Friedel-Crafts 3-(2-Bromobenzoylation) of Indoles and Intramolecular Direct Arylation: An Efficient Route to Indenoindolones
作者:Sankar Guchhait、Maneesh Kashyap
DOI:10.1055/s-0031-1289663
日期:2012.2
Friedel-Crafts reaction of 2-bromobenzoyl chlorides with indoles to give 3-(2-bromobenzoyl)indoles and their palladium-catalyzed intramolecular direct arylation to give indenoindolones, has been developed. 3-(2-Bromobenzoyl)indoles were crucial intermediates; the method was successful with N-unprotected or N-protected indoles. This approach affords a convenient preparation of diverse substituted and functionalized
已经开发出一种有效的两步法,包括2-溴苯甲酰氯与吲哚的弗瑞德-克来福特反应,得到3-(2-溴苯甲酰基)吲哚,以及它们的钯催化的分子内直接芳基化,得到茚并吲哚酮。3-(2-溴苯甲酰基)吲哚是关键的中间体。该方法适用于N-未保护或N-保护的吲哚。该方法提供了从容易获得的起始原料以高收率到高收率方便地制备各种取代的和官能化的茚并吲哚酮的方法。通过该合成可以容易地掺入通常整合到生物活性化合物中的几个部分。 酰化-芳基化-催化-偶联-杂环-吲哚-路易斯酸-钯