Design, synthesis and application of a new type of bifunctional Le-Phos in highly enantioselective γ-addition reactions of N-centered nucleophiles to allenoates
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 nitrogennucleophiles 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.
Design, synthesis and application of a new type of bifunctional Le-Phos in highly enantioselective γ-addition reactions of N-centered nucleophiles to allenoates
作者:Haile Qiu、Xiaofeng Chen、Junliang Zhang
DOI:10.1039/c9sc04073k
日期:——
A novel class of bifunctional cyclic phosphine catalysts (Le-Phos) is reported, which showed good performances in enantioselective γ-addition reactions of N-centered nucleophiles and allenoates under mild conditions.