Synthesis and characterization of dimethacrylate monomer with high molecular weight for root canal filling materials

Abstract

A new dimethacrylate monomer 9,9′-bis[4-(2′-hydroxy-3′- methacryloyloxypropoxy)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. © 2006 by MDPI.