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Hong Hua WANG, Jin Ying DING, Tian Lu CHEN. Cyclic Oligomers of Phenolphthalein Polyarylene Ether Sulfone (Ketone): Preparation Through Cyclo-depolymerisation of Corresponding Polymers[J]. Chinese Chemical Letters,
;2004, 15(11): 1377-1379.
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Cyclic oligomers of phenolphthalein polyarylene ether sulfone(ketone) were prepared through cyclo-depolymerisation of corresponding polymers using CsF as the catalyst in dipolar aprotic solvent DMAc and DMF, and a family of macrocycles containing from dimer up to at least heptamer were confirmed by GPC, HPLC and MALDI-TOF-MS. The yields of cyclics get as high as 86.3% and 87.9% respectively.
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