Synthesis of Aryl Carbohydrate Synthons and 2,3-Dihydroxypropanoic Acid Derivatives of High Optical Purity.

General routes to both L and D aryl carbohydrate precursors and to erythro and threo 2,3-dihydroxypropanoic acids of high optical purity have been established from readily available optically active aryl cyanohydrins.