The asymmetric 1,3-dipolar cycloaddition of nitrile oxides, generated in situ from aldoximes by direct oxidation with tertbutyl hypochlorite, to 2-propen-1-ol was achieved by utilizing diisopropyl (R, R)-tartrate as a chiral auxiliary to afford the corresponding (R)-2-isoxazolines with high enantioselectivity up to 96% ee.