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 couplingreactions 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.