Diastereo- and Enantioselective 1,6-Conjugate Addition of 2-Azaarylacetamides to <i>para</i>-Quinone Methides
作者:Yan Wang、Kaixuan Wang、Weidi Cao、Xiaohua Liu、Xiaoming Feng
DOI:10.1021/acs.orglett.9b02215
日期:2019.8.2
A chiral Mg(II)/N,N′-dioxide complex was found to be highly effective in promoting the diastereo- and enantioselective 1,6-conjugate addition of various azaarylacetamides to p-quinone methides under mild reaction conditions. Various chiral azaarene derivatives containing gem(1,1)-diaryl skeletons were obtained in good yields, dr, and excellent ee values. Meanwhile, on the basis of insight gained from
发现在温和的反应条件下,手性Mg(II)/ N,N'-二氧化物络合物在促进各种氮杂芳基乙酰胺向对苯醌甲基化物的非对映选择性和对映选择性1,6-共轭加成方面非常有效。获得各种具有宝石(1,1)-二芳基骨架的手性氮杂芳烃衍生物,具有良好的产率,dr和优异的ee值。同时,根据控制实验的见识以及Mg(II)/ N,N'-二氧化物配合物和产物的单晶结构,提出了可能的过渡态来解释配位和形成的起源。立体感应。