Noland, W. E.; Gullickson, G. C.; Dickson, R. R.; Groess, L. L.; Tritch, K. J. Acta Crystallogr. Sect. E, 2014, 70, 192.
The title compound, C23H20N2O6S, crystallizes as a racemate in the space group P-1, with an overall L- or J-shape to each molecule. Centrosymmetric pairs of molecules are tandem hydrogen bonded between the hydroperoxy H atom and carbonyl O atom. A different centrosymmetric pairing has stacked S-tolyl rings, and a third pairing is L,J-interlocked by the short leg. Except for stacked tolyl pairs, neighboring π-systems are much closer to orthogonal than coaxial. The title compound is the first example of a hydroperoxide obtained from the autoxidation of a Diels–Alder adduct of a 2-vinylpyrrole.