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Day A, Jenkins TC, Kischkewitz M, Christensen KE, Poole DL, Donohoe TJ. Metal and Activating Group Free C-4 Alkylation of Isoquinolines via a Temporary Dearomatization Strategy. Org Lett 2023; 25:614-618. [PMID: 36688518 PMCID: PMC9903316 DOI: 10.1021/acs.orglett.2c04149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A simple method for the C-4 alkylation of isoquinolines is described using benzoic acid as a nucleophilic reagent and vinyl ketones as an electrophile. The reaction shows tolerance for substitution at C-3, and C-5-C-8 positions as well as allowing some variation of the vinyl ketone electrophiles. The products contain a carbonyl that can act as a synthetic handle for further manipulations giving esters, amines, or simple alkyl products.
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Affiliation(s)
- Aaron
J. Day
- Department
of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road,
Oxford, OX1 3TA, United
Kingdom
| | - Timothy C. Jenkins
- Department
of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road,
Oxford, OX1 3TA, United
Kingdom
| | - Marvin Kischkewitz
- Department
of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road,
Oxford, OX1 3TA, United
Kingdom
| | - Kirsten E. Christensen
- Department
of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road,
Oxford, OX1 3TA, United
Kingdom
| | - Darren L. Poole
- Discovery
High-Throughput Chemistry, Medicinal Chemistry, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - Timothy J. Donohoe
- Department
of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road,
Oxford, OX1 3TA, United
Kingdom,E-mail:
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2
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Ruscoe RE, Callingham M, Baker JA, Korkis SE, Lam HW. Iridium-catalyzed 1,5-(aryl)aminomethylation of 1,3-enynes by alkenyl-to-allyl 1,4-iridium(i) migration. Chem Commun (Camb) 2019; 55:838-841. [DOI: 10.1039/c8cc09238a] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel multicomponent coupling reaction involving the iridium-catalyzed 1,5-difunctionalization of 1,3-enynes with arylboronic acids and triazinanes is described.
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Affiliation(s)
- Rebecca E. Ruscoe
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- University of Nottingham
- Nottingham
- UK
- School of Chemistry
| | - Michael Callingham
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- University of Nottingham
- Nottingham
- UK
- School of Chemistry
| | - Joshua A. Baker
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- University of Nottingham
- Nottingham
- UK
- School of Chemistry
| | - Stamatis E. Korkis
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- University of Nottingham
- Nottingham
- UK
- School of Chemistry
| | - Hon Wai Lam
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry
- University of Nottingham
- Nottingham
- UK
- School of Chemistry
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3
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Fosu SC, Hambira CM, Chen AD, Fuchs JR, Nagib DA. Site-Selective C-H Functionalization of (Hetero)Arenes via Transient, Non-Symmetric Iodanes. Chem 2018; 5:417-428. [PMID: 31032461 DOI: 10.1016/j.chempr.2018.11.007] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A strategy for C-H functionalization of arenes and heteroarenes has been developed to allow site-selective incorporation of various anions, including Cl, Br, OMs, OTs, and OTf. This approach is enabled by in situ generation of reactive, non-symmetric iodanes by combining anions and bench-stable PhI(OAc)2. The utility of this mechanism is demonstrated via para-selective chlorination of medicinally relevant arenes, as well as site-selective C-H chlorination of heteroarenes. Spectroscopic, computational, and competition experiments describe the unique nature, reactivity, and selectivity of these transient, unsymmetrical iodanes.
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Affiliation(s)
- Stacy C Fosu
- The Ohio State University, Department of Chemistry and Biochemistry, Columbus, OH 43210, United States
| | - Chido M Hambira
- The Ohio State University, Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Columbus, OH 43210, United States
| | - Andrew D Chen
- The Ohio State University, Department of Chemistry and Biochemistry, Columbus, OH 43210, United States
| | - James R Fuchs
- The Ohio State University, Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Columbus, OH 43210, United States
| | - David A Nagib
- The Ohio State University, Department of Chemistry and Biochemistry, Columbus, OH 43210, United States.,Lead contact
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4
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Sau P, Rakshit A, Modi A, Behera A, Patel BK. Three Sequential C–N Bond Formations: tert-Butyl Nitrite as a N1 Synthon in a Three Component Reaction Leading to Imidazo[1,2-a]quinolines and Imidazo[2,1-a]isoquinolines. J Org Chem 2018; 83:1056-1064. [DOI: 10.1021/acs.joc.7b02815] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Prasenjit Sau
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Amitava Rakshit
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anju Modi
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Ahalya Behera
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Bhisma K. Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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Chen YH, Lai CH, Sorra K, Chuang TH. Protecting-Group-Free Synthesis of 1-Phenylisoquinolin-4-ols: Thermal Cyclization of Methyl 2-[(Diphenylmethylidene)amino]acetates. J Org Chem 2017; 82:12849-12856. [PMID: 29065266 DOI: 10.1021/acs.joc.7b02240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A protecting-group-free synthetic approach to 1-phenylisoquinolin-4-ols was developed by the intramolecular thermal cyclization of methyl 2-[(diphenylmethylidene)amino]acetates. R1 and R2 substituents were found to affect the required reaction temperatures, time, and yields of the cyclized products. The reactivity of the Schiff bases increased upon introduction of α-benzoyl and α-ester groups (R2). The cyclization yield also depended on the position of the R1 substituents on the phenyl groups.
