Palladium-Catalyzed Synthesis of 2,3-Disubstituted 5-Azaindoles via Heteroannulation Reaction and of 2-Substituted 5-Azaindoles through Domino Sila-Sonogashira/5-Endo Cyclization
作者:Marion Livecchi、Géraldine Calvet、Frédéric Schmidt
DOI:10.1021/jo300481s
日期:2012.6.1
A general and efficient procedure for the synthesis of 2,3-disubstituted 5-azaindoles through the palladium-catalyzed heteroannulation of 4-acetamido-3-iodopyridines and diaryl-, dialkyl-, or arylalkylalkynes is described along with a study of the reaction regioselectivity. The preparation of 2-monosubstituted 5-azaindoles via sila-Sonogashira/5-endo cyclization is also reported. These methods allowed
描述了通过钯催化的4-乙酰氨基-3-碘吡啶和二芳基,二烷基或芳基烷基炔烃的异环合成2,3-二取代的5-氮杂吲哚的一般有效方法,以及对反应区域选择性的研究。 。还报道了通过sila-Sonogashira / 5-endo环化制备2-单取代的5-氮杂吲哚。这些方法使我们能够以高收率制备36种不同取代的5-氮杂吲哚。