Controllable Regioselective Construction of Both Functional α-Methylene-β- and -γ-amino Acid Derivatives Through an Organocatalyzed Tandem Allylic Alkylation and Amination
A new controllable and regioselectiveallylicalkylation and amination reaction has been developed for the highly selective construction of compounds containing α-alkylidene-β-amino acid and α-methylene-γ-butyrolactam moieties. Furthermore, on the basis of this controllable strategy, multicomponent tandem reactions have also been accomplished. The subsequent transformations of the densely functionalized
Nucleophilic Phosphine-Catalyzed Intramolecular Michael Reactions of <i>N</i>-Allylic Substituted α-Amino Nitriles: Construction of Functionalized Pyrrolidine Rings via 5-<i>endo</i>-trig Cyclizations
作者:Da En、Gong-Feng Zou、Yuan Guo、Wei-Wei Liao
DOI:10.1021/jo500418s
日期:2014.5.16
Pyrrolidine rings are common moieties for pharmaceutical candidates and natural compounds, and the construction of these skeletons has received much attention. α-Amino nitriles are versatile intermediates in synthetic chemistry and have been widely used in the generation of multiple polyfunctional structures. Herein, a novel nucleophilic phosphine-catalyzed intramolecularMichaelreaction of N-allylic