Synthesis of new optically pure isoxazolines via 1,3-dipolar cycloaddition of nitrile oxides with allyl esters derived from eugenol

1,3-dipolar cycloaddition of arylnitrile oxides with allyl ester prepared from eugenol afforded new chiral isoxazolines in good yields. The chemical structure of this compounds was characterized by 1H NMR,13C NMR, 2D NMR and TOF-MS analysis. All the cycloadducts were obtained through a regiospecific and stereospecific pathway and all cases, only one isomer was isolated, as established by unambiguous NMR analysi