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Affiliation(s)
- Ying-Hui Chen
- School of Pharmacy, China Medical University , Taichung 40402, Taiwan
| | - Chin-Hung Lai
- Department of Medical Applied Chemistry, Chung Shan Medical University , Taichung 40201, Taiwan
| | - Kumaraswamy Sorra
- Medicinal Chemistry Laboratory, Gunapati Venkata Krishnareddy Biosciences Private Limited , Hyderabad 500076, India
| | - Ta-Hsien Chuang
- School of Pharmacy, China Medical University , Taichung 40402, Taiwan
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6
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Jeong HJ, Namgoong SK. Formation of 4-tert-Butyl-1,2,3,4-tetrahydroquinoline from One-pot Reactions of Quinoline/organoaluminum Complex with tert-Butyllithium. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2015. [DOI: 10.5012/jkcs.2015.59.6.533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Bulygina LA, Khrushcheva NS, Peregudov AS, Sokolov VI. Cyclopalladated complex of 1-ferrocenylisoquinoline. Russ Chem Bull 2015. [DOI: 10.1007/s11172-015-0834-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Nassiri M. Simple, One-Pot, and Three-Component Coupling Reactions of Azaarenes (Phenanthridine, Isoquinoline, and Quinoline), with Acetylenic Esters Involving Methyl Propiolate or Ethyl Propiolate in the Presence of NH-Heterocyclic or 1,3-Dicarbonyl Compounds. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2011.589559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Seo HJ, Namgoong SK. Trimethyl borate/magnesium halide complex-induced one-pot homologation reactions of isoquinoline with dialkyl-TMP-zincate. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Hou H, Zhang Y, Yan CG. One-pot synthesis of 4-substituted isoquinolinium zwitterionic salts by metal-free C–H bond activation. Chem Commun (Camb) 2012; 48:4492-4. [DOI: 10.1039/c2cc30708a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Si C, Myers AG. A versatile synthesis of substituted isoquinolines. Angew Chem Int Ed Engl 2011; 50:10409-13. [PMID: 21910199 DOI: 10.1002/anie.201104769] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Indexed: 11/10/2022]
Affiliation(s)
- Chong Si
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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13
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Vicente J, González-Herrero P, Frutos-Pedreño R, Chicote MT, Jones PG, Bautista D. Synthesis and Reactivity of Ortho-Palladated Phenylacetamides. Intramolecular C−N vs C−O Reductive Coupling after CO or XyNC Insertion into the Pd−C Bond. Synthesis of Isoquinoline- and Isocoumarin-Based Heterocycles. Organometallics 2011. [DOI: 10.1021/om101110s] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José Vicente
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Pablo González-Herrero
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Roberto Frutos-Pedreño
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - María-Teresa Chicote
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Postfach 3329, 38023 Braunschweig, Germany
| | - Delia Bautista
- SAI, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
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Abboud M, Mamane V, Aubert E, Lecomte C, Fort Y. Synthesis of polyhalogenated 4,4'-bipyridines via a simple dimerization procedure. J Org Chem 2010; 75:3224-31. [PMID: 20426403 DOI: 10.1021/jo100152e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polyhalogenated 4,4'-bipyridines were conveniently synthesized in a single step starting from dihalopyridines. A mechanism was proposed on the basis of experiments performed with 2-chloro-5-bromopyridine 1a. 2-Chloro-4-lithio-5-bromopyridine A1 was produced via ortholithiation of 1a by using either LDA or t-BuLi bases. When LDA was used, dimer 3a containing two chlorines and two bromine atoms was formed predominantly accompanied by several byproducts whose structure and mechanism of formation are discussed. In the case of t-BuLi, although the major product was 2-chloropyridine 7, a new pyridone product 8 was formed that is probably the result of the dihydropyridine intermediate hydrolysis. The dimerization procedure involving LDA was employed to prepare a large number of halogenated 4,4'-bipyridines in moderate to good yields. In some specific cases, halogenated 3,4' and 2,4'-bipyridines were obtained in lower yields and their structures were unambiguously assigned by X-ray diffraction analysis.
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Affiliation(s)
- Mohamed Abboud
- Equipe Synthèse Organométallique et Réactivité (SOR), Laboratoire SRSMC, UMR CNRS-UHP 7565 Institut Jean Barriol, Nancy Université, BP 70239, Bd des Aiguillettes, 54506 Vandoeuvre-les-Nancy, France
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Chamas ZEA, Dietz O, Aubert E, Fort Y, Mamane V. Synthesis of new pentacyclic chromophores through a highly regio- and diastereoselective cascade process. Org Biomol Chem 2010; 8:4815-8. [DOI: 10.1039/c0ob00390e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Recent Developments in Reissert-Type Multicomponent Reactions. TOPICS IN HETEROCYCLIC CHEMISTRY 2010. [DOI: 10.1007/7081_2010_42] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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