Rhodium(III)-catalyzed C-H alkylation of heterocycles with allylic alcohols in water: A reusable catalytic system for the synthesis of β-aryl ketones
作者:Xiang Li、Feng Zhang、Dan Wu、Yirui Liu、Gan Xu、Yanli Peng、Zixiong Liu、Yuxin Huang
DOI:10.1016/j.tet.2018.10.074
日期:2018.12
rhodium(III)-catalyzed C-H alkylation of heterocycles with allylic alcohols has been achieved, which affords a series of β-aryl ketones in high yields. The reaction proceeds smoothly in water under air, and works well with heterocycles such as indoles, indolines, pyrroles and carbazoles. Notably, the expensive rhodium catalyst in water could be easily separated from the organic products, and reused for at least
已经实现了高效,绿色和可持续的方案,用于铑(III)催化的烯丙基醇对杂环的CH烷基化,从而以高收率提供了一系列β-芳基酮。该反应在空气中的水中能顺利进行,并与吲哚,二氢吲哚,吡咯和咔唑等杂环反应良好。值得注意的是,水中的昂贵铑催化剂可以轻松地与有机产物分离,并重复使用至少五次,而不会损失其催化活性和选择性,这是合成β-芳基酮的有前途,绿色且可持续的途径。据我们所知,这是在水中重复使用昂贵铑催化剂的第一个例子。