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1. Polyphosphate Ester-Mediated Synthesis of Dihydropyrimidines. Improved Conditions for the Biginelli Reaction. C. Oliver Kappe*, S. Fabio Falsone. Synlett 1998; 1998(7): 718-720
2.Bismuth Triflate Catalyzed One-Pot Synthesis of 3,4-Dihydropyrimidin-2 (1H)-ones: An Improved Protocol for the Biginelli Reaction. Ravi Varala, M. Mujahid Alam, Srinivas R. Adapa*. Synlett 2003(1): 0067-0070
3. One-Pot Synthesis of Dihydropyrimidinones Using Iodotrimethylsilane. Facile and New Improved Protocol for the Biginelli Reaction at Room Temperature. Gowravaram Sabitha*, G. S. Kiran Kumar Reddy, Ch. Srinivas Reddy, J. S. Yadav. Synlett 2003(6): 0858-0860.
4.Haloacetylated enol ethers: 15†. Study of the regiochemistry of the cyclo-condensation of β-alkoxyvinyl trihalomethyl ketones with N-methyl thiourea. M. A. P. Martins, A. F. C. Flores, G. P. Bastos, N. Zanatta and H. G. Bonacorso, J. Heterocyclic Chem., 36, 837 (1999).
5., An efficient and high yielding protocol for the synthesis of substituted dihydropyrimidin-2(1h)-ones and spiro-fused heterocycles by involving tandem reactions. Bose, D. S. and Idrees, M. (2007) Journal of Heterocyclic Chemistry, 44: 211–214.
6. The first example of a regioselective Biginelli-like reaction based on 3-alkylthio-5-amino-1,2,4-triazole. Chen, Q., Jiang, L.-L., Chen, C.-N. and Yang, G.-F. Journal of Heterocyclic Chemistry, 46: 139–148.
7. Synthesis of some 2-oxo-4-aryl-5-carbethoxy-6-trifluoromethyl1,2,3,4-tetrahydropyrimidines. Henry A. Rutter Jr. and Lillie O. Gustafson. Journal of the Franklin Institute, Volume 258, Issue 5, November 1954, Pages 413-415
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http://dx.doi.org/10.1016/0016-0032(54)90837-6
8.Synthesis, Characterization and Biological Evaluation of Some Dihydropyrimidinones. K. Vijay, S. Ganapaty* and A. Srinivas Rao†. Asian Journal of Chemistry. Volume:22, Issue:4, Page2518 - 2528
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http://www.asianjournalofchemistry.co.in/User/SearchArticle.aspx?Volume=22&Issue=4&Article=&Criteria=Vijay
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