Acta Cryst. (2003). E59, o1307-o1308  [ doi:10.1107/S1600536803017471 ]

5'-(2-Chlorophenyl)-1'-methyl-2'',3''-dihydroindoline-3-spiro-3'-pyrrolidine-4'-spiro-2''-(1,3-benzimidazo[2,1-b]thiazole)-2,3''-dione dioxane hemisolvate

X.-F. Li, Y.-Q. Feng, G. Li and G. Wang

Abstract: The title compound, C₂₆H₁₉ClN₄O₂S·0.5C₄H₈O₂, was synthesized by the intermolecular [3 + 2]-cycloaddition of azomethine ylide, derived from isatin and sarcosine by a decarboxylative route, and 2-(2-chlorobenzylidene)benzo[4,5]imidazo[2,1-b]thiazol-3-one. In the molecule, the two spiro junctions link a planar 2-oxoindoline ring, a pyrrolidine ring in an envelope conformation, and a planar benzo[4,5]imidazo[2,1-b]thiazol-3(2H)-one ring. Two molecules are connected by N-HO hydrogen bonds to a molecule of dioxane on an inversion center, with an NO distance of 2.823 (2) Å.

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