Acta Cryst. (2003). E59, o1467-o1468  [ doi:10.1107/S1600536803019512 ]

1-Methyl-spiro[2.3']oxindole-spiro[3.2'']5'',6''-dihydroimidazo[2'',1''-b]thiazol-3''-one-4-(2-benzo[1,3]dioxol-5-yl)pyrrolidine

X.-F. Li, Y.-Q. Feng, B. Gao and H.-L. Chen

Abstract: The title compound, C₂₃H₂₀N₄O₄S, was synthesized by the intermolecular [3  +  2] cycloaddition of azomethine ylide, derived from isatin and sarcosine by a decarboxylative route, and 2-benzo[1,3]dioxol-5-ylmethylene-5,6-dihydro-imidazo[2,1-b]thiazol-3-one. In the molecule, two spiro junctions link a planar 2-oxindole ring, a pyrrolidine ring in an envelope conformation and a 5,6-dihydro-imidazo[2,1-b]thiazol-3-one ring. Two molecules are connected into a dimer by two N-HN hydrogen bonds.

Online 11 September 2003

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