Synthesis and study of antithrombogenic polymers

Dehydro coupling of aromatic nuclei by catalyst-oxidant systems: poly(p-phenylene)

“…Coupling of benzothiophene was accomplished with molybdenum pentachloride or tungsten chloride. 153,162 A 55-65% yield of oligomer was realized at 343-363 K. The basic structure of the monomer was retained in the repeating units. The product was soluble in organic solvents, softened at 368-393 K, and underwent degradation at 613 K. Oxidation of tetrahydrocarbazole by ferric chloride gave an unsymmetrical dehydrodimer product.…”

Aryl (meth)acrylates and polymers based on them

“…10 Optimum conditions were found for the preparation of 2,6-dimethylphenyl acrylate, 2,4,6-trichloro-, 2,4,6-tribromo-, 2,4,6-trimethyl-, 2,6-diisopropyl-and 2,6-di(tert-butyl)-phenyl methacrylates, 2,4,5-trichlorophenyl acrylate 21 and methacrylate. 22 PMA with substituents in the aromatic ring containing the aldehyde and ketone, 23 carboxy, 24,25 benzyl, 26 tetracyanocyclobutyl 27 and dioxolane 28 groups have been described. Special mention should be made of (meth)acrylates of hydroxyphenylacetic 29 and hydroxybenzoic 24,25 acids as well as of surfactant salts 30 of the general formula CH 2 =CMeC(O)OC 6 H 4 (CH 2 ) n X [n = 3, 7; X = CO 2 Na, N + (C n H 2n+1 ) 3 Z 7 ; Z = Cl, Br, I, MeSO 4 ].…”

“…22 PMA with substituents in the aromatic ring containing the aldehyde and ketone, 23 carboxy, 24,25 benzyl, 26 tetracyanocyclobutyl 27 and dioxolane 28 groups have been described. Special mention should be made of (meth)acrylates of hydroxyphenylacetic 29 and hydroxybenzoic 24,25 acids as well as of surfactant salts 30 of the general formula CH 2 =CMeC(O)OC 6 H 4 (CH 2 ) n X [n = 3, 7; X = CO 2 Na, N + (C n H 2n+1 ) 3 Z 7 ; Z = Cl, Br, I, MeSO 4 ].…”

“…Optimisation of the reaction conditions makes it possible to introduce various substituents, for example, perfluoroalkyl groups, 280 into the phenyl groups of PPMA. Reactive functional groups can be subjected to further transformations 281 and be used for the chelate formation. 282,283 Chemical transformations of poly[aryl (meth)acrylates] under the action of different types of radiation are rather diverse.…”