Applying green chemistry principles to iron catalysis: mild and selective domino synthesis of pyrroles from nitroarenes
作者:Johannes Fessler、Kathrin Junge、Matthias Beller
DOI:10.1039/d3sc02879h
日期:——
An efficient and general cascade synthesis of pyrroles from nitroarenes using an acid-tolerant homogeneous iron catalyst is presented. Initial (transfer) hydrogenation using the commercially available iron–Tetraphos catalyst is followed by acid catalysed Paal–Knorr condensation. Both formic acid and molecular hydrogen can be used as green reductants in this process. Particularly, under transfer hydrogenation