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Deprotometalation of substituted pyridines and regioselectivity-computed CH acidity relationships. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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El Bouakher A, Allouchi H, Abrunhosa-Thomas I, Troin Y, Guillaumet G. Suzuki-Miyaura Reactions of Halospirooxindole Derivatives. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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3
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El Bouakher A, Massip S, Jarry C, Troin Y, Abrunhosa-Thomas I, Guillaumet G. A General and Efficient Method to Access Tetracyclic Spirooxindole Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403292] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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4
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Fañanás FJ, Arto T, Mendoza A, Rodríguez F. Synthesis of 2,5-Dihydropyridine Derivatives by Gold-Catalyzed Reactions of β-Ketoesters and Propargylamines. Org Lett 2011; 13:4184-7. [DOI: 10.1021/ol201655u] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Francisco J. Fañanás
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, Julián Clavería 8, 33006-Oviedo, Spain
| | - Tamara Arto
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, Julián Clavería 8, 33006-Oviedo, Spain
| | - Abraham Mendoza
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, Julián Clavería 8, 33006-Oviedo, Spain
| | - Félix Rodríguez
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, Julián Clavería 8, 33006-Oviedo, Spain
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Ma Y, Breslin S, Keresztes I, Lobkovsky E, Collum DB. Synthesis of a 7-azaindole by chichibabin cyclization: reversible base-mediated dimerization of 3-picolines. J Org Chem 2009; 73:9610-8. [PMID: 18707175 DOI: 10.1021/jo801410s] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The lithium diisopropylamide (LDA)-mediated condensation of 2-fluoro-3-picoline and benzonitrile to form 2-phenyl-7-azaindole via a Chichibabin cyclization is described. Facile dimerization of the picoline via a 1,4-addition of the incipient benzyllithium to the picoline starting material and fast 1,2-addition of LDA to benzonitrile cause the reaction to be complex. Both adducts are shown to reenter the reaction coordinate to produce the desired 7-azaindole. The solution structures of the key intermediates and the underlying reaction mechanisms are studied by a combination of IR and NMR spectroscopies.
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Affiliation(s)
- Yun Ma
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, USA
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Gros PC, Fort Y. Combinations of Alkyllithiums and Lithium Aminoalkoxides for Generation of Functional Pyridine Organometallics and Derivatives. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900324] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Philippe C. Gros
- Groupe SOR, SRSMC, CNRS, Nancy Université, Faculté des Sciences, Boulevard des Aiguillettes, 54506 Vandoeuvre‐Lès‐Nancy, France, Fax: +33‐3‐83684979
| | - Yves Fort
- Groupe SOR, SRSMC, CNRS, Nancy Université, Faculté des Sciences, Boulevard des Aiguillettes, 54506 Vandoeuvre‐Lès‐Nancy, France, Fax: +33‐3‐83684979
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Zhong YL, Lindale MG, Yasuda N. An efficient access to 3,6-disubstituted 1H-pyrazolo[3,4-b]pyridines via a one-pot double SNAr reaction and pyrazole formation. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.142] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Doudouh A, Gros PC, Fort Y, Woltermann C. TMSCH2Li–LiDMAE: a new nonnucleophilic reagent for C-2 lithiation of halopyridines. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.04.059] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Toudic F, Heynderickx A, Plé N, Turck A, Quéguiner G. Regioselective synthesis and metallation of tributylstannylfluoropyrazines. Application to the synthesis of some new fluorinated liquid crystals diazines. Part 34. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00849-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Bouillon A, Lancelot JC, Collot V, Bovy PR, Rault S. Synthesis of novel halopyridinylboronic acids and esters. Part 2: 2,4, or 5-Halopyridin-3-yl-boronic acids and esters. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00283-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Regioselective synthesis and metallation of fluoroiodopyrazines. Application to the synthesis of aryl and alkylbenzylpyrazines. Diazines. Part 31. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(01)01140-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Regioselective Synthesis of Organolithiums by Deprotonation. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1460-1567(02)80033-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Moseley JD, Moss WO, Welham MJ. Investigation of an Alternative Route to ZD3638 and Cost-Benefit Analysis Comparison of Raw Materials with the Previous Route. Org Process Res Dev 2001. [DOI: 10.1021/op0000935] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonathan D. Moseley
- AstraZeneca, Process Research and Development, Avlon Works, Severn Road, Hallen, Bristol BS10 7ZE, U.K
| | - William O. Moss
- AstraZeneca, Process Research and Development, Avlon Works, Severn Road, Hallen, Bristol BS10 7ZE, U.K
| | - Matthew J. Welham
- AstraZeneca, Process Research and Development, Avlon Works, Severn Road, Hallen, Bristol BS10 7ZE, U.K
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Plé N, Turck A, Heynderickx A, Quéguiner G. Functionalization by metallation of fluoropyrazine. Diazines XXI. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00173-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Plé N, Turck A, Heynderickx A, Quéguiner G. Metalation of diazines.XI. Directedortho-lithiation of fluoropyrimidines and application to synthesis of an azacarboline. J Heterocycl Chem 1994. [DOI: 10.1002/jhet.5570310602] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Recent Advances in Fluoroheterocyclic Chemistry. ADVANCES IN HETEROCYCLIC CHEMISTRY 1994. [DOI: 10.1016/s0065-2725(08)60006-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
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18
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Shi GQ, Takagishi S, Schlosser M. Metalated fluoropyridines and fluoroquinolines as reactive intermediates: new ways for their regioselective generation. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)80824-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Groth U, Huhn T, Porsch B, Schmeck C, Schöllkopf U. Asymmetric Synthesis via Heterocyclic Intermediates, LII. Synthesis oftert-Leucine and Related Amino Acids. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/jlac.1993199301117] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Rewcastle GW, Katritzky AR. Generation and Reactions of sp2-Carbanionic Centers in the Vicinity of Heterocyclic Nitrogen Atoms. ADVANCES IN HETEROCYCLIC CHEMISTRY VOLUME 56 1993. [DOI: 10.1016/s0065-2725(08)60195-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Queguiner G, Marsais F, Snieckus V, Epsztajn J. Directed Metalation of Pi-Deficient Azaaromatics: Strategies of Functionalization of Pyridines, Quinolines, and Diazines. ADVANCES IN HETEROCYCLIC CHEMISTRY VOLUME 52 1991. [DOI: 10.1016/s0065-2725(08)60965-4] [Citation(s) in RCA: 201] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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22
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Trécourt F, Marsais F, Güngör T, Quéguiner G. Improved synthesis of 2,3-disubstituted pyridines by metallation of 2-chloropyridine: a convenient route to fused polyheterocycles. ACTA ACUST UNITED AC 1990. [DOI: 10.1039/p19900002409] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Oae S, Furukawa N. Heteroaromatic Sulfoxides and Sulfones: Ligand Exchange and Coupling in Sulfuranes and Ipso-Substitutions. ADVANCES IN HETEROCYCLIC CHEMISTRY 1990. [DOI: 10.1016/s0065-2725(08)60337-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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24
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Marsais F, Trécourt F, Bréant P, Quéguiner G. Directed lithiation of 4-halopyridines: Chemoselectivity, regioselectivity and application to synthesis. J Heterocycl Chem 1988. [DOI: 10.1002/jhet.5570250112] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mallet M, Quéguiner G. Action du n-butyllithium sur les bromo-3 halogeno-2 pyridines fluoree, chloree et bromee. Tetrahedron 1985. [DOI: 10.1016/s0040-4020(01)96696-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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