Acta Cryst. (2003). E59, o1420-o1422 [ doi:10.1107/S1600536803018804 ]
Abstract: The title compound, C22H20ClN3O3S·1.5C6H6, was synthesized by the intermolecular [3 + 2]-cycloaddition of azomethine ylide, derived from isatin and sarcosine by a decarboxylative route, and 5-(4-chlorobenzylidene)-3-ethylthiazolidine-2,4-dione. In the molecule of the title compound, an approximately planar 2-oxindole system, a pyrrolidine ring in an envelope conformation, and a planar thiazolidine ring are joined via two spiro-junctions. The molecules in the crystal are linked by an intermolecular N-HN hydrogen bond [NN = 3.071 (3) Å], forming infinite chains running along the c axis. One of the solvate benzene molecules occupies a special position on an inversion centre.
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