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2. P. Dalla Croce, D. Pocar, R. Stradi and P. Trimarco, J. Chem. Soc., Perkin Trans. I., in press.;
3. D. Pocar, L. M. Rossi and P. Trimarco, J. Heterocyclic Chem., in press;
4. S. Cilloni, D. Pocar, L. M. Rossi and P. Trimarco, J. Chem. Res., 1979, in press.
5. A similar result was obtained by reacting under the same conditions the 4-(N-methylmorpholinio)-5-morpholino-3-(4-nitrophenyl)-4,5-dihydroisoxazole iodide (1): 1a was formed as the main product accompanied by 2a and 3a, the amount of which was increased by prolonging the reaction time.