Metal‐Free Hydrosilylation of Ketenes with Silicon Electrophiles: Access to Fully Substituted Aldehyde‐Derived Silyl Enol Ethers
作者:Avijit Roy、Martin Oestreich
DOI:10.1002/chem.202100877
日期:2021.6.4
catalysts is reported. The boron Lewis acid tris(pentafluorophenyl)borane accelerates the slow uncatalyzed reaction of ketenes and hydrosilanes, thereby providing a convenient access to the new class of β,β-di- and β-monoaryl-substituted aldehyde-derived silyl enol ethers. Yields are moderate to high, and Z configuration is preferred. The corresponding silyl bis-enol ethers are also available when using
报道了由主族催化剂促进的烯酮氢化硅烷化的研究很少。硼路易斯酸三(五氟苯基)硼烷加速了烯酮和氢硅烷的缓慢未催化反应,从而为获得新型 β,β-二-和 β-单芳基取代的醛衍生的甲硅烷基烯醇醚提供了便利。产量中等至高,Z型配置是首选。当使用二氢硅烷时,也可以使用相应的甲硅烷基双烯醇醚。相关的三苯甲基阳离子引发的氢化硅烷化涉及甲硅烷离子的自我再生,效果要差得多。