Synthesis of Carbohydrates and Related Polyhydroxylated Compounds Employing Asymmetric Dihydroxylation. 1. An Access to Erythro-diols
Asymmetric dihydroxylation provides an easy access to tetrose: threose directly from the (E)-olefin 1, and erythrose via an irreversible Payne-type rearrangement - opening process of the threitol cyclic sulfate 5.