NMR study of poly(phthalidylidenearylene)s

Abstract

The structure of poly(phthalidylidenearylene)s, synthesized by electrophilic substitution reactions, was studied using 'H and 13C NMR spectroscopy. Homopolycondensation of 3-aryl-3chlorophthalides 1 ad in nitrobenzene leads to para-substituted linear polymers 2ad, whereas polycondensation of phthaloyl dichloride and bis[4-(3-chloro-3-phthalidyl)phenyl] ether (6) with diphenyl ether results in polymers 5 containing irregular units. 0025-1 16X/85/%03.00

A novel rearrangement in the syntheses of poly(3,3′‐phthalidylidene‐4,4′‐biphenylylene)s

“…The present work was aimed at a polymer synthesis via homopolycondensation of 3-aryl-3-chlorophthalides 3a-c, 4 and 5, containing substituents in the benzene ring of the phthalide cycle. The initial monomers were prepared on the basis of related substituted phthalide anhydrides 3a: m.p.…”

NMR study of phthalide‐type poly(phenylene)s. Symmetry and additivity

“…Their properties can be controlled by changing the structure of the bridged phenyl fragments . Homo‐poly(arylenphthalide), containing diphenyl, diphenyl oxide, diphenyl sulfide and fluorene fragments, as well as regularly alternating and sequentially ordered poly(arylenphthalide) periodic structures with terphenyl and diphenyl oxide fragments in the main chain were studied earlier with NMR techniques.…”

13C NMR spectroscopy of copoly(arylenephthalide) derivatives with diphenyloxide and terphenyl fragments in the main chain

“…Previously, 13 С NMR techniques allowed studying both the polycondensation of 3‐chlorophthalides (phthaloyl dichlorides) with aromatic (heteroaromatic) hydrocarbons and the homopolycondensation of 3‐aryl‐3‐chlorophthalides . The structure of the generated poly(arylenephthalide) derivatives has been elucidated, and it was shown that depending on the type of chloranhydrate and on the reaction conditions, the electrophilic attack of the aromatic hydrocarbon can occur both in para ‐position and meta ‐position.…”