cis-3-Azabicyclo[3.2.0]heptane-2,4-dione

Abstract

The title compound, C6H7NO2, was synthesized from cis-1,2-cyclobutanedicarboxylic anhydride by reaction with ammonium acetate under microwave conditions. The crystal structure of the compound shows that the cyclobutane ring is planar with angles ranging from 89.64 (12) to 90.37 (12)°. The cis-3-azabicyclo[3.2.0]heptane-2,4-dione molecules are linked into a chain formation through hydrogen N—H...O=C bonds. Parallel packing is seen between two cyclobutane rings related by inversion symmetry.