Reactive Ketimino Radical Acceptors: Intermolecular Alkyl Radical Addition to Imines with a Phenolic Hydroxyl Group
作者:Hideto Miyabe、Yousuke Yamaoka、Yoshiji Takemoto
DOI:10.1021/jo052518x
日期:2006.3.1
Intermolecular carbon radical addition to the carbon−nitrogen double bond of ketimines was studied. In the study on the reactivity of various aldimines, we found that the aldimine 7 having a phenolic hydroxyl group shows an excellent reactivity toward nucleophilic carbon radicals. A remarkable effect of phenolic hydroxyl group is assumed to be the stabilization of intermediate aminyl radical provided by a
Enantioselective radical addition reactions to imines using binaphthol-derived chiral N-triflyl phosphoramides
作者:Sunggi Lee、Sunggak Kim
DOI:10.1016/j.tetlet.2009.02.136
日期:2009.7
Binaphthol-derived chiral phosphoric acid catalysts were applied to enantioselective radical addition reactions of imines and provided chiral amines with good enantioselectivities (73–84% ee). Furthermore, the enantioselectivities were not affected by either electronic properties of phenyl imines or radical precursors.