Catalytic Asymmetric CN Bond Formation: Phosphine-Catalyzed Intra- and Intermolecular γ-Addition of Nitrogen Nucleophiles to Allenoates and Alkynoates
作者:Rylan J. Lundgren、Ashraf Wilsily、Nicolas Marion、Cong Ma、Ying Kit Chung、Gregory C. Fu
DOI:10.1002/anie.201208957
日期:2013.2.25
Pin the amine on the gamma: A new method has been developed for the γ‐addition of nitrogen nucleophiles to γ‐substituted alkynoates or allenoates through intra‐ and intermolecular processes that are catalyzed by spirophosphine 1 (see scheme). An asymmetric version of this reaction affords enantioenriched pyrrolidines, indolines, and γ‐amino‐α,β‐unsaturated carbonyl compounds.
将胺固定在 γ 上:已经开发出一种新方法,通过由螺膦1催化的分子内和分子间过程,将氮亲核试剂 γ 加成到 γ 取代的炔酸酯或烯丙酸酯上(参见方案)。该反应的不对称形式提供了对映体富集的吡咯烷、二氢吲哚和 γ-氨基-α,β-不饱和羰基化合物。