3,3'-(Ethane-1,2-diyl)bis(3,4-dihydro-2H-1,3-benzoxazine)

Abstract

The title compound, C 18H 20N 2O 2, was prepared by Mannichtype reaction of phenol, ethane-1,2-diamine and formaldehyde. The heterocyclic rings adopt half-chair conformations. The acyclic methylene groups attached to the N atoms are in an axial position. In the crystal, weak C-H···O hydrogen bonds link the molecules into dimers. These dimers are further connected via C- H···π contacts.