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1.Tetrahedron Letters Volume 48, Issue 8, 19, 2007, Pages 1349-1352
A highly regio- and chemoselective addition of carbon nucleophiles to pyrimidinones. A new route to C4 elaborated Biginelli compounds
Kamaljit Singh,Divya Aroraa and Sukhdeep Singha
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http://dx.doi.org/10.1016/j.tetlet.2006.12.111
Concise Synthesis of Guanidine-Containing Heterocycles Using the Biginelli Reaction
Bradley L. Nilsson and Larry E. Overman
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http://dx.doi.org/10.1021/jo061199m
Biginelli condensation of aliphatic aldehydes catalysed by zinc methanesulfonate
Wang, Min; Jiang, Heng; Wang, Zhichang
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http://www.ingentaconnect.com/content/stl/jcr/2005/00002005/00000011/art00003
Short Communication
An Efficient One-Pot Synthesis of Dihydropyrimidinones by a Samarium Diiodide Catalyzed Biginelli Reaction Under Solvent-Free Conditions
Xiaoyan Han, Fan Xu, Yiqin Luo, Qi Shen
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http://dx.doi.org/10.1002/ejoc.200400753
One-pot construction 3,4-dihydropyrimidin-2(1H)-ones catalysed by samarium(III)
Xu, Hui; Wang, Yan-Guang
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http://www.ingentaconnect.com/content/stl/jcr/2003/00002003/00000006/art00027