Polymerization via Zwitterion. 18. Alternating Cooligomerizations of Ethylenesulfonamide with Cyclic Phosphorus Compounds

Abstract

Polymerization via Zwitterion 1027This work when coupled with the studies of vinylferrocene (2)9-12,24 and vinylcynichrodene (3)6'7 provides the first detailed examples of the homopolymerization behavior of vinyl organometallic monomers.

Spontaneous zwitterionic copolymerisation: An undervalued and efficacious technique for the synthesis of functional degradable oligomers and polymers

“…[88] EtSAm, conversely, reacted exclusively through its oxygen atom, again the opposite of its copolymerisation with Ox, demonstrating that ambivalent ME have their propagation site determined by the MN they were copolymerised with during the SZWIP. [89] Fig. 10.…”

Hydrogen-Transfer Alternating Copolymerization of P-Ethenyl-N-n-propylphosphonamidic Acid Ethyl Ester with Cyclic Phosphonites Involving Oxidation-Reduction Process

“…This should be compared with the copolymerization of 2a with acrylamide2 and with ethylenesulfonamide. 3 …”

“…3 The copolymerizations occur spontaneously without any added catalyst involving a hydrogen-transfer process to produce 1 : 1 sequence-regulated alternating copolymers. Phosphorus atom in monomer 2a is trivalent, whereas that is changed to pentavalent in the product copolymer.…”

Polyphosphoranylation of p-benzoquinone with acyclic and cyclic phosphorus(III) compounds having aryl and aryloxy groups

“…Chemical shifts are negative upfield from external 80% H3P04 standard. 6 Calculated for 1:1 composition. ination of pyrocatechol was a main pathway to polymer 2b', whose 31P NMR signal appeared at +15.9 ppm.…”