Dual Catalytic Decarboxylative Allylations of α-Amino Acids and Their Divergent Mechanisms
作者:Simon B. Lang、Kathryn M. O'Nele、Justin T. Douglas、Jon A. Tunge
DOI:10.1002/chem.201503644
日期:2015.12.14
The room temperature radical decarboxylative allylation of N‐protected α‐amino acids and esters has been accomplished via a combination of palladium and photoredox catalysis to provide homoallylic amines. Mechanistic investigations revealed that the stability of the α‐amino radical, which is formed by decarboxylation, dictates the predominant reaction pathway between competing mechanisms.
N保护的α-氨基酸和酯在室温下进行自由基脱羧烯丙基化反应,是通过钯和光氧化还原催化作用的组合来实现的,以提供均胺基胺。机理研究表明,由脱羧作用形成的α-氨基自由基的稳定性决定了竞争机制之间的主要反应途径。