most important structural motifs. Herein, we disclose an enantioselective N-heterocyclic carbene catalyzed β-arylation/cyclization of α-bromoenals with 3-aminophenols under mild conditions. The protocol allows for the rapid preparation of 4-aryl-3,4-dihydrocoumarins in acceptable yields with good enantioselectivities. The products of this reaction could be converted into chiral diarylpropanoic acid derivatives
4-芳基-3,4-二氢
香豆素是最重要的结构基序之一。在此,我们公开了在温和条件下对映选择性N-杂环卡宾催化α-
溴烯醛与
3-氨基苯酚的β-芳基化/环化。该方案允许以可接受的产率快速制备 4-芳基-3,4-二氢
香豆素,并具有良好的对映选择性。该反应的产物可以转化为手性二芳基
丙酸衍
生物,而不损害对映选择性。