Abstract
2-Substituted 1-arylamino-3-arylimino-1-propenes (III) were prepared by the reaction of N-lithio derivatives of 1-arylamino-3-arylimino-1-propenes (malonaldehyde dianil derivatives) (II) and substituted benzyl bromides. 2-Allyl and 2-(2, 4-dinitrophenyl) derivatives of II were prepared by the same method. However, the alkylation failed with less reactive alkyl halides such as ethyl iodide as alkylating agents. Hydrolysis of III afforded α-substituted β-(arylamino) acroleins (IV), which afforded 3-substituted quinolines (V) on heating with aluminium chloride.
