Chemo‐ and Regioselective Palladium‐Catalyzed Oxycyclization Reactions of Allendiols: Preparation of Five‐, Six‐, and Eight‐Membered Cycles

Positive discrimination: Chemo- and regioselective palladium-catalyzed cycloetherification of allendiols, namely beta,gamma- and gamma,delta-allendiols, may occur by judicious choice of palladium-catalyzed conditions owing to their potential ability to discriminate between both nucleophilic sites (see scheme).