Synthetic approaches to (R)-cyclohex-2-enol

(R)-Cyclohexenol is a valuable building block in organic synthesis. This mini-review provides methods for synthesis of (R)-cyclohexenol from commercially available reactants. Only reactions with yields in excess of 80% are discussed (ee's range from 99% to 26%). The asymmetric synthesis methods include enantioselecive deprotonation of cyclohexene oxide by chiral lithium amides, asymmetric hydrosilylation of 2-cyclohexen-1-one with chiral catalyst followed by hydrolysis, and enantioselective hydroboration of 1,3-cyclohexadiene with chiral dialkylboranes.