Rhodium(I)-Catalyzed Arylation/Dehydroxylation of <i>tert</i>
-Propargylic Alcohols Leading to Tetrasubstituted Allenes
作者:Na Liu、Yanle Zhi、Jian Yao、Junhao Xing、Tao Lu、Xiaowei Dou
DOI:10.1002/adsc.201701263
日期:2018.2.15
alcohols and arylboroxines under rhodium catalysis. The reaction is assumed to proceed through an arylation/dehydroxylation process, which involves β‐hydroxide elimination of a β‐hydroxy alkenyl‐rhodium intermediate that is generated by regioselective arylrhodation of the tert‐propargylic alcohol. In addition, when enantioenriched propargylic alcohol was used to prepare optically active allene, high
叔炔丙基醇与芳基硼氧烷在铑催化下的反应选择性地获得了不同的四取代烯。假定该反应是通过芳基化/去羟基化过程进行的,该过程涉及通过β-羟基消除叔炔丙醇的区域选择性芳基铑化反应所产生的β-羟基烯基-铑中间体。此外,当使用富含对映体的炔丙醇制备旋光性丙二烯时,观察到了高效率的中心-轴向手性转移。米非司酮的高度非对映选择性转化也展示了当前方法在药物结构修饰中的应用。