A fast, efficient and versatile route for the synthesis of 4,4’-diaminotriarylmethanes using Sr(DS)2 as a Lewis acid-surfactant-combined
catalyst, LASCs in the presence of N,N-dimethyl aniline and aryl aldehydes is reported. LASCs not only act as a Lewis acid to activate substrate
molecules, but also serve as a surfactant to form stable colloidal dispersion systems with organic substrates. Also, the others advantages of
LASCs are easy separation and recovery, high activity, selectivity, as a Lewis acid to activate the substrate molecules and as a surfactant to help to
solubilize the organic compounds in water. In this project a variety of aryl aldehydes were subjected to synthesize of 4,4’-diaminotriarylmethanes
in the presence of strontiumdodeceyl sulfate, N,N-dimethyl aniline under solvent free condition and at 100 °C%.