%0 Journal Article %T Exploration of regiospecificity phenomenon in [2+3] cycloaddition reactions between arylnitrones and trans-substituted nitroethenes on the basis of the reactivity indices theory %A Radomir Jasi¨˝ski %J Current Chemistry Letters %D 2012 %I Growing Science %X Analysis of global electrophilicity and nucleophilicity power of the addends indicate polar character of [2+3] cycloaddition reactions between arylnitrones and trans-substituted nitroethenes. The regioselectivity of these reactions is determined by nucleophilic attack of oxygen atom from nitrone on activated -position of nitroalkene. Interaction of this type leads to 4-nitroisoxazolidines, which are the only reaction products. %K [2+3] Cycloaddition %K Nitrone %K Nitroalkene %K Electrophilicity %K Regioselectivity %U http://www.growingscience.com/ccl/Vol1/ccl_2012_22.pdf