Английская Википедия:4,4'-Dichlorodiphenyl sulfone

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4,4′-Dichlorodiphenyl sulfone (DCDPS) is an organic compound with the formula (ClC6H4)2SO2. Classified as a sulfone,[1] this white solid is most commonly used as a precursor to polymers that are rigid and temperature-resistant such as PES or Udel.[2]

Synthesis and reactions

DCDPS is synthesized via sulfonation of chlorobenzene with sulfuric acid, often in the presence of various additives to optimize the formation of the 4,4′-isomer:

ClC6H5 + SO3 → (ClC6H4)2SO2 + H2O

It can also be produced by chlorination of diphenylsulfone.[3]

With chloride substituents activated toward substitution, DCDPS is useful in the production of polysulfones:

n (ClC6H4)2SO2 + n NaO−X−ONa → [(O−X−OC6H4)2SO2]n + 2n NaCl

Further reading

References