Novel synthesis of enantiomerically enriched 5-hydroxycyclohex-2-enone by enantioselective deprotonation strategy: application to the synthesis of inositol phosphatase inhibitor

A novel synthetic path to enantiomerically enriched 5-hydroxycyclohex-2-enone, a versatile chiral building block, is developed by a two-step sequence, where an enantioselective deprotonation of a 3,5-dihydroxycyclohexanone derivative with lithium (S,S′)-α,α′-dimethyldibenzylamide in the presence of TMSCl, and subsequent treatment of the silyl enol ether with TBAF in THF at room temperature are employed as the key reactions.