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Mi-Sook Shin, and Eun-Young ChoDepartment of Chemistry and Laboratory for Metal-Catalyzed Reactions, Sungkyunkwan University, Suwon 440-746, KoreaReceived May 18, 2004Key Words : Cyclization, Dihydropyran, Diastereoselectivity, Lewis acid, TitaniumDuring the course of our research program aimed atfinding new synthetic methods for the stereoselectiveconstruction of tetrahydropyran units,

Stereoselective Synthesis of trans-2,6-Disubstituted Dihydropyrans through Intramolecular Allylic Transfer Reaction