Inclusion and gelation properties of novel tetra- and hexasalicylide derivatives

Some novel tetra- and hexasalicylide derivatives were synthesized. The tetrasalicylides having a 5-substituted halogen atom on the aromatic ring form organogels with several kinds of organic solvents, whereas the parent compound does not. In contrast, hexasalicylides form stable inclusion crystals with several organic guest molecules.