Simple entry to new 2-alkyl-1,2,3,4-tetrahydroquinoline and 2,3-dialkylquinoline derivatives using BiCl3-catalyzed three component reactions of anilines and aliphatic aldehydes in the presence (or lack) of N-vinyl amides
作者:Vladimir V. Kouznetsov、Carlos M. Meléndez Gómez、Fernando A. Rojas Ruíz、Esther del Olmo
DOI:10.1016/j.tetlet.2012.04.008
日期:2012.6
A general protocol for the simple and efficient synthesis of 2-alkyl-1,2,3,4-tetrahydroquinolines and 2,3-dialkylquinolines was reported. Synthetic protocol describes the one-pot preparation of these tetrahydroquinoline and quinoline products using the same reagents (aliphatic aldehydes and anilines) in the BiCl3-catalyzed multicomponent condensation process where the third component, N-vinyl amide is present. (C) 2012 Elsevier Ltd. All rights reserved.
Ruthenium-catalyzed formal alkyl group transfer: Synthesis of quinolines from nitroarenes and alkylammonium halides
作者:Chan Sik Cho、Na Young Lee、Tae-Jeong Kim、Sang Chul Shim
DOI:10.1002/jhet.5570410320
日期:2004.5
Nitroarenes are reductively cyclized with an array of tetraalkylammonium halides and trialkylarnmonium chlorides in the presence of a catalytic amount of a ruthenium catalyst along with tin(II) chloride dihydrate at 180° to afford the corresponding quinolines in moderate to good yields. The addition of tin(II) chloride dihydrate is necessary for the effective formation of quinolines and toluene is