Stereoselective and Regioselective Pinacol-Type Rearrangement of a Fused Bicyclic Oxetanol Scaffold

摘要

The Paternò-Büchi reaction between benzaldehyde and trimethylsilyloxycyclopentene gave access to an unprecedented silyl ether derivative of 6-oxabicyclo[3.2.0]heptan-1-ol. The bicyclic structure underwent selective reductive ring opening and acid-catalyzed pinacol-type rearrangement reactions with complete regioselectivity, accompanied by moderate to excellent mechanism-dependent diastereoselectivity.