The title compound, C17H27NO2S, exhibits a distorted geometry of the aromatic ring with elongated bonds at the ipso-C atom. The S atom deviates from the aromatic ring plane by 0.393 (4) Å. Similar to this, the adjacent isopropyl groups are bent out of the aromatic ring plane by -0.125 (4) and -0.154 (4) Å. Even the distant isopropyl group in para-position to the sulfonyl moiety shows a slight deviation from the ring plane of 0.111 (5) Å. These distortions, which are caused by the bulky substituents, can also be observed in related sulfonyl-aziridine structures.
Keywords: aziridine; consecutive ring-opening reactions; crystal structure; triisopropylbenzenesulfonyl.