InCl<sub>3</sub>/Me<sub>3</sub>SiBr-Catalyzed Direct Coupling between Silyl Ethers and Enol Acetates
作者:Yoshiharu Onishi、Yoshihiro Nishimoto、Makoto Yasuda、Akio Baba
DOI:10.1021/ol200875m
日期:2011.5.20
A combined Lewis acid catalyst of InCl3 and Me3SiBr promoted the direct use of enol acetates in the coupling with low-reactive silyl ethers, in which functional groups including ketones and aldehydes survived. Sterically hindered silyl ethers such as ROSiEt3, ROSiPh3, ROSit-BuMe2, and ROSii-Pr3 were also applicable.
InCl 3和Me 3 SiBr的路易斯酸催化剂的组合促进了烯醇乙酸酯在与低反应性甲硅烷基醚的偶联中的直接使用,其中包括酮和醛的官能团得以幸存。也可使用受阻位的甲硅烷基醚,如ROSiEt 3,ROSiPh 3,ROSi t- BuMe 2和ROSi i- Pr 3。