Rhodium-Catalyzed C−H Functionalization of Indoles with Diazo Compounds: Synthesis of Structurally Diverse 2,3-Fused Indoles
作者:Mengying Gao、Yaxi Yang、Hua Chen、Bing Zhou
DOI:10.1002/adsc.201700974
日期:2018.1.4
functionalization of indoles with diazo compounds, followed by intramolecular nucleophilic addition to C=O or C=C bonds, is reported for divergent synthesis of 2,3‐fused indoles. Besides acceptor/acceptor diazo compounds, donor/acceptor diazo compounds are broadly tolerated, giving various 2,3‐fused indoles with perfect diastereocontrol. Notably, a selective C−H dialkylation reaction at C2 and C7 position of
据报道,铑通过重氮化合物催化吲哚的C2-H官能化,然后向C = O或C = C键分子内亲核加成,从而合成了2,3稠合的吲哚。除受体/受体重氮化合物外,对受体/受体重氮化合物的耐受性也很广,可为各种2,3稠合的吲哚提供完美的非对映控制。值得注意的是,通过简单地改变反应条件,在吲哚的C 2和C 7位置处的选择性CH 2-二烷基化反应也已经发展。这种对环境无害的转化会在温和的条件下进行,从而使二氮成为唯一的副产物。