Protective Group-Free Syntheses of (±)-Frontalin, (±)-endo-Brevicomin, (±)-exo-Brevicomin, and (±)-3,4-Dehydro-exo-brevicomin: Racemic Pheromones with a 6,8-Dioxabicyclo[3.2.1]octane Ring
Metal-catalyzed organic photoreactions. Iron(III) chloride catalyzed photooxidation of cyclic olefins and its application to the synthesis of exo-brevicomin