Dearomatization of Biaryls through Polarity Mismatched Radical Spirocyclization
作者:Carlos R. Azpilcueta‐Nicolas、Derek Meng、Simon Edelmann、Jean‐Philip Lumb
DOI:10.1002/anie.202215422
日期:2023.2
A redox-neutral dearomatization transforms biaryls into complex spirocycles commonly found in bioactive natural products. This polaritymismatchedradicalspirocyclization tolerates diverse functional groups and is applied in the regioselective synthesis of 2,4- and 2,5-cyclohexadienones. The first synthesis of denobilone A, a cytotoxic plant metabolite, showcases its utility to access underexplored
Palladium(0)-Catalyzed Arylative Dearomatization of Phenols
作者:Sophie Rousseaux、Jorge García-Fortanet、Miguel Angel Del Aguila Sanchez、Stephen L. Buchwald
DOI:10.1021/ja203644q
日期:2011.6.22
The palladium-catalyzed arylative dearomatization of phenols to yield spirocyclohexadienone products in good to excellent yields has been developed. Preliminary results demonstrate that the formation of the spirocyclic all-carbon quaternary center can be accomplished with high levels of enantiocontrol (up to 91% ee).