(Z)-1-(3,5-Dichloro-2H-pyrrol-2-ylidene)-N,N-dimethylmethanamine

The Vilsmeier–Haack reaction is a convenient method for the formylation of electron-rich aromatic compounds. However, this interaction sometimes gives specific side products. We report the isolation and structural characterization of a novel compound (Z)-1-(3,5-dichloro-2-pyrrolylidene)-N,N-dimethylmethanamine obtained as a side product during the formylation of 2-chloropyrrole. The product was characterized using NMR spectroscopy and X-ray crystallography.