Pd(II)‐Catalyzed Formal [5 + 2]‐Carbocyclization of ortho‐Aryl‐Substituted Arylaldehydes with Allylic Alcohols

Abstract A Pd(II)‐catalyzed formal [5+2] coupling‐cyclization of 2‐arylbenzaldehydes with allylic alcohols has been developed. The method provides an efficient approach to access diaryl‐fused cycloheptene skeletons via traceless α‐amino acid‐assisted C sp 2 −H activation process.