作者:Amina Benazzouz、Malika Makhloufi-Chebli、Nejla Khatir-Hamdi、Baya Boutemeur-Khedis、Artur M.S. Silva、Maamar Hamdi
DOI:10.1016/j.tet.2015.04.028
日期:2015.6
A new series of 4-aryl-6-methyl-5-(2-oxo-2H-chromene-3-carbonyl)-3,4-dihydropyrimidin-2(1H)-ones/thiones (DHPMs) have been synthesized through multicomponent Biginelli reactions, involving 3-(acetoacetyl)coumarin derivatives, para-substituted benzaldehydes, and urea/thiourea in refluxing acetonitrile, in the presence of a catalytic amount of sulfuric acid. The structure of all newly synthesized compounds has been established by 2D NMR spectroscopic spectra (HSQC, HMBC, and NOESY), elemental analysis, and mass spectrometry. (C) 2015 Elsevier Ltd. All rights reserved.