modern organic synthesis: highlights from the 2004–2008 literature. Mol Divers 2009; 13:71-193. [PMID: 19381851 DOI: 10.1007/s11030-009-9138-8] [Citation(s) in RCA: 292] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Accepted: 02/27/2009] [Indexed: 01/25/2023]
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376
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Mallakpour S, Rafiee Z. Expeditious synthesis of novel aromatic polyamides from 5-[3-phenyl-2-(9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboximido)propanoylamino]isophthalic acid and various diamines using microwave-assisted polycondensation. REACT FUNCT POLYM 2009. [DOI: 10.1016/j.reactfunctpolym.2009.01.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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377
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A direct synthesis of β-carbolines via a three-step one-pot domino approach with a bifunctional Pd/C/K-10 catalyst. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.01.143] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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378
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Polshettiwar V, Baruwati B, Varma RS. Self-assembly of metal oxides into three-dimensional nanostructures: synthesis and application in catalysis. ACS NANO 2009; 3:728-36. [PMID: 19209927 DOI: 10.1021/nn800903p] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Nanostructured metal (Fe, Co, Mn, Cr, Mo) oxides were fabricated under microwave irradiation conditions in pure water without using any reducing or capping reagent. The metal oxides self-assembled into octahedra, spheres, triangular rods, pine, and hexagonal snowflake-like three-dimensional morphologies. Pine-structured nano-iron oxides were studied as a novel support for various catalytic organic transformations.
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Affiliation(s)
- Vivek Polshettiwar
- Sustainable Technology Division, National Risk Management Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio 45268, USA.
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379
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Damm M, Kappe CO. High-Throughput Experimentation Platform: Parallel Microwave Chemistry in HPLC/GC Vials. ACTA ACUST UNITED AC 2009; 11:460-8. [DOI: 10.1021/cc900007w] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Markus Damm
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - C. Oliver Kappe
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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380
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Nguyen Van Buu O, Aupoix A, Vo-Thanh G. Synthesis of novel chiral imidazolium-based ionic liquids derived from isosorbide and their applications in asymmetric aza Diels–Alder reaction. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.01.055] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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381
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Magnetically recoverable supported ruthenium catalyst for hydrogenation of alkynes and transfer hydrogenation of carbonyl compounds. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.01.014] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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382
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Kumar D, Kumar. N. M, Rao VS. A Facile and Expeditious Synthesis of Cryptosanguinolentines. CHEM LETT 2009. [DOI: 10.1246/cl.2009.156] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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383
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Nanoparticle-Supported and Magnetically Recoverable Ruthenium Hydroxide Catalyst: Efficient Hydration of Nitriles to Amides in Aqueous Medium. Chemistry 2009; 15:1582-6. [DOI: 10.1002/chem.200802264] [Citation(s) in RCA: 228] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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384
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Van Buu ON, Aupoix A, Hong NDT, Vo-Thanh G. Chiral ionic liquids derived from isosorbide: synthesis, properties and applications in asymmetric synthesis. NEW J CHEM 2009. [DOI: 10.1039/b902956g] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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385
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Polshettiwar V, Baruwati B, Varma RS. Magnetic nanoparticle-supported glutathione: a conceptually sustainable organocatalyst. Chem Commun (Camb) 2009:1837-9. [DOI: 10.1039/b900784a] [Citation(s) in RCA: 191] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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386
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Polshettiwar V, Varma RS. Nanoparticle-supported and magnetically recoverable palladium (Pd) catalyst: a selective and sustainable oxidation protocol with high turnover number. Org Biomol Chem 2009; 7:37-40. [DOI: 10.1039/b817669h] [Citation(s) in RCA: 241] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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387
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Hoogenboom R, Wilms TFA, Erdmenger T, Schubert US. Microwave-Assisted Chemistry: a Closer Look at Heating Efficiency. Aust J Chem 2009. [DOI: 10.1071/ch08503] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Nowadays, microwave heating has evolved into a common tool for chemists based on its numerous advantages over conventional conductive heating. Surprisingly, the efficiency of microwave-assisted heating is still rather unexplored. In this contribution, we report our investigations concerning the heating efficiency of a variety of solvents including polar and apolar substances. Moreover, the effects of adding salt or passive heating elements on the microwave heating efficiency will be addressed. Finally, the heating efficiency of demineralized water is discussed at different volumes and with different microwave power levels in both monomode and multimode microwave synthesizers, demonstrating maximum average heating efficiencies of 10% for small-scale vessels (5 mL), 20% for medium-scale (50 mL), and 30% for large-scale microwave heating (400 mL).
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388
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Polshettiwar V, Nadagouda MN, Varma RS. Microwave-Assisted Chemistry: a Rapid and Sustainable Route to Synthesis of Organics and Nanomaterials. Aust J Chem 2009. [DOI: 10.1071/ch08404] [Citation(s) in RCA: 154] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The use of emerging microwave (MW)-assisted chemistry techniques in conjunction with benign reaction media is dramatically reducing chemical waste and reaction times in several organic syntheses and chemical transformations. The present review summarizes recent developments in MW-assisted synthesis, name reactions and organic transformations, and rapid generation of nanoparticles with uniform size distribution. Greener protocols have been developed for the synthesis of various bio-active heterocycles, namely 1,3,4-oxadiazoles, 1,3,4-thiadiazoles, 1,3-dioxanes, pyrazoles, hydrazones and 3,4-dihydropyrimidin-2(1H)-ones, which proceed under the influence of microwaves and using eco-friendly conditions. These high-yielding methods were catalyzed efficiently by solid-supported Nafion NR50 under solvent-free conditions and polystyrene sulfonic acid in aqueous media. The eco-friendly nucleophilic substitution chemistry in water to generate cyclic amines via double N-alkylation of primary amines or hydrazines by dihalides or tosylates enables the greener synthesis of a range of pharmaceutically active heterocycles. Similarly, efficient MW synthesis of various azides, thiocyanates, and sulfones in aqueous medium occurs wherein nucleophilic substitution reaction takes place in the absence of a phase-transfer catalyst. Bulk and shape-controlled synthesis of noble nanostructures via MW-assisted spontaneous reduction of noble metal salts using α-d-glucose, sucrose, and maltose is described. MW method also accomplishes the cross-linking reaction of poly(vinyl alcohol) with metallic systems such as Pt, Cu, and In; bimetallic systems, namely Pt–In, Ag–Pt, Pt–Fe, Cu–Pd, Pt–Pd, and Pd–Fe; and single-walled nanotubes, multi-walled nanotubes, and buckminsterfullerenes (C-60). The strategy is extended to the formation of biodegradable carboxymethyl cellulose (CMC) composite films with noble nanometals; such metal decoration and alignment of carbon nanotubes in CMC is possible using a MW approach that also enables the shape-controlled bulk synthesis of Ag and Fe nanorods in poly(ethylene glycol).
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389
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Nadagouda MN, Varma RS. Risk Reduction Via Greener Synthesis of Noble Metal Nanostructures and Nanocomposites. NANOMATERIALS: RISKS AND BENEFITS 2009. [DOI: 10.1007/978-1-4020-9491-0_15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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390
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Gising J, Örtqvist P, Sandström A, Larhed M. A straightforward microwave method for rapid synthesis of N-1, C-6 functionalized 3,5-dichloro-2(1H)-pyrazinones. Org Biomol Chem 2009; 7:2809-15. [DOI: 10.1039/b905501k] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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391
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Rubio N, Herrero MA, Meneghetti M, Díaz-Ortiz Á, Schiavon M, Prato M, Vázquez E. Efficient functionalization of carbon nanohorns via microwave irradiation. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b900776h] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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392
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Mayer CD, Kehrel M, Bracher F. AN IMPROVED APPROACH TON-SUBSTITUTED MALEIMIDES AND PHTHALIMIDES BY MICROWAVE-PROMOTED MITSUNOBU REACTION. ORG PREP PROCED INT 2008. [DOI: 10.1080/00304940809458124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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393
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Mosaddegh E, Islami MR. SYNTHESIS OF ARYL 14H-DIBENZO[A,J]XANTHENES USING ZIRCONIUM(IV) OXIDE CHLORIDE AS A CATALYST. ORG PREP PROCED INT 2008. [DOI: 10.1080/00304940809458126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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394
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Maraš N, Polanc S, Kočevar M. Microwave-assisted methylation of phenols with tetramethylammonium chloride in the presence of K2CO3 or Cs2CO3. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.10.024] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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395
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Habib PM, Kavala V, Kuo CW, Yao CF. Catalyst-free aqueous-mediated conjugative addition of indoles to β-nitrostyrenes. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.109] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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396
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Kumar D, Patel G, Mishra BG, Varma RS. Eco-friendly polyethylene glycol promoted Michael addition reactions of α,β-unsaturated carbonyl compounds. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.116] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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397
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Frayne GL, Green GM. Investigation of the N-arylation of various substituted indoles using microwave-assisted technology. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.10.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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398
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Ring-fused aminals: catalyst and solvent-free microwave-assisted α-amination of nitrogen heterocycles. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.166] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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399
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Senra J, Malta LF, Souza AL, Aguiar LC, Antunes O. Palladium on Calcium Carbonate Combined to 2-Hydroxypropyl-α/β-cyclodextrins: A Selective Catalytic System for Aqueous Heck Coupling and Hydroarylation. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800472] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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400
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Orrling KM, Wu X, Russo F, Larhed M. Fast, acid-free, and selective lactamization of lactones in ionic liquids. J Org Chem 2008; 73:8627-30. [PMID: 18826282 DOI: 10.1021/jo8015264] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A fast and acid-free one-pot 0.2-30 mmol microwave methodology for direct ionic liquid-mediated preparation of lactams from lactones and primary amines has been developed. The protocol was investigated with a wide range of primary amines and a handful of lactones, including substrates with acid-sensitive substituents. Both gamma-lactams and delta-lactams were, despite the complete absence of a Brønsted acid, obtained in useful to excellent yields after only 35 min of microwave processing.
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Affiliation(s)
- Kristina M Orrling
- Organic Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
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