Acta Cryst. (2005). E61, o142-o144  [ doi:10.1107/S1600536804032829 ]

3-Bromo-1,4-diphenyl-1,2,7,9-tetraazaspiro[5.4]dec-2-ene-6,8,10-trione acetone solvate

G. Bruno, A. Rotondo, F. Nicoló, F. Foti, G. Grassi and F. Risitano

Abstract: Conformational analyses and structural comparison of the title compound, C₁₈H₁₃BrN₄O₃·C₂H₆O, and the related compound 4-(4-methoxyphenyl)-3-phenyl-2,4,8,10-tetraazaspiro[5.4]dec-1-ene-6,8,10-trione acetone solvate monohydrate [Bruno, Rotondo, Nicoló, Foti, Grassi & Risitano (2005). Acta Cryst. E61, o139-o141], co-crystallized with solvent molecules, are presented. Both compounds were synthesized by the cycloaddition of C-H and C-Br nitrilimines, generated in situ, starting from the same substrate [Foti, Grassi & Risitano (2005). Synlett. Submitted]. However, different experimental conditions led to products with reverse regioselectivity.

Online 18 December 2004

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