Abstract
Abstract A series of cross-conjugated enones [1-10] are condensed with menthone under (PTC) technique. The structures of the new products [11-20] were identified by spectral analysis. The probable reaction mechanism for each condensation is investigated by theoretical approach using both quantum mechanic (AM1) and molecular (MM2) computational methods. The unique behavior of these cross conjugated enones toward nucleophilic addition orientation, substituent effect on the electronic distribution, and the polarity of the molecules have been examined.