%0 Journal Article %T An Efficient One-Pot Green Protocol for the Synthesis of 5-Unsubstituted 3,4-Dihydropyrimidin-2(1H)-Ones Using Recyclable Amberlyst 15 DRY as a Heterogeneous Catalyst via Three-Component Biginelli-Like Reaction %A Srinivasa Rao Jetti %A Divya Verma %A Shubha Jain %J ISRN Organic Chemistry %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/480989 %U http://dx.doi.org/10.5402/2012/480989