1,4-Bis{(+)-(S)-[1-(1-naphth-yl)eth-yl]imino-meth-yl}benzene.

The title compound, C(32)H(28)N(2), is a chiral bis-imine in which both imine groups display the common E configuration. The naphthyl groups present different orientations with respect to the central core, as reflected in the dihedral angles of 21.4 (2) and 78.

(+)-(S,S)-1,3-Bis[(tetra-hydro-furan-2-yl)-meth-yl]thio-urea.

The title compound, C(11)H(20)N(2)O(2)S, is an enanti-omerically pure heterocycle-substituted thio-urea synthesized under solvent-free conditions. The thio-urea unit adopts a ZZ conformation, with the HN-(C=S)-NH core almost planar and the tetra-hydro-furfuryl groups placed below and above this plane. The whole mol-ecule thus approximates to noncrystallographic C(2) symmetry.