Synthesis of Highly Substituted Pyrroles via a Multimetal-Catalyzed Rearrangement−Condensation−Cyclization Domino Approach
作者:Jörg T. Binder、Stefan F. Kirsch
DOI:10.1021/ol060664z
日期:2006.5.1
[reaction: see text] In a convenient one-pot process, easily accessedpropargyl vinyl ethers and aromatic amines are effectively converted into tetra- and pentasubstituted 5-methylpyrroles which can further be transformed into 5-formylpyrroles via IBX-mediated oxidation. The cascade reaction proceeds through a silver(I)-catalyzed propargyl-Claisen rearrangement, an amine condensation, and a gold(I)-catalyzed