A novel, efficient synthesis of N-aryl pyrroles via reaction of 1-boronodienes with arylnitroso compoundsElectronic supplementary information (ESI) available: Experimental details, characterisation data, 1H and 13C NMR spectra. See DOI: 10.1039/c3cc42227e

A one-pot hetero-DielsAlder/ring contraction cascade is presented from the reaction of 1-boronodienes and arylnitroso derivatives to derive N -arylpyrroles in moderate to good yields (up to 82%). A one-pot hetero-DielsAlder/ring contraction cascade is presented from the reaction of 1-boronodienes and arylnitroso derivatives to derive N -arylpyrroles in moderate to good yields (up to 82%).