Journal
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
Volume 188, Issue 11, Pages 1634-1642Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10426507.2013.777725
Keywords
3; 4-Dihydropyrimidin-2-(1H)-ones; aldehydes; -dicarbonyls; NaHSO4 center dot H2O; ultrasound
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Funding
- Research Council of Urmia University
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A fast and efficient Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-ones (or thiones) by the reaction of aromatic aldehydes, -dicarbonyls, and urea/thiourea using NaHSO4H2O/ultrasound system is presented. The reactions were carried out in refluxing n-hexane/CH3CN (2.5:0.5mL) to afford the products in excellent yields.
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