Thermal reactions of cyclopropenone ketals. Key mechanistic features and scope of the cycloaddition reactions of delocalized singlet vinylcarbenes: three-carbon 1,1-/1,3-dipoles
Thermal cycloaddition reactions of .pi.-delocalized singlet vinylcarbenes: three-carbon 1,1-/1,3-dipoles. The thermal three-carbon + two-carbon cycloaddition