One pot synthesis of bis (phenylimino dihydro thiazolyl-2<i>H</i>-chromene) derivatives

A novel series of bis (phenylimino dihydro thiazolyl-2-<i>H</i>-chromene) derivatives have been synthesized via an efficient one pot multicomponent approach involving different substituted of 3-(2-bromoacetyl)-2<i>H</i>-chromen-2-ones, phenylisothiocyanates and para phenylenediamine in presence of DMF solvent. The target compounds were obtained in a shorter reaction time through simple reaction work up with good yields. All the synthesized products were characterized by thier spectral and analytical data like IR, ¹H NMR, ¹³C NMR, Roesy and Mass spectral data.