Organocatalytic Remote Stereocontrolled Synthesis of Tetrasubstituted Allenes via Asymmetric 1,8‐Addition of Propargylic Aza‐<i>p</i>‐Quinone Methides
作者:Zhibin Yue、Yan Xia、Boming Shen、Chang Liu、Peiyuan Yu、Pengfei Li、Wenjun Li
DOI:10.1002/adsc.202301286
日期:2024.3.8
An organocatalytic remote stereocontrolled 1,8-conjugated addition of in situ formed propargylic aza-p-quinone methides from α-(4-aminophenyl) propargylic alcohols and indole-2-carboxylates was developed, affording axially chiral tetrasubstituted allenes in 62-99% yield with 52-99% ee. The synthetic strategy not only enriches the chemistry of aza-p-quinone methides, but also provides an alternative