Efficient Synthesis of 5,6-Dihydroxyindole Dimers, Key Eumelanin Building Blocks, by a Unified <i>o</i>-Ethynylaniline-Based Strategy for the Construction of 2-Linked Biindolyl Scaffolds
作者:Luigia Capelli、Paola Manini、Alessandro Pezzella、Alessandra Napolitano、Marco d’Ischia
DOI:10.1021/jo901259s
日期:2009.9.18
A unified convenient strategy for the synthesis of 5,6-dihydroxyindole-derived 2,7′-, 2,2′-, and 2,3′-biindolyls is reported, which is based on proper manipulation of key o-ethynylaniline precursors. By the same methodology 5,6-diacetoxy-7-iodoindole can also be obtained in good yield.
报道了一种基于5,6-二羟基吲哚衍生的2,7'-,2,2'-和2,3'-二吲哚合成方便的统一策略,该策略基于对关键的邻乙炔基苯胺前体的正确处理。通过相同的方法,也可以良好的产率获得5,6-二乙酰氧基-7-碘吲哚。