Silver-Mediated Intramolecular Friedel–Crafts-Type Cyclizations of 2-Benzyloxy-3-bromoindolines: Synthesis of Isochromeno[3,4-b] indolines and 3-Arylindoles
作者:Toshiki Yamashiro、Koji Yamada、Haruka Yoshida、Yutaro Tomisaka、Takahide Nishi、Takumi Abe
DOI:10.1055/s-0039-1690734
日期:2019.12
We disclose a silver-mediated intramolecular Friedel–Crafts-type cyclization of 2-benzyloxy-3-bromoindolines to afford an untapped family of isochromeno[3,4-b]indolines and 3-arylindoles, in which deformylative arylation of 2-(4-methoxybenzyloxy)-3-bromoindolines is reported for the first time. The isochromeno[3,4-b]indolines can be readily transformed into other heterocyclic moieties.
我们公开了 2-苄氧基-3-溴二氢吲哚的银介导的分子内 Friedel-Crafts 型环化,以提供未开发的异色基 [3,4-b] 二氢吲哚和 3-芳基吲哚家族,其中 2-(4 -甲氧基苄氧基)-3-溴二氢吲哚是首次报道。异色基[3,4-b]二氢吲哚可以很容易地转化为其他杂环部分。