Synthesis of indanones by sequential Heck-reduction–cyclization–alkylation (HRCA) reactions
作者:Luma Nassar-Hardy、Sandy Fabre、Atef M. Amer、Eric Fouquet、François-Xavier Felpin
DOI:10.1016/j.tetlet.2011.11.042
日期:2012.1
A simple and efficient synthesis of indanones, bearing a quaternary carbon centre, has been developed. The method features, in a one-pot process, the use of a multi-task palladium catalyst for the sequential Heck-reduction reactions, followed by a base-mediated cyclization–alkylation sequence. This methodology, called Heck-reduction–cyclization–alkylation (HRCA), is carried out under mild and simple
已经开发了具有四级碳中心的茚满酮的简单有效的合成方法。该方法的特点是,在一锅法中,使用多任务钯催化剂进行顺序的Heck还原反应,然后进行碱介导的环化-烷基化反应。这种称为Heck还原-环化-烷基化(HRCA)的方法,是在温和且简单的实验条件下,使用廉价的试剂进行的。通过使用重氮盐使温和条件成为可能,该重氮盐允许在中等温度(40°C)下在无配体的条件下进行Heck偶联。