%0 Journal Article %T Three Component Reaction: An Efficient Synthesis and Reactions of 3,4-Dihydropyrimidin-2(1H)-Ones and Thiones Using New Natural Catalyst %A A. M. Elmaghraby %A I. A. Mousa %A A. A. Harb %A M. Y. Mahgoub %J ISRN Organic Chemistry %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/706437 %U http://dx.doi.org/10.1155/2013/706437