A convenient synthesis of highly functionalized, alpha,alpha-disubstituted amino acid amide derivatives has been accomplished by using cyclic and acyclicketones as the carbonyl inputs in the Ugi multicomponent reaction. An application of this extension of the Ugi reaction to the synthesis of alpha,alpha-divinyl amino acids that may be cyclized via ring-closing metathesis to provide highly substituted
通过使用环状和无环酮作为 Ugi 多组分反应中的羰基输入,可以方便地合成高度官能化的 α,α-二取代氨基酸酰胺衍生物。描述了 Ugi 反应的这种扩展在合成 α,α-二乙烯基氨基酸中的应用,该氨基酸可以通过闭环复分解进行环化以提供高度取代的吡咯烷。