Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 8 (August 2012)

organic compounds

xu5557 scheme

Acta Cryst. (2012). E68, o2363 [ doi:10.1107/S1600536812029625 ]

2,2-Diethyl 3,4-dimethyl 5-(4-cyanophenyl)pyrrolidine-2,2,3,4-tetracarboxylate

L. He

Abstract: The title compound, C₂₁H₂₄N₂O₈, was synthesized by a 1,3-dipolar cycloaddition reaction of dimethyl fumarate, diethyl 2-aminomalonate and 4-cyanobenzaldehyde. Both methyl ester groups display a trans configuration and the pyrrolidine ring possesses an envelope conformation, with the C atom in the 3-position as the flap. In the crystal, N-HN hydrogen bonds and weak C-HO interactions occur.


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