Catalytic Regio‐ and Enantioselective Protonation for the Synthesis of Chiral Allenes: Synergistic Effect of the Counterion and Water
作者:Qianchi Lin、Sujuan Zheng、Long Chen、Jin Wu、Jinzhao Li、Peizhi Liu、Shunxi Dong、Xiaohua Liu、Qian Peng、Xiaoming Feng
DOI:10.1002/anie.202203650
日期:2022.7.4
trisubstituted allenes with a diarylphosphinate moiety. A synergistic effect of the counterion and water enabled regio- and enantioselective protonation after [1,2]-phospha-Brook rearrangement. Intramolecular dearomatization of N-Ph-substituted products gave bridged polycyclic architectures through stereospecific Himbert reaction.
由手性 Sc III / N,N '-二氧化物复合物介导的 Pudovik 加成/[1,2]-磷酸-布鲁克重排导致具有二芳基亚膦酸酯部分的轴向手性三取代丙二烯。抗衡离子和水的协同作用使 [1,2]-phospha-Brook 重排后的区域选择性和对映选择性质子化成为可能。N -Ph 取代产物的分子内脱芳构化通过立体定向的 Himbert 反应产生桥接多环结构。