Uncatalyzed addition of indoles and N-methylpyrrole to 3-formylchromones: synthesis and some reactions of (chromon-3-yl)bis(indol-3-yl)methanes and E-2-hydroxy-3-(1-methylpyrrol-2-ylmethylene)chroman-4-ones
Uncatalyzed addition of indoles and N-methylpyrrole to 3-formylchromones: synthesis and some reactions of (chromon-3-yl)bis(indol-3-yl)methanes and E-2-hydroxy-3-(1-methylpyrrol-2-ylmethylene)chroman-4-ones
作者:Vyacheslav Ya. Sosnovskikh、Roman A. Irgashev、Anna A. Levchenko
DOI:10.1016/j.tet.2008.05.032
日期:2008.7
(Chromon-3-yl)bis(indol-3-yl)methanes and E-2-liydroxy-3-(1-methylpyrrol-2-ylmethylene)chroman-4-ones have been obtained in good yields from 3-formylchromones on reaction with indoles and N-methylpyrrole under solvent-free conditions. Reactions of (chromon-3-yl)bis(indol-3-yl)methanes with guanidine carbonate and hydrazine hydrate proceed with the participation of the chromone ring system and lead to the formation of the corresponding pyrimiclines and pyrazoles bearing the bis(indol-3-yl)methyl moiety. (C) 2008 Elsevier Ltd. All rights reserved.