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

Sàegusa, Takeo; Kobayashi, Shiro; Kobayashi, Takatoshi

doi:10.1021/ma50003a049

Cited by 8 publications

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“…An analogous type of copolymerization was also reported using cyclic and acyclic phosphorus(III) compounds as reductant monomers involving the oxidation of the P(III) monomer to a P(V) monomer unit in the product copolymer. [25][26][27] EXPERIMENTAL PROCEDURE Materials 1a and 1b were prepared by the reaction of a GeCl 2 1,4-dioxane complex with the appropriate lithium amides, as reported. 9,10 2 was prepared by the oxidation of p-hydroxydiphenylamine with Ag 2 CO 3 and then purified by sublimation.…”

Section: Introductionmentioning

confidence: 99%

Oxidation-reduction alternating copolymerization of germylene and N-phenyl-p-quinoneimine

Iwata

Abe

Shoda

et al. 2014

Polym J

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The germylenes bis[bis(trimethylsilyl)amido]germanium (1a) and bis [t-butyl-trimethylsilyl]amido]germanium (1b) were reacted with N-phenyl-p-quinoneimine (2) to give copolymers (3a and 3b) with alternating tetravalent germanium and p-aminophenol units. The copolymerization took place smoothly at 0°C without added catalyst or initiator. 1 acted as a reductant monomer, and 2 acted as an oxidant monomer (oxidation-reduction alternating copolymerization). Product copolymers were obtained in very high yields and had high molecular weights. The copolymers were soluble in toluene, benzene, n-hexane and chloroform, whereas they were insoluble in acetonitrile and acetone. Additionally, they were stable toward hydrolytic degradation. Electron spin resonance (ESR) spectroscopic studies of the reaction suggested a structure of a stable germyl radical and a plausible mechanism of biradical copolymerization.

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Section: Introductionmentioning

confidence: 99%