An organocatalyzed enantioselective protonation sequence that starts from readily available disubstituted Meldrum's acid derivatives and phenols, proceeds under phase‐transfer‐catalytic (PTC) conditions, and provides chiral nonracemic 2‐aryl propionic esters in good isolated yields with up to 70 % ee is presented. The usefulness of this method was demonstrated by the synthesis of enantioenriched (S)‐ibuprofen
一个organocatalyzed对映选择性质子化序列,从容易获得的二取代的麦德鲁姆酸衍
生物与
酚类,相转移催化(
PTC)条件下进行,并开始提供手性非外消旋-芳基2与高达70%的良好的分离收率
丙酸酯 EE呈现。富含对映体的(S)-
布洛芬的合成证明了该方法的有效性。