A number of novel and synthetically important pyridyl/naphthyl/(diphenyl) methylseleno substituted alkanoic acids (20–25) have been synthesized using an efficient and operationally simple strategy. Starting substrates, ethyl pyridyl/naphthyl/(diphenyl) methylseleno substituted alkanoates (8–13) were easily prepared by treatment of ethyl chloroalkanoates 7 (a–c) with nucleophilic selenium reagent RSeNa+, generated from the ...