Tandem addition-cyclization reactions of 2-alkynylbenzenamines with isocyanates catalyzed by PdCl2??

Organic & Biomolecular Chemistry Pub Date: 2008-10-15 DOI: 10.1039/B812015C

Abstract

Tandem addition-cyclization reactions of 2-alkynylbenzenamines with isocyanates catalyzed by palladium chloride are described. This reaction is performed in the presence of 10 mol% of palladium chloride in THF at 80 °C, which provides an efficient and practical route for the synthesis of 1,2-disubstituted indoles.

Graphical abstract: Tandem addition-cyclization reactions of 2-alkynylbenzenamines with isocyanates catalyzed by PdCl2
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