Synthesis of asymmetric dibenzophosphole 5-oxides: The first dibenzophosphole-based family of compounds with liquid crystalline behaviour

A synthesis of a new family of chiral dibenzophosphole 5-oxides is described. Using high-yield known reactions we report a method for the synthesis and optical resolution of chiral dibenzophospholes from an unsubstituted system. These molecules are the first examples of a new asymmetrically substituted dibenzophosphole-based group of systems with liquid crystal properties.