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Search for "pyridine derivatives" in Full Text gives 78 result(s) in Beilstein Journal of Organic Chemistry.

Palladium- catalyzed cross coupling reactions of 4-bromo- 6H-1,2-oxazines

  • Reinhold Zimmer,
  • Elmar Schmidt,
  • Michal Andrä,
  • Marcel-Antoine Duhs,
  • Igor Linder and
  • Hans-Ulrich Reissig

Beilstein J. Org. Chem. 2009, 5, No. 44, doi:10.3762/bjoc.5.44

Graphical Abstract
  • pyridine derivatives: a) BF3·OEt2, CH2Cl2, −78 °C to r.t., overnight. Acknowledgments Generous support by the Deutsche Forschungsgemeinschaft (Graduiertenkolleg at the Technische Universität Dresden “Struktur–Eigenschafts-Beziehungen bei Heterocyclen”), the Fonds der Chemischen Industrie and the Bayer
  • treatment of 9c with boron trifluoride etherate in the presence of an excess of 1-hexyne via an azapyrylium intermediate [34][35]. Additional investigations are required to optimize the preparation diynes of type 11. Conversion of the new functionalized 6H-1,2-oxazines to highly substituted pyridine
  • derivatives will also be reported in due course. Experimental Bromination of 6H-1,2-oxazine 1a, typical procedure 6H-1,2-Oxazine 1a (5.35 g, 26.3 mmol) was dissolved in diethyl ether (200 mL) and treated with bromine (2.75 mL, 53.7 mmol) at −30 °C under argon atmosphere. After 2 h Et3N (54.0 mL, 390 mmol) was
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Preliminary Communication
Published 16 Sep 2009

Regioselective alkynylation followed by Suzuki coupling of 2,4-dichloroquinoline: Synthesis of 2-alkynyl- 4-arylquinolines

  • Ellanki A. Reddy,
  • Aminul Islam,
  • K. Mukkanti,
  • Venkanna Bandameedi,
  • Dipal R. Bhowmik and
  • Manojit Pal

Beilstein J. Org. Chem. 2009, 5, No. 32, doi:10.3762/bjoc.5.32

Graphical Abstract
  • )2PdCl2-CuI or treatment of 4-aryl pyridine-N-oxide with alkynyl Grignard [5] provided the required quinoline or pyridine derivatives, respectively. Notably, synthesis of A following the strategy ‘b’ has not been explored. In our effort towards the synthesis of quinoline derivatives of potential
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Preliminary Communication
Published 01 Jul 2009

Diastereoselective synthesis of some novel benzopyranopyridine derivatives

  • Pradeep K. Mohakhud,
  • Sujeet M. R. Kumar,
  • Vasanth M. R. Kumar,
  • Ravi M. R. Kumar,
  • Moses D. R. Babu,
  • Vyas D. R. K and
  • Om D. R. Reddy

Beilstein J. Org. Chem. 2006, 2, No. 25, doi:10.1186/1860-5397-2-25

Graphical Abstract
  • enantiomers 7a and 7b. The absolute configuration is determined by single crystal X-ray analysis of the mandelate salt. General structures A & B, Tetrahydro cannabinole derivatives. General structures C & D, Benzopyrano pyridine derivatives. Proposed mechanism of tetrahydropyridine formation, Proposed
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Full Research Paper
Published 07 Dec 2006
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