Synthesis of novel polyamides starting from ferulic acid dimer derivative

Abstract

Abstract Novel polyamides containing cyclobutane in the main chain were synthesized from a dimmer that was obtained by topochemical [2 + 2] photo-dimerization of O-acetylferulic acid crystals, using two different methods: (1) The dimer was converted into a three-dimensional network polyphenylester on heating, eliminating acetic acid. The network polymer was reacted with a diamine to afford a linear polyamide. (2) The same dimer chloride was submitted to an interfacial polycondensation with a diamine. Although the first method is a unique one to convert a network polymer to a linear polymer, the second method was found to be more practical from the viewpoints of both preparation process and the quality of the polymer obtained. These synthetic procedures into the polyamides and characterization of resulted polymers are described. The phenolic polymer showed an anti-oxidant nature when reacted with a free radical DPPH. Keywords: O-ACETYLFERULIC ACIDTOPOCHEMICAL 2 2 ADDITIONTHREE-DIMENSIONAL NETWORK POLYMERPHOTO-DIMERIZATIONCYCLOBUTANE POLYMERPOLYAMIDESANTI-OXIDIZER