Protocols for the Syntheses of 2,2′-Bis(indolyl)arylmethanes, 2-Benzylated Indoles, and 5,7-Dihydroindolo[2,3-<i>b</i>]carbazoles
作者:Ferruh Lafzi、Haydar Kilic、Nurullah Saracoglu
DOI:10.1021/acs.joc.9b02124
日期:2019.9.20
The electrophilic substitution reaction of 4,7-dihydroindole with aryl-aldehydes as an electrophilic partner followed by an oxidation step to deliver 2,2′-bis(indolyl)arylmethanes was studied for the first time. The reaction afforded regioselectivity at the 2,2′-positions of indole in an operationally simple and inexpensive procedure with a variety of substrates. To the best of our knowledge, this
首次研究了4,7-二氢吲哚与芳基醛作为亲电伙伴的亲电取代反应,然后进行氧化步骤以生成2,2'-双(吲哚基)芳基甲烷。该反应在操作简单且廉价的过程中使用多种底物在吲哚的2,2'-位提供了区域选择性。据我们所知,这是以无取代基方式获得的2,2'-双(吲哚基)芳基甲烷的第一组实例。还报道了一种从二吡咯甲烷到相应的2-苄基吲哚的简便方法。另外,将2,2'-双(吲哚基)芳基甲烷转化为5,7-二氢吲哚并[2,3- b ]咔唑。
Decomposition acido-catalysee d'azides tertiaires benzocyclobuteniques. Nouvelle methode de synthese du noyau indolique par extension du cycle
作者:G. Adam、J. Andrieux、M. Plat
DOI:10.1016/s0040-4020(01)96432-4
日期:1985.1
Treatment of benzocyclobutenols substituted on the functional carbon by the NH3BF3-Et2O reagent allows the synthesis of the corresponding tertiary azides. The latter by acid-catalysed breakdown, lead to 2-substituted indoles. A similar result is obtained by treating directly the alcohols with hydrazoic add and concentrated sulfuric acid. This new route to indole nucleus is also extended to the synthesis