( E )-6-(Furan-2-yl-methyl-idene)-6,7,8,9-tetra-hydro-pyrido[2,1- b ]quinazoline-11-thione.

A quinazolinthione, C 17 H 14 N 2 OS, was synthesized by the condensation reaction of 6,7,8,9-tetra-hydro-11 H -pyrido[2,1- b ]quinazolin-11-thione with furfural. The mol-ecule crystallizes in the monoclinic system ( Cc space group) and has an E configuration with respect to the exocyclic C=C bond. In the crystal, mol-ecules are linked through C-H⋯π(furan) inter-actions, forming zigzag chains propagating along the [001] direction.