This chapter contains sections titled: Desymmetrization and Kinetic Resolution of Cyclic Anhydrides Desymmetrization of Prochiral Cyclic Anhydrides Kinetic Resolution of Chiral, Racemic Anhydrides Kinetic Resolution of 1,3-Dioxolane-2,4-diones (α-Hydroxy Acid O-Carboxy Anhydrides) Kinetic Resolution of N-Urethane-protected Amino Acid N-Carboxy Anhydrides Parallel Kinetic Resolution of Chiral, Racemic Anhydrides Dynamic Kinetic Resolution of Racemic Anhydrides Dynamic Kinetic Resolution of 1,3-Dioxolane-2,4-diones (α-Hydroxy acid O-Carboxy Anhydrides) Dynamic Kinetic Resolution of N-protected Amino Acid N-Carboxy Anhydrides Additions to Prochiral Ketenes Desymmetrization of meso-Diols Desymmetrization of meso-Diols by Acylation Desymmetrization of meso-Diols by Oxidation Desymmetrization of meso-Epoxides Enantioselective Isomerization of meso-Epoxides to Allylic Alcohols Enantioselective Ring Opening of meso-Epoxides The Horner–Wadsworth–Emmons Reaction Rearrangement of O-Acyl Azlactones, O-Acyl Oxindoles, and O-Acyl Benzofuranones