Crystal structure of 2-tert-butyl-2,3-di­hydro-1H-benzo[c]pyrrol-1-one

The asymmetric unit of the title compound, C(12)H(15)NO, comprises two sym­metry-independent mol­ecules which differ mainly in the conformations of the tert-butyl groups. The mol­ecules contain an essentially planar five-membered 3-pyrroline ring incorporating a carbonyl substituent (pyrrolinone) which forms part of an isoindolinone skeleton. The planarity of the pyrrole ring is compared to other structures with isoindolinone. There are only weak intra- and inter­molecular C—H⋯O and C—H⋯π-electron-ring inter­actions in the crystal structure.