Chlorosulfonation of Some Diphenyl Derivatives

Cremlyn, Richard J.; Montgomery, Stephen H.; Ng, Yew Hay; Simpson, David A.

doi:10.1080/03086648208078967

Cited by 7 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A sulfonimide‐derivatized dichlorodiphenyl sulfone comonomer (SIDCDPS) was synthesized as shown in Scheme . In a typical procedure, SDCDPS (4.00 g, 8.1 mmol) was refluxed with thionyl chloride (15.0 mL, 205 mmol) for 24 h 15. The reaction mixture was washed with hexanes to remove unreacted thionyl chloride, the solid was extracted with 200 mL of anhydrous acetone, and the acetone solution was rotary‐evaporated to yield a white, fluffy powder (3.18 g, 80% yield, mp = 235–236 °C).…”

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of poly(arylene ether sulfone) copolymers with sulfonimide side groups for a proton‐exchange membrane

Cho

Kim

et al. 2006

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

A sulfonimide‐containing comonomer derived from 4,4′‐dichlorodiphenylsulfone was synthesized and copolymerized with 4,4′‐dichlorodiphenylsulfone and 4,4′‐biphenol to prepare sulfonimide‐containing poly(arylene ether sulfone) random copolymers (BPSIs). These copolymers showed slightly higher water uptake than disulfonated poly(arylene ether sulfone) copolymer (BPSH) controls, but their proton‐conductivity values were very comparable to those of the BPSH series with similar ion contents. The proton conductivity increased with the temperature for both systems. For samples with 30 mol % ionic groups, BPSI showed less temperature dependence in proton conductivity and slightly higher methanol permeability in comparison with BPSH. The thermal characterization of the sulfonimide copolymers showed that both the acid and salt forms were stable up to 250 °C under a nitrogen atmosphere. The results suggested that the presumed enhanced stability of the sulfonimide systems did not translate into higher protonic conductivity in liquid water. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 6007–6014, 2006

show abstract

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of poly(arylene ether sulfone) copolymers with sulfonimide side groups for a proton‐exchange membrane

Cho

Kim

et al. 2006

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

show abstract

“…In contrast, attempted reaction of (2) with hydrazine, methylhydrazine and phenylhydrazine all failed to give isolatable products. The lH NMR spectrum of the dimethylsulfonamide (5) ("c) formula mirroanalysis found(dc.) % a=highest fragment ion corresponding to M+-Cl compared with diphenylhydantoin (1) (6 7.4) due to greater deshielding by the sulfonyl groups.…”

Section: Clqsmentioning

confidence: 99%