描述了由相应的吲哚基甲醇制备双(吲哚基甲基)醚的设计、原型合成、分离和表征。该方法涉及非常温和的条件,并且对吲哚基甲醇(N-吸电子基团和N-给电子基团)表现出良好的范围。两种电子不同的吲哚甲醇之间的交叉醚化也被证明可产生不对称醚。首次通过实验和1 H NMR 分析证明了双(吲哚基甲基)醚在从吲哚基甲醇形成双(吲哚基)甲烷中的中间作用。
Synthesis of polysubstituted cyclopenta[b]indoles via relay gold(<scp>i</scp>)/Brønsted acid catalysis
作者:Seema Dhiman、S. S. V. Ramasastry
DOI:10.1039/c4cc08174a
日期:——
various polysubstituted cyclopentannulated indoles from easily accessible 1-(2-aminophenyl)prop-2-ynols and readily available 1,3-dicarbonyls has been developed. In an unprecedented event, the intermediate 2-indolylmethyl cations undergo the cation-Ene reaction with various 1,3-dicarbonyls followed by an intramolecular Friedel-Crafts-type reaction generating functionalized cyclopenta[b]indoles.