METHOD FOR PRODUCING 3,3'-DIALLYL-4,4'-DIHYDROXYDIPHENYL SULFONE

PROBLEM TO BE SOLVED: To provide a method for producing 3,3'-diallyl-4,4'-dihydroxydiphenyl sulfone in high purity and high yield, the sulfone having, as a heat-sensitive recording material, little background fogging after color recording and being a developer having excellent heat resista...

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Hauptverfasser:	OBATA NAOKI, KURATA TAKAAKI, YONEDA TAKASHI, FUJII TAKAFUMI, HOSOMA SHINZO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing 3,3'-diallyl-4,4'-dihydroxydiphenyl sulfone in high purity and high yield, the sulfone having, as a heat-sensitive recording material, little background fogging after color recording and being a developer having excellent heat resistance.SOLUTION: Provided is a method for producing 3,3'-diallyl-4,4'-dihydroxydiphenyl sulfone by an intramolecular rearrangement reaction of 4,4'-diallyloxydiphenyl sulfone by heating to 200°C or higher in the presence of a catalytic amount of a heterocyclic compound and an amine compound. 【課題】感熱記録材料として発色記録後の地肌かぶりが少なく、耐熱性に優れた顕色剤である３，３'−ジアリル−４，４'−ジヒドロキシジフェニルスルホンを高純度及び高収率で製造する方法。【解決手段】触媒量の複素環化合物とアミン化合物の存在下、２００℃以上に加熱する事により４，４'−ジアリルオキシジフェニルスルホンの分子内転位反応により、３，３'−ジアリル−４，４'−ジヒドロキシジフェニルスルホンを製造する方法。【選択図】なし