Résumé
An atom-economical and practical synthesis of cis-N- benzenesulfonamide acylaziridines through the Baldwin rearrangement of various N-benzenesulfonamide isoxa- zolines has been reported. A detailed experimental study revealed the beneficial effect of microwaves and pointed out the crucial role of the temperature in the reaction course. Moderate to good yields and excellent cis stereo- selectivities were achieved for 13 examples.