Synthesis and Characterization of Dimethacrylate Monomer with High Molecular Weight for Root Canal Filling Materials

摘要

A new dimethacrylate monomer 9,9′-bis[4-(2′-hydroxy-3′-methacryloyloxy- propoxy)phenyl] fluorene (>3) with a molecular weight of 634 was synthesized in 51.4% yield by addition of a glycidyl ether group to 9,9′-bis(4-hydroxyphenyl) fluorene (>1) by the reaction of compound >1 with epichlorohydrin, and then introducing the methacrylate moiety by the reaction of the epoxy group with methacrylic acid. The structure of monomer >3 was confirmed by FT-IR, ¹H-NMR, mass spectra and elemental analysis.