A highly efficient palladacycle catalyst for hydrophenylation of C-, N-, and o-substituted bicyclic alkenes under aerobic condition

A new phosphine-free palladacycle catalyst 4 was prepared from benzyl oxazoline in high yield and fully characterized. With it as catalyst, hydrophenylation reactions of a wide range of bicyclic alkenes, not only norbornene and norbornadiene but also oxa-