Polymeric Schiff Bases. XVI. Alternative Syntheses for the Iminobenzylidene Polymers

Eight monomers, considered as suitable for the direct synthesis of iminobenzylidene polymers, , which pass through a tractable, fusible stage, have been synthesized. The polymerization of four of these monomers yielded insoluble, infusible brick-dust polymers. With the exception of p-CH 3 CONHC 6 H 4 CHO and p-C 6 H 5 CH˭NC 6 H 5 CH˭NC 6 H 5 , little advantage accrues to the use of these new monomers in the synthesis of the desired polymers, which appear to be best prepared by polymerizing the trimers of m- and p-aminobenzaldehyde in a solution of benzylideneaniline.