2-[1′-(Benzyloxy)spiro[indane-1,2′-pyrrolidine]-5′-yl]acetonitrile

Abstract

In the title compound, C21H22N2O, the planes of the two six-membered rings make a dihedral angle of 89.51 (7)°. The pyrrolidine ring has a puckering amplitude q 2 = 0.418 (3) and a pseudo-rotation phase angle ϕ2 = −166.8 (5), adopting a twist conformation (T). The other five-membered ring has a puckering amplitude q 2 = 0.247 (2) and a pseudo-rotation phase angle ϕ2 = −173.7 (5), adopting an envelope conformation with the CH2 atom adjacent to the C atom common with the pyrrolidine ring as the flap. In the crystal, mol­ecules are linked via C—H⋯N, enclosing R 2 2(20) rings, forming chains propagating along [100]. The aceto­nitrile group is disordered over two positions and was refined with a fixed occupancy ratio of 0.56:0.44.