Ultrasonics promoted synthesis of thiazolidinones from 2-aminopyridine and 2-picolilamine
作者:Daniela P. Gouvêa、Valéria D.O. Bareño、Juliano Bosenbecker、Bruna B. Drawanz、Patrícia D. Neuenfeldt、Geonir M. Siqueira、Wilson Cunico
DOI:10.1016/j.ultsonch.2012.03.004
日期:2012.11
The efficient multicomponent synthesis of thiazolidinones from the reaction of arenealdehydes, mercaptoacetic acid and 2-picolilamine or 2-aminopyridine under ultrasound irradiation are reported. The reaction with 2-aminopyridine needs a Lewis acid catalysis to afford the corresponding 2-aryl-3-(pyridin-2-yl)-1,3-thiazolidin-4-ones. All novel compounds were identified and characterized by H-1 and C-13 NMR spectra. Applying the sonochemical methodology, two series of heterocyclic thiazolidinones were synthesized in good yields after short reaction times. (C) 2012 Elsevier B.V. All rights reserved.