Fluorous Synthesis of Yuehchukene by α-Lithiation of Perfluoroalkyl-Tagged 1-(Arylsulfonyl)indole with Mesityllithium
作者:Hiroshi Naka、Yusuke Akagi、Kyoko Yamada、Tatsushi Imahori、Takahiro Kasahara、Yoshinori Kondo
DOI:10.1002/ejoc.200700525
日期:2007.10
protection of the indole ring nitrogen atom. Mesityllithium was found to be a suitable reagent for the α-lithiation of perfluoroalkyl-tagged 1-(arylsulfonyl)indole, and the fluorous synthesis of yuehchukene was accomplished efficiently using this method as a key step. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
由于缺乏合适的耐碱氟标签,锂化化学在氟合成中尚未得到很好的探索。我们最近开发了一种用于保护吲哚环氮原子的全氟烷基化芳基磺酰基标签。甲基锂被发现是全氟烷基标记的 1-(芳基磺酰基)吲哚的 α-锂化反应的合适试剂,并且使用该方法作为关键步骤有效地完成了 yuehchukene 的含氟合成。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)