Phenolic Dienes as Highly Selective Dienophiles in the Asymmetric Organocatalyzed Three-Component Vinylogous Povarov Reaction.

J Org Chem

Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.

Published: September 2024

AI Article Synopsis

  • Our research introduces a new method for creating 1,2,3,4-tetrahydroquinolines using a chiral phosphoric acid in a three-component Povarov reaction.
  • This process makes use of phenolic dienes as dienophiles and yields a variety of 2,3,4-trisubstituted tetrahydroquinolines.
  • The resulting compounds have a styryl group at position 4 and are produced in high yields with impressive selectivity measures, including regio-, diastereo-, and enantioselectivities greater than 95:5 dr and up to 99% ee.

Article Abstract

Our study presents a novel enantioselective route for the synthesis of 1,2,3,4-tetrahydroquinolines via a chiral phosphoric acid-catalyzed three-component Povarov reaction, employing phenolic dienes as dienophiles. This approach produces a diverse array of 2,3,4-trisubstituted tetrahydroquinolines, each featuring a styryl group at position 4, in high yields with excellent regio-, diastereo-, and enantioselectivities (>95:5 dr and up to >99% ee).

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Source
http://dx.doi.org/10.1021/acs.joc.4c01239DOI Listing

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