Chiral Version of the Burgess Reagent and Its Reactions with Oxiranes: Application to the Formal Enantiodivergent Synthesis of Balanol†

An efficient formal synthesis of a (−)-balanol intermediate (25a) from cyclohexadiene oxide was accomplished in eight steps. An asymmetric version of the Burgess reagent allows for an enantiodivergent approach to both enantiomers of balanol from a racemic starting material.