An atom and step economic synthesis of multifunctional N,N'-(2-alkyl-1,3-diarylprop-1-ene-1,3-diyl)diacetamides employing a novel tandem aldol double Ritter-type multicomponent one-pot reaction between aromatic aldehydes, enolizable ketones, and a nitrile source in the presence of 20 mol % of BF3 center dot Et2O is described. The reaction boosts operational simplicity, shortens reaction time, and has a simple work-up.