compounds: The title reaction of β‐ketoamides, acrolein, and aminophenols, catalyzed by a bifunctional thiourea‐tertiary amine organocatalyst, enables the preparation of an enantioenriched diazabicyclo[2.2.2]octanone (2,6‐DABCO) scaffold. The chemoselective reaction sequence installs five new bonds and three stereocenters, two of which are contiguous tetrasubstituted centers, with excellent yields and high
三星级化合物:双功能
硫脲-叔胺有机催化剂催化的β-酮酰胺,
丙烯醛和
氨基
酚的标题反应能够制备对映体富集的二
氮杂双环[2.2.2]辛酮(2,6-
DABCO)骨架。
化学选择性反应序列安装了五个新键和三个立体中心,其中两个是连续的四取代中心,具有出色的收率和高
水平的立体控制。MS =
分子筛。