Rhodium-Catalyzed Asymmetric Intramolecular Hydroamination of Unactivated Alkenes
作者:Xiaoqiang Shen、Stephen L. Buchwald
DOI:10.1002/anie.200905402
日期:2010.1.12
One for the Rh(oad): The first rhodium‐catalyzed asymmetric intramolecular hydroamination of unactivated olefins was developed by using dialkylbiaryl phosphine ligands (see scheme; cod=1,5‐cyclooctadiene, Cy=cyclohexyl). A variety of 2‐methylpyrrolidines have been synthesized with high enantioselectivities.
Mild, Rhodium-Catalyzed Intramolecular Hydroamination of Unactivated Terminal and Internal Alkenes with Primary and Secondary Amines
作者:Zhijian Liu、John F. Hartwig
DOI:10.1021/ja710126x
日期:2008.2.6
We report a series of mild, rhodium-catalyzedhydroaminations of unactivated olefins with primary and secondary alkylamines to form the corresponding five- and six-membered products in excellent yields. The reactions form exclusively the product from hydroamination without competitive oxidative amination or olefin isomerization with catalysts generated from a biaryl dialkyl phosphine and an analogue