Thermal ring opening of exo,exo- and exo,endo-1,3-diethyl-2,4-dimethoxycarbonylbicyclobutane
Abstract
Ring opening of exo,exo and exo,endo-1,3-diethyl-2,4-dimethoxycarbonylbicyclobutane at 300–400 °C and 1–3 s reaction time follows the Woodward–Hoffman rules.