The preparation of substituted quinoline derivatives through a Friedlander condensation reaction utilizing the ionic liquid [bmim][BF4] as the reaction medium and iron chloride hexahydrate (FeCl3·6H2O) as a catalyst is described. The advantages in using this method include its environmental friendliness, simple operating process in both mild and neutral reaction conditions, and good yields.Key words: ionic liquid, Friedlander reaction, quinoline derivatives, green chemistry.