Palladium(0)-Catalyzed Arylative Dearomatization of Phenols
摘要:
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).
Palladium(0)-Catalyzed Arylative Dearomatization of Phenols
摘要:
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).
Concise Copper-Catalyzed Synthesis of Tricyclic Biaryl Ether-Linked Aza-Heterocyclic Ring Systems
作者:Paola Mestichelli、Matthew J. Scott、Warren R. J. D. Galloway、Jamie Selwyn、Jeremy S. Parker、David R. Spring
DOI:10.1021/ol4025259
日期:2013.11
A new method for the synthesis of tricyclic biaryl ether-linked ringsystems incorporating seven-, eight-, and nine-memberedring amines is presented. In the presence of catalytic quantities of copper(I), readily accessible acyclic precursors undergo an intramolecular carbon–oxygen bond-forming reaction facilitated by a “templating” chelating nitrogen atom. The methodology displays a broad substrate