Chiral phosphoric acid works together with HoveydaâGrubbs II catalyst enabling highly efficient synthesis of enantioenriched tetrahydro-β-carboline (up to 95% yield, 90% ee) through an olefin isomerization/PictetâSpengler cascade reaction via sequential catalysis.
手性
磷酸与Hoveyda–Grubbs II催化剂协同作用,实现了通过顺序催化的烯烃异构化/皮克特–斯宾格勒级联反应,高效合成富含对映体的四氢-β-
喹啉(产率高达95%,对映体过量90%)。