Contra-thermodynamic Olefin Isomerization by Chain-Walking Hydrofunctionalization and Formal Retro-hydrofunctionalization
作者:Steven Hanna、Trevor W. Butcher、John F. Hartwig
DOI:10.1021/acs.orglett.9b02695
日期:2019.9.6
We report a contra-thermodynamic isomerization of internal olefins to terminal olefins driven by redox reactions and formation of Si-F bonds. This process involves chain-walking hydrosilylation of internal olefins and subsequent formal retro-hydrosilylation. The process rests upon the high activities of platinum hydrosilylation catalysts for isomerization of metal alkyl intermediates and a new, metal-free
我们报告了由还原反应和形成Si-F键驱动的内部烯烃对末端烯烃的反热力学异构化。该过程涉及内部烯烃的链走氢化硅烷化和随后的正式逆向氢化硅烷化。该方法取决于铂氢化硅烷化催化剂对金属烷基中间体的异构化的高活性,以及基于烷基硅烷向烯烃转化的无金属新方法。通过这种方法,将1,2-二取代和三取代的烯烃转化为末端烯烃。