CAS: 606-12-2; (2-Hydroxyphenyl)(4-Hydroxyphenyl)Methanone

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水杨酸苯酯置于四氯化锡体系中,化学反应生成 2,4'-二羟基二苯甲酮
参考文献:Staedel,Justus Liebigs Annalen Der Chemie,1894,Vol. 283,P. 175
标题:Staedel,Justus Liebigs Annalen Der Chemie,1894,Vol. 283,P. 175

专利信息

专利号:US-5068353-A
优先权日:1986-12-31
标题:Synthesis of aromatic bis(ether phthalimide) compounds
发明人：DELLACOLETTA BRENT A
权利人:GEN ELECTRIC
摘要:Aromatic bis(ether phthalimide) compounds of the formula (I): ##STR1## are synthesized by reacting a phthalimide of the formula (II): ##STR2## with a stoichiometric excess of an alkali metal diphenoxide salt of the formula (III): n n M--O--R.sub.2 --O--M (III) n n in the presence of a catalytic amount of a phase transfer catalyst, in a anhydrous nonpolar organic solvent under ether-forming conditions. Impurities are removed by solid-liquid separation techniques, such as filtering at a temperature at which the compound of formula (I) is substantially completely soluble while alkali metal salt impurities are substantially insoluble. The compound of formula (I) is recovered from the filtrate in high yields and at high purity.

专利号:JP-H0832680-B2
优先权日:1986-12-31
标题:Synthesis of aromatic bisether phthalimide compounds

专利号:US-7268237-B2
优先权日:2005-03-11
标题:Direct dianhydride synthesis
发明人：BRUNELLE DANIEL JOSEPH; CELLA JAMES ANTHONY; YE QING; CHAN KWOK PONG
权利人:GEN ELECTRIC
摘要:This invention is related to a method for making diether dianhydrides by the reaction of halophthalic anhydride and a metal salt of an aromatic dihydroxy compound in the presence of a solvent and a phase transfer catalyst. Typical phase transfer catalyst include guanidium salts, aminopyridinium salts, or phosphazenium salts.

专利号:EP-0273159-A1
优先权日:1986-12-31
标题 :Synthesis of aromatic bis(ether phthalimide) compounds

专利号:EP-0273159-B1
优先权日:1986-12-31
标 题 :Synthesis of aromatic bis(ether phthalimide) compounds