| 摘要 |
<p>A method for controlled production of mono and diether derivatives of 4,4'-dihydroxydiphenyl sulfone (SDP) namely 4-substituted-4'-hydroxydiphenyl sulfones and 4,4'-disubstituted diphenyl sulfones in high yields by reacting alkyl halide and the like, with 4,4'- dihydroxydiphenyl sulfone. 4-substituted-4'-hydroxydiphenyl sulfone is prepared by reacting equimolar ratio of 4,4'-dihydroxydiphenyl sulfone, alkyl halide and aqueous alkali solution with >80% yield. 4,4'-disubstituted diphenyl sulfone is prepared by reacting one mole of 4,4'- dihydroxydiphenyl sulfone, two moles of alkyl halide and like and two moles of aqueous alkali solution with >80% yield. The method of invention is useful in production of diphenyl sulfone compounds such as 4-allyloxy-4'-hydroxydiphenyl sulfone, 4,4'-diallyloxydiphenyl sulfone, 4-isopropxy-4'-hydroxydiphenyl sulfone, 4,4'-diisopropoxydiphenyl sulfone, 4- benzyloxy-4'-hydroxydiphenyl sulfone, 4,4'-dibenzyloxydiphenyl sulfone etc. This is a commercially feasible green manufacturing process.</p> |
