4′-(2,4-Dichlorophenyl)-1,1′-dimethylpiperidine-3-spiro-3′-pyrrolidine-2′-spiro-3′′-indoline-4,2′′-dione

Abstract

In the title compound, C23H23Cl2N3O2, the pyrroline ring adopts an envelope conformation and the piperidinone ring assumes a slightly twisted chair form. In the crystal, inversion dimers linked by pairs of N—H...O hydrogen bonds generate an R28 graph-set motif and a short Cl...Cl contact of 3.478 (1) Å occurs.