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- W2386147996 abstract "The reaction of p-methylphenyltrimethylsilyl ether(1) with 4,4'-dichlorodiphenylsulfone(2) in DMF and in the presence of tetrabutylammonium fluoride(TBAF) at 100 ℃ for 1 h afforded 4,4'-bis(4-methylphenoxy)diphenyl sulfone(3) in a yield of 92%.Then compopund 3 was oxidized in air to the corresponding intermediate 4,4'-bis(4-carboxyphenoxy)diphenyl sulfone(4) in a yield of 90% in the presence of a catalytic amount of N-bromosuccinimde(NBS) under photoirradiation.Subsequently the reaction of compound 4 with thionyl chloride yielded target compound 4,4'-bis(4-chloroformylphenoxy)diphenylsulfone(5) in a overall yield of about 74.5%(based on compound 1).The present method has the advantages of readily availability of starting materials,mild reaction conditions,convenient manipulation and good yields." @default.
- W2386147996 created "2016-06-24" @default.
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- W2386147996 date "2007-01-01" @default.
- W2386147996 modified "2023-09-25" @default.
- W2386147996 title "Synthesis of 4,4'-Bis(4-chloroformylphenoxy)diphenylsulfone" @default.
- W2386147996 hasPublicationYear "2007" @default.
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