Stereoselective Synthesis of Substituted Tetrahydropyrans via Domino Olefin Cross-Metathesis/Intramolecular Oxa-Conjugate Cyclization

A novel strategy for the stereoselective synthesis of substituted tetra hydropyrans has been developed on the basis of a domino olefin cross-metathesis/intramolecular oxa-conjugate cyclization catalyzed by the Hoveyda-Grubbs second-generation catalyst.