Rhodium-Catalyzed Enantioselective Intramolecular Hydroacylation of Trisubstituted Alkenes
作者:Kirsten F. Johnson、Eugene A. Schneider、Brian P. Schumacher、Arkady Ellern、Joseph D. Scanlon、Levi M. Stanley
DOI:10.1002/chem.201603880
日期:2016.10.24
We report the first examples of transition metal‐catalyzed enantioselective alkene hydroacylations with 1,1,2‐trisubstituted alkenes. DFT and mechanistic studies are consistent with a reaction pathway for these rhodium‐catalyzed processes including intramolecular alkene hydroacylation and α‐epimerization to generate highly enantioenriched, polycyclic architectures. This reaction sequence enables the
我们报告了第一个用1,1,2-三取代烯烃进行过渡金属催化的对映选择性烯烃加氢酰化的例子。DFT和机理研究与这些铑催化过程的反应途径一致,这些过程包括分子内烯烃加氢酰化和α-表异构化以生成高度对映体富集的多环结构。该反应顺序使2-(环己-1-烯-1-基)苯甲醛的加氢酰化,以形成六氢-9- ħ芴-9-酮在中度到高的产率(68-91%)与高对映选择性(高达99%ee)和非对映选择性(通常> 20:1)。