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Abstract
Amines such as 1,2,3,4-tetrahydroisoquinoline undergo redox-neutral annulations with 2-alkylquinoline-3-carbaldehydes as well as the corresponding 4-alkyl isomers and pyridine analogues. These processes involve dual C-H bond functionalization. Acetic acid is used as a cosolvent and acts as the sole promoter of these transformations.
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Affiliation(s)
- Zhengbo Zhu
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
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2
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Mukhopadhyay C, Das P, Butcher RJ. An expeditious and efficient synthesis of highly functionalized [1,6]-naphthyridines under catalyst-free conditions in aqueous medium. Org Lett 2011; 13:4664-7. [PMID: 21806007 DOI: 10.1021/ol201877v] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This is the first report of an innovative, one-pot, catalyst-free, pseudo-five-component synthesis of 1,2-dihydro[1,6]naphthyridines from methyl ketones, amines, and malononitrile in ecofriendly solvent water. The protocol avoids the use of expensive catalysts, toxic organic solvents and anhydrous condition. The approach to naphthyridines presented herein offers for the first time an unprecedented coupling which leads to the construction of both the nitrogen containing rings during the synthesis without starting from any nitrogen-containing heterocycle moiety.
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Affiliation(s)
- Chhanda Mukhopadhyay
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India.
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3
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Design, synthesis, and evaluation of fused heterocyclic analogs of SCH 58261 as adenosine A2A receptor antagonists. Bioorg Med Chem Lett 2008; 18:4204-9. [DOI: 10.1016/j.bmcl.2008.05.069] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2008] [Revised: 05/15/2008] [Accepted: 05/16/2008] [Indexed: 11/23/2022]
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Zhou Y, Beeler AB, Cho S, Wang Y, Franzblau SG, Snyder JK. Library Synthesis Using 5,6,7,8-Tetrahydro-1,6-naphthyridines as Scaffolds. ACTA ACUST UNITED AC 2008; 10:534-40. [DOI: 10.1021/cc800038r] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ya Zhou
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, and Institute for Tuberculosis Research, College of Pharmacy, University of Illinois, 833 South Wood Street, MC964, Room 412, Chicago, Illinois 60612
| | - Aaron B. Beeler
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, and Institute for Tuberculosis Research, College of Pharmacy, University of Illinois, 833 South Wood Street, MC964, Room 412, Chicago, Illinois 60612
| | - Sanghyun Cho
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, and Institute for Tuberculosis Research, College of Pharmacy, University of Illinois, 833 South Wood Street, MC964, Room 412, Chicago, Illinois 60612
| | - Yuehong Wang
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, and Institute for Tuberculosis Research, College of Pharmacy, University of Illinois, 833 South Wood Street, MC964, Room 412, Chicago, Illinois 60612
| | - Scott G. Franzblau
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, and Institute for Tuberculosis Research, College of Pharmacy, University of Illinois, 833 South Wood Street, MC964, Room 412, Chicago, Illinois 60612
| | - John K. Snyder
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, and Institute for Tuberculosis Research, College of Pharmacy, University of Illinois, 833 South Wood Street, MC964, Room 412, Chicago, Illinois 60612
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Zhou Y, Porco JA, Snyder JK. Synthesis of 5,6,7,8-Tetrahydro-1,6-naphthyridines and Related Heterocycles by Cobalt-Catalyzed [2 + 2 + 2] Cyclizations. Org Lett 2007; 9:393-6. [PMID: 17249770 DOI: 10.1021/ol0625280] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Microwave-promoted, cobalt-catalyzed intramolecular [2 + 2 + 2] cyclizations of dialkynylnitriles successfully gave 5,6,7,8-tetrahydro-1,6-naphthyridines. The efficient synthesis of these relatively simple, yet rarely addressed heterocycles enabled the preparation of a collection of these compounds.
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Affiliation(s)
- Ya Zhou
- Department of Chemistry and the Center for Methodology and Library Development, Boston University, Boston, Massachusetts 02215, USA
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Harling JD, Harrington FP, Thompson M. A FACILE SYNTHESIS OF THE 3-AMINO-5,6,7,8-TETRAHYDRO[1,6]NAPHTHYRIDINE SYSTEM AND SOME ALKYLATED AND POLYCYCLIC HOMOLOGUES. SYNTHETIC COMMUN 2001. [DOI: 10.1081/scc-100103271] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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