A General Method for the Synthesis of 2,2-[60]Fullerenoalkanals: The Reaction of [60]Fullerene with 2-Bromoenol Silyl Ethers
作者:Kazuhiko Saigo、Hiroshi Ito、Yusuke Kishi、Yohei Nishikawa、Tomonori Tada、Yasuhiro Ishida
DOI:10.1055/s-0030-1258112
日期:2010.7
synthesized by the fluoride ion-mediated reaction of [60]fullerene with 2-bromoenol silyl ethers, which were easily prepared by 2-bromination of the corresponding enol silyl ethers. The reactivity differed significantly depending on the stability of the 2-bromoenol silyl ethers. High yield and selectivity were achieved for the reaction of 2-bromoenol trimethylsilyl ethers under mild conditions (KF/18-crown-6-ether)
通过氟离子介导的 [60] 富勒烯与 2-溴烯醇甲硅烷基醚的反应合成了五种 2,2-[60] 富勒烯烷醛,该反应很容易通过相应烯醇甲硅烷基醚的 2-溴化制备。反应性显着不同,这取决于 2-溴烯醇甲硅烷基醚的稳定性。2-溴烯醇三甲基甲硅烷基醚在温和条件下(KF/18-crown-6-ether)的反应实现了高产率和选择性。另一方面,稳定的 2-溴烯醇叔丁基二甲基甲硅烷基醚的反应需要使用更具反应性的四丁基氟化铵作为氟离子源。