The synthesis of unique structures of tetra-crown ethers through Michael addition

Unique structures of tetra-crown ethers were successfully synthesized by the reaction of tetramethylolmethane tetraacrylate (TMMT) reacted with crown ethers containing primary amine functional group such as 2-aminomethyl crown ethers and 4-aminobenzo crown ethers; containing secondary amine group like 1-aza crown ethers through Michael reaction. The newly synthesized tetra-crown ethers were characterized by 1H NMR, 13C NMR, FAB mass spectrum, elemental analyses, IR, respectively.