Pd-catalyzed sequential C-C bond formation and cleavage: evidence for an unexpected generation of arylpalladium(II) species.
A Pd(II)-catalyzed reaction engaging alkenyl β-keto esters is reported that leads to the formation of 1-naphthols and an unexpected generation of arylpalladium(II) species. Interception of the in situ generated arylpalladium(II) species in a Mizoroki-Heck reaction, together with additional mechanistic studies, provided strong evidence in support of the first aromatization-driven β-carbon elimination process. A single Pd catalyst served to promote a series of both C-C bond forming and cleavage events in an unprecedented manner.
Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 133-791, Korea. sowony73@hanyang.ac.kr
So Won
SW
Youn
Byung Seok
BS
Kim
Arun R
AR
Jagdale