Acta Crystallographica Section E 2009-01-01

1',3',3'-Trimethyl-2,3-diphenyl-2,3-di-hydro-isoxazole-5(4H)-spiro-2'-indoline.

Naoual Laghrib, Jean-Claude Daran, Rachid Fihi, Lhou Majidi, Mohamed Azrour

Index: Acta Crystallogr. Sect. E Struct. Rep. Online 65(2) , o374, (2009)

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Abstract

Two diastereoisomers of the title compound, C(25)H(26)N(2)O, have been prepared by cyclo-addition between 1,3,3-trimethyl-2-methyl-eneindoline and C-phenyl-N-phenyl-nitrone. The stereochemistry of the major diastereoisomer, viz. S,R/R,S, is confirmed by the X-ray analysis. The oxazole and the pyrole rings have envelope conformations. The packing is stabilized by weak C-H⋯π inter-actions involving the phenyl ring attached to the N atom of the oxazole and the phenyl ring of the indole fragment.