3-重氮吲哚-2-亚胺与碳-碳引发的邻羟基芳基亚胺基的亲电环化反应:3-吲哚基-4 H-铬基-4-酮和吡啶基的合成[2,3- b:6,5- b ']二吲哚
摘要:
铜(II)催化的邻羟基芳亚胺酮和3-重氮吲哚-2-亚胺之间的亲电子环化反应提供了3-吲哚基-4 H-铬4-4-酮,具有中等收率和良好的收率,具有广泛的底物范围。几个吡啶并[2,3- b:6,5- b ']二吲哚和一个吡嗪并[2,3- b:5,6- b ']二吲哚也获得如在某些情况下,副产物以及它们的光物理性质进行测试。吡啶并[2,3- b:6,5- b ']二吲哚展出溶剂依赖性发射,而吡嗪并[2,3- b:5,6- b ']二吲哚发射用在环己烷中25.6%的量子产率强烈发光。
Expedient chemoselective and catalyst-free synthesis of 3,3-difluorochroman-4-ones from o-hydroxyarylenaminones and Selectfluor
作者:Jian Xu、Zhijie Kuang、Qiuling Song
DOI:10.1016/j.cclet.2017.10.027
日期:2018.6
An expedient and mild strategy for the synthesis of unconventional 2-(dimethylamino)-3,3-difluorochroman-4-one derivatives from o-hydroxyarylenaminones and Selectfluor was developed at room temperature under catalyst-free conditions. This method showed excellent chemoselectivity and great functional groups tolerance. (C) 2017 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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