Sulfoxide-TFAA and nucleophile combination as new reagent for aliphatic C–H functionalization at indole 2α-position
作者:Masanori Tayu、Kazuhiro Higuchi、Masato Inaba、Tomomi Kawasaki
DOI:10.1039/c2ob26944a
日期:——
Aliphatic CâH functionalization at indole 2α-position mediated by acyloxythionium species 1 generated from sulfoxide and acid anhydride has been developed. The combination of sulfoxide and TFAA with O-, N- and C-nucleophiles enabled introduction of various substituents in a one-pot procedure. Especially on utilizing DMSO, the combination provided a practical and efficient method for the synthesis of a wide range of 2α-substituted indoles.
已开发出通过由亚砜和酸酐生成的酰氧硫阳离子物种1介导的吲哚2α位的脂肪族C–H官能化。亚砜与TFAA结合使用O、N和C亲核试剂,使得在一个反应步骤中引入各种取代基。特别是使用DMSO的组合,提供了一种实用而高效的方法,能够合成多种2α取代的吲哚。