O 2 -promoted allylic acetoxylation of alkenes: Assessment of “push” versus “pull” mechanisms and comparison between O 2 and benzoquinone
作者:Tianning Diao、Shannon S. Stahl
DOI:10.1016/j.poly.2014.06.038
日期:2014.12
palladium(II) complexes. Here, we assess the ability of O2 to promote similar reactions with a series of "unligated" π-allyl palladium(II) complexes (i.e., in the absence of ancillary phosphorus, nitrogen or related donor ligands). Stoichiometric and catalytic allyl acetate formation is observed under aerobic conditions with several different alkenes. Mechanistic studies are most consistent with a "pull" mechanism
Mechanistic investigations of bipyrimidine-promoted palladium-catalyzed allylic acetoxylation of olefins
作者:Bo-Lin Lin、Jay A Labinger、John E Bercaw
DOI:10.1139/v08-133
日期:2009.1.1
(bipyrimidine)Pd(OAc)2. No KIE is observed for the competition experiment between allylbenzene-d0 and allylbenzene-d5 (CD2=CDCD2C6H5), suggesting that allylic C–H activation is not rate-determining. Catalytic allylicacetoxylations of other terminal olefins as well as cyclohexene were also effected by (bipyrimidine)Pd(OAc)2.