A rapid and facile synthesis of new spiropyrimidines from 5-(2-arylethylidene-2-oxo)-1,3-dimethylpyrimidine-2,4,6-triones
作者:Lali L. Gozalishvili、Tetyana V. Beryozkina、Irina V. Omelchenko、Roman I. Zubatyuk、Oleg V. Shishkin、Nadezhda N. Kolos
DOI:10.1016/j.tet.2008.06.097
日期:2008.9
A series of new tetraazaspiro[5,5]-undec-4-ene-2,7,9,11-tetraones have been obtained by reaction of 5-(2-arylethylidene-2-oxo)-1,3-dimethylpyrimidine-2,4,6-triones with ureas. A three-component one-pot procedure to the spiranes synthesis was also developed. One-pot reaction of arylglyoxals, 1,3-dimethylbarbituric acid, and diniethylurea led to imidazolyl-1,3-dimethylbarbituric acids. Mechanisms of studied reactions were discussed. (c) 2008 Elsevier Ltd. All rights reserved.