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Recent advances in transition-metal-free C–H functionalization of imidazo[1,2-a]pyridines. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Gunaganti N, Kharbanda A, Lakkaniga NR, Zhang L, Cooper R, Li HY, Frett B. Catalyst free, C-3 functionalization of imidazo[1,2-a]pyridines to rapidly access new chemical space for drug discovery efforts. Chem Commun (Camb) 2018; 54:12954-12957. [PMID: 30375586 DOI: 10.1039/c8cc07063f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Multicomponent reactions (MCRs) are robust tools for the rapid synthesis of complex, small molecule libraries for use in drug discovery and development. By utilizing MCR chemistry, we developed a protocol to functionalize the C-3 position of imidazo[1,2-a]pyridine through a three component, decarboxylation reaction involving imidazo[1,2-a]pyridine, glyoxalic acid, and boronic acid.
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Affiliation(s)
- Naresh Gunaganti
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, 72205, USA.
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3
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Das A, Watanabe K, Morimoto H, Ohshima T. Boronic Acid Accelerated Three-Component Reaction for the Synthesis of α-Sulfanyl-Substituted Indole-3-acetic Acids. Org Lett 2017; 19:5794-5797. [DOI: 10.1021/acs.orglett.7b02727] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Amrita Das
- Graduate School of Pharmaceutical
Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kenji Watanabe
- Graduate School of Pharmaceutical
Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hiroyuki Morimoto
- Graduate School of Pharmaceutical
Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical
Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Nguyen TN, Nguyen TS, May JA. Brønsted Acid Catalyzed Homoconjugate Addition of Organotrifluoroborates to Arylated Cyclopropyl Ketones. Org Lett 2016; 18:3786-9. [DOI: 10.1021/acs.orglett.6b01795] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Truong N. Nguyen
- Department
of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building
Room 112, Houston, Texas 77204-5003, United States
| | - Thien S. Nguyen
- Department
of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building
Room 112, Houston, Texas 77204-5003, United States
| | - Jeremy A. May
- Department
of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building
Room 112, Houston, Texas 77204-5003, United States
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Reddy BN, Rani CR, Reddy SM, Pathak M. An efficient and green La(OTf)3 catalyzed Petasis borono–Mannich reaction for the synthesis of tertiary amines. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2551-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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An expeditious approach to access 2-arylimidazo[1,2-a]pyridin-3-ol from 2-amino pyridine through a novel Petasis based cascade reaction. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chen L, Zhou J. A Highly Efficient Friedel–Crafts Reaction of Tertiary α‐Hydroxyesters or α‐Hydroxyketones to α‐Quaternary Esters or Ketones. Chem Asian J 2012; 7:2510-5. [DOI: 10.1002/asia.201200693] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Long Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663N, Zhongshan Road, Shanghai 200062 (China), Fax: (+86) 21‐6223‐4560
| | - Jian Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663N, Zhongshan Road, Shanghai 200062 (China), Fax: (+86) 21‐6223‐4560
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Affiliation(s)
- Morteza Shiri
- Department of Chemistry, Faculty of Science, Alzahra University, Vanak, Tehran, Iran.
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Sharma SK, Mandadapu AK, Kumar B, Kundu B. Synthesis of Iodo-Indoloazepinones in an Iodine-Mediated Three-Component Domino Reaction via a Regioselective 7-endo-dig Iodo-Cyclization PathwayCDRI Communication No. 8094. J Org Chem 2011; 76:6798-805. [DOI: 10.1021/jo201228t] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Sudhir K. Sharma
- Medicinal & Process Chemistry Division and ‡Sophisticated Analytical and Instrument Facility, Central Drug Research Institute, CSIR, Lucknow 226001, India
| | - Anil K. Mandadapu
- Medicinal & Process Chemistry Division and ‡Sophisticated Analytical and Instrument Facility, Central Drug Research Institute, CSIR, Lucknow 226001, India
| | - Brijesh Kumar
- Medicinal & Process Chemistry Division and ‡Sophisticated Analytical and Instrument Facility, Central Drug Research Institute, CSIR, Lucknow 226001, India
| | - Bijoy Kundu
- Medicinal & Process Chemistry Division and ‡Sophisticated Analytical and Instrument Facility, Central Drug Research Institute, CSIR, Lucknow 226001, India
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Candeias NR, Montalbano F, Cal PMSD, Gois PMP. Boronic acids and esters in the Petasis-borono Mannich multicomponent reaction. Chem Rev 2011; 110:6169-93. [PMID: 20677749 DOI: 10.1021/cr100108k] [Citation(s) in RCA: 386] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nuno R Candeias
- iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
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Neogi S, Roy A, Naskar D. One-pot synthesis of new substituted 1,2,3,4-tetrahydrocarbazoles via Petasis reaction. ACTA ACUST UNITED AC 2010; 12:617-29. [PMID: 20586482 DOI: 10.1021/cc900194k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The one-pot synthesis of a new substituted 1,2,3,4-tetrahydrocarbazoles has been described via Petasis reactions. These tetrahydrocarbazoles exhibits various medicinal importance and might be suitable for elaboration into larger peptides at carboxy termini. The scope and limitations of this method have been examined.
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Affiliation(s)
- Subhasish Neogi
- Syngene International Ltd, Biocon Park, Plot No. 2 & 3, Bommasandra IV Phase, Jigani Link Road, Bangalore 560 099, India
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Liu Y, Wang L, Sui Y, Yu J. Solvent-free Synthesis of Alkylaminophenols via Petasis Boronic Mannich Reaction in One Pot without Catalysts. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090340] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Palmieri A, Petrini M, Shaikh RR. Synthesis of 3-substituted indoles via reactive alkylideneindolenine intermediates. Org Biomol Chem 2009; 8:1259-70. [PMID: 20204191 DOI: 10.1039/b919891a] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elimination of suitable leaving groups from 3-substituted indoles under basic or acidic conditions readily provides alkylideneindolenine intermediates that may react with a large variety of nucleophilic reagents. This article highlights some recent developments of this synthetic approach for the preparation of functionalized indole derivatives.
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Affiliation(s)
- Alessandro Palmieri
- Dipartimento di Scienze Chimiche, Università di Camerino, via S.Agostino, 1, I-62032, Camerino, Italy
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Neogi S, Roy A, Naskar D. One-Pot Synthesis of New Fused 4,5-Bridged 1,2,5-Triazepine-3,6-diones, 1,2,5-Triazepine-3,7-diones Heterocycles by Petasis Reaction. ACTA ACUST UNITED AC 2009; 12:75-83. [DOI: 10.1021/cc900092x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Subhasish Neogi
- Syngene International Ltd, Biocon Park, Plot No. 2 & 3, Bommasandra IV Phase, Jigani Link Road, Bangalore 560 099, India
| | - Amrita Roy
- Syngene International Ltd, Biocon Park, Plot No. 2 & 3, Bommasandra IV Phase, Jigani Link Road, Bangalore 560 099, India
| | - Dinabandhu Naskar
- Syngene International Ltd, Biocon Park, Plot No. 2 & 3, Bommasandra IV Phase, Jigani Link Road, Bangalore 560 099, India
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