Aromatics to riquinanes. Synthesis and photoreaction of tricyclo[5.2.2.0~2.6]undecanes having an α-methoxy β,γ-unsaturated carbonyl chromophore

摘要

A novel, general,k and stereoselective route for rapid creation of unctionalized, linearly fused cis:anti:cis triquinanes from aromatic precursors has been presented. Cycloaddition of 2-methoxy- spiro[cyclohexa-2,4-diene-6-2'-oxacyclopropan]one with various dienophiles nd the photochemical reaction of appropriately designed tricyclic systems, having an α-methoxy β,γ-enone chromophore upon triplet (~3T) sensitization, are the key elements of our approach.