Cross-Dehydrogenative Coupling Reactions by Transition-Metal and Aminocatalysis for the Synthesis of Amino Acid Derivatives
作者:Jin Xie、Zhi-Zhen Huang
DOI:10.1002/anie.201004940
日期:2010.12.27
The direct approach: The title coupling reactions of N‐aryl glycine esters with unmodified ketones occurred smoothly in the presence of tert‐butyl hydroperoxide (TBHP) or 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) under mild conditions (see scheme). The oxidant used for CH activation determined the selectivity of the reactions for a particular type of ketone substrate.
直接方法:在叔丁基氢过氧化物(TBHP)或2,3-二氯-5,6-二氰基-1,4-苯醌(DDQ)的存在下,N-芳基甘氨酸酯与未修饰的酮的标题偶联反应平稳进行)在温和的条件下(请参阅计划)。用于CH活化的氧化剂决定了对于特定类型的酮底物的反应选择性。