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
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
Controllable Lewis Base Catalyzed Michael Addition of α-Aminonitriles to Activated Alkenes: Facile Synthesis of Functionalized γ-Amino Acid Esters and γ-Lactams
作者:Zhong-Lin Wei、Wei-Wei Liao、Ze-Ying He、Ho-Chol Jang、Le-Sheng Teng
DOI:10.1055/a-1337-4684
日期:2021.5
A novel protocol for the synthesis of functionalized γ-amino acid esters and γ-lactams through a controllable Lewis base catalyzed Michael addition of α-aminonitriles to simple activated alkenes has been developed. The scope, versatility, and efficiency of the process were demonstrated.
A carbon dioxide-promoted three-component Strecker reaction
作者:Ruslan V. Fauziev、Roman E. Ivanov、Ilya V. Kuchurov、Sergei G. Zlotin
DOI:10.1039/d1gc03161a
日期:——
but also as a reaction promoter via in situ formation of carbonic acid which provides a gradual release of the true cyanating agent (HCN) from available KCN. The reaction conditions (pressure, temperature, and concentrations of reagents) were optimized, and various aromatic and aliphatic amines and aldehydes were transformed into valuable α-amino nitriles including prospective pharmacological substances