CAS: 27955-94-8; 4,4',4''-(Ethane-1,1,1-Triyl)Triphenol

上下游产品

CAS号99-93-4 对羟基苯乙酮 | CAS号108-95-2 苯酚 | CAS号123-54-6 乙酰丙酮 | CAS号83425-83-6 1,1,1-tris(4-me... | CAS号3010-81-9 4,4',4''-三甲氧基三苯甲基醇 | CAS号80-05-7 双酚a | CAS号26567-75-9 4-hydroxypent-3... | CAS号160510-06-5 1-[1,1-bis[4-(4...

4,4',4'-三甲氧基苯基甲醇置于乙硫醇钠体系中,用 N,N-二甲基甲酰胺 用作溶剂,化学反应生成1,1,1-三(4-羟基苯基)乙烷
参考文献:Efficient Triple Coupling Reaction To Produce A Self-Adjusting Molecular Cage
标题:Efficient Triple Coupling Reaction To Produce A Self-Adjusting Molecular Cage
摘要:
Doi:10.1021/ja00305A047

专利信息

专利号:WO-9900440-A1
优先权日:1997-06-26
标 题:Synthesis of a dendritic polyalcohol
发明人：IHRE HENRIK; HULT ANDERS
权利人:PERSTORP AB; IHRE HENRIK; HULT ANDERS
摘要:A process for a double stage convergent synthesis of a polymeric polyalcohol substantially and preferably built up from polyester units and composed of a monomeric or polymeric core to which at least one hyperbranched dendritic branch (dendron) consisting of a number of branching generations is added. The branching generations comprise a polymeric or monomeric branching chain extender having three reactive functions of which two are hydroxyl groups and one is a carboxyl group. The two hydroxyl groups of the branching chain extender is in a first step ketal protected by reacting said two hydroxyl groups with a ketal. A second step includes protection of the carboxyl group of said branching chain extender. The ketal protected branching chain extender and the carboxyl protected chain extender are then employed for repeated addition in a number of step yielding a predetermined number of branching generations. The thus synthesized dendron is finally added to a core having reactive hydroxyl or epoxide groups and the ketal protected hydroxyl groups are optionally deprotected.

专利号:WO-2025083698-A1
优先权日:2023-10-16
标 题 :A method for synthesis and purification of 1,1,1- tris(4-hydroxyphenyl)ethane (thpe) with improved color quality
发明人：MANKAME POOJA; KUDAVASKAR DHANANJAY; THATTE CHITTARANJAN
权利人:Moza Dhruv; Kondepudi Madhusmita
摘要:The present invention discloses an improved and efficient method for the synthesis of 1,1,1 tris(4- hydroxyacetophenone) ethane, which has potential applications in the pharmaceutical and chemical industries. In particular, an improved method for preparing 1,1,1 tris(4-hydroxyacetophenone) ethane is provided which comprises heating a mixture of phenol and 4-hydroxyacetophenone in the presence of effective amounts of catalyst and promoter such that the resulting 1,1,1 tris(4- hydroxyacetophenone) ethane is substantially free of various reaction impurities. With the use of a neutralizing agent, it is observed that the color of the crude product is reduced significantly and the number of purification or re-crystallization steps has been reduced.

专利号:US-6211329-B1
优先权日:1997-06-26
标题:Process for preparation of a dendritic polyol
发明人：REHNBERG NICOLA; PETTERSSON BO; ANNBY ULF; MALMBERG MATS
权利人:PERSTORP AB
摘要:A process for synthesis of a polymeric polyalcohol substantially and preferably built up form polyester units and composed of a monomeric or polymeric initiator molecule to which at least one dentritic branch (dendron) consisting of a number of branching generations is added. The branching generations comprise a polymericor monomeric branching chain extender having three reactive functions of which two are hydroxyl groups. The two hydroxyl groups of the ranching chain extender is acetal protected by reaction between said two hydroxyl groups and an acetal-forming carbonyl compound, preferably an aldehyde. The acetal protected branching chain extender is then employed for addition to the initiator molecule of a first branching generation followed by an optional deprotection of the hydroxyl groups by decomposition of acetals and for addition in repeated steps of further branching generations. Additions of branching generations individually employ an acetal protected branching chain extender synthesized from the same or a different branching chain extender and/or acetal-forming carbonyl compound and addition of a branching generation is optionally followed by addition of a spacing generation.

专利号:US-5214118-A
优先权日:1990-10-05
标 题:Process for synthesis of polyestercarbonate-siloxane copolymers
发明人：HAWKINS CHRISTOPHER M; ROSENQUIST NILES R
权利人:GEN ELECTRIC
摘要:A process for synthesizing polyestercarbonate-siloxane copolymers which have a smaller concentration of low molecular weight species and greater thermal stability has been described. Essentially the process includes adding the comonomer, diacid chloride siloxane, after approximately 1/3 of the phosgene has been added, in a conventional interfacial copolymerization, (as opposed to addition at the beginning of the polymerization).

专利号:US-6482977-B1
优先权日:2000-07-28
标 题:Melt process for the synthesis of diaryl esters of aliphatic diacids
发明人：WHITNEY JOHN MORGAN; FABER REIN MOLLERUS; BOVEN GEERT; LENS JAN-PLEUN
权利人:GEN ELECTRIC
摘要:This invention relates to a method for preparing diaryl esters, comprising the step of reacting a mixture comprising diaryl carbonate and a dicarboxylic acid, wherein 2.005 to 2.2 molar equivalents of diaryl carbonate per molar equivalent of dicarboxylic acid are provided.

专利号:US-8394912-B2
优先权日:2009-12-22
标 题 :Process and apparatus for the preparation of polycarbonate
发明人：DOEBERT FRANK; STREMMEL ANDREAS; BIEDRON CHRISTOPH; LAUE STEPHAN; RECHNER JOHANN; HAGEN TORSTEN; BRUYNSEELS FRANK; QUAEYHAEGENS FRANK; DECLOEDT JOHAN; VAN DORST PAUL; ARNDT UWE; EYNDE JOHAN VANDEN; TRACHT URSULA; KOENIG THOMAS; LIESENFELDER ULRICH
权利人:DOEBERT FRANK; STREMMEL ANDREAS; BIEDRON