Processes for the preparation of diphenylsulfone compounds

Processes for the preparation of diphenylsulfone compounds

The invention provides a method for producing highly pure 4,4'-dihydroxydiphenyl sulfone monoethers advantageously in industrial production. In a process for producing a compound represented by Formula (I) (wherein, R and R are each independently halogen, alkyl having 1 to 8 carbons or alkenyl...

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1. Verfasser: KATSUURA KIYOSHI,HIDAKA TOMOYA,TAKASHINA YUTAKA,OHNUKI YASUO
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator KATSUURA KIYOSHI,HIDAKA TOMOYA,TAKASHINA YUTAKA,OHNUKI YASUO
description The invention provides a method for producing highly pure 4,4'-dihydroxydiphenyl sulfone monoethers advantageously in industrial production. In a process for producing a compound represented by Formula (I) (wherein, R and R are each independently halogen, alkyl having 1 to 8 carbons or alkenyl having 2 to 8 carbons; m and n are each independently 0 or an integer of 1 to 4; and R is alkyl having 1 to 8 carbons, alkenyl having 2 to 8 carbons, cycloalkyl having 3 to 8 carbons or optionally substituted aralkyl), (1) a pH adjustment is carried out twice or more in the purification process, (2) an excessive amount of alkyl halide used is removed, (3) a solvent, such as water, containing 0.05 ppm or less of iron components is used, (4) tanks with corrosion-resistant layers over the inner walls are used, (6) a chelating agent is added, and (7) a means of drying with mechanical stir is applied.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Processes for the preparation of diphenylsulfone compounds
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