Synthesis of Azahelicene<i>N</i>-Oxide by Palladium-Catalyzed Direct CH Annulation of a Pendant (<i>Z</i>)-Bromovinyl Side Chain
作者:Eri Kaneko、Yuki Matsumoto、Ken Kamikawa
DOI:10.1002/chem.201302083
日期:2013.9.2
the twist: Azahelicene derivatives were synthesized in high yields by utilizing palladium‐catalyzedCH annulation reactions (see scheme). Functionalization at the C5 position in 6‐azahelicene by using palladium‐catalyzedCHarylation also gave coupling products in good yields. A tandem intra‐ and intermolecular double CH coupling reaction was performed to give a functionalized helicene in a one‐pot