Palladium-catalyzed coupling reaction of amino acids (esters) with aryl bromides and chlorides
作者:Fangfang Ma、Xiaomin Xie、Lina Ding、Jinsheng Gao、Zhaoguo Zhang
DOI:10.1016/j.tet.2011.09.109
日期:2011.12
showed high efficiency for the coupling reactions of amino acids and inactive aryl halides to give N-aryl amino acids. Under the catalytic conditions, not only α-amino acids, but also β-, γ-, and δ-amino acids have been coupled with aryl chlorides in moderate to high yields; in the case of optically pure β-amino acids as substrates, the optical purities of the coupling products retained.
庞大且富电子的MOP型配体和Pd(dba)2组合对氨基酸与非活性芳基卤化物的偶合反应显示出N-芳基氨基酸的高效反应。在催化条件下,不仅α-氨基酸,而且β-,γ-和δ-氨基酸都以中等至高收率与芳基氯偶合。在光学纯的β-氨基酸作为底物的情况下,保留了偶联产物的光学纯度。