Synthesis, Characterization, and Binding Properties of Novel Penta-Crown Ethers

Novel structures of penta-crown ethers were success­fully synthesized from trimethylolpropane triacrylate (TMPTA) with 2-aminomethyl crown ether; further reaction with 1-aza crown ethers, through Michael addition, furnished the newly synthesized host compounds of penta-crown ethers, which were characterized by 1H NMR, 13C NMR, and IR spectroscopy as well as FABMS and elemental analyses. The binding interaction of the new penta-crown ethers with alkali metal cations was studied through 1H NMR spectroscopy and UV spectroscopy.