4.4 Article

Ligand-free palladium-catalyzed intramolecular arylation of chromones: an expedient synthesis of 1-benzopyrano[3,2-c]quinolines

Journal

TETRAHEDRON LETTERS
Volume 54, Issue 18, Pages 2221-2225

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.02.057

Keywords

Arylation; Palladium-catalyst; Chromone; Ugi reaction; Chroman-3-carbaldehyde; 1-Benzopyran

Funding

  1. CSIR, New Delhi [02(0029)/11/EMR-II]
  2. CSIR

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Synthesis of hitherto unreported 1-benzopyrano[3,2-c]quinolin-12-ones has been accomplished by a ligand-free Pd-catalyzed intramolecular C-H arylation protocol at the C-2 position of a chromone moiety in an Ugi product. (C) 2013 Elsevier Ltd. All rights reserved.

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