Synthesis of 3-iminoindole derivatives by the reactions of aromatic isocyanides with N,N-dialkylbenzylamines

The reaction of N,N-dialkylbenzylamines with aromatic isocyanides leading to 2-dialkylamino-3-aryliminoindole derivatives with the subsequent formation of zwitter ionic indolates has been discovered; the structures of final products have been confirmed by X-ray analysis.