Synthesis and modification of oxetane based oligomers with 3-ethoxypropylamine by focused microwave irradiation

Synthesis of oligomers was achieved via condensation of several bisphenol sodium salts in water with 3,3′-bis(chloromethyl)oxetane in nitrobenzene under phase transfer catalysis with tetrabutyl ammonium bromide. All proceedings were developed both by classical and under focused microwave irradiation with complete experimental parameters control. The rigid oxetane chain was then opened partially with 3-ethoxypropylamine in order to generate some specific properties. Higher substitution was obtained by microwave activation in the presence of the zinc chloride which is well known to react as microwave absorber.