Methyl 3-[ferrocen-yl(hydr-oxy)meth-yl]-1-methyl-2′-oxospiro- [pyrrolidine-2,3′-indoline]-3-carboxyl-ate

Abstract

In the title compound, [Fe(C5H5)(C20H21N2O4)], the pyrrolidine ring exhibits an envelope conformation with the spiro-C atom deviating from the plane of the remaining four atoms. The pyrrolidine ring is almost perpendicular to the indolinone ring [dihedral angle = 87.52 (7)°]. The structure is stabilized by an intra-molecular O - H⋯N hydrogen bond and by inter-molecular C - H⋯O and N - H⋯O inter-actions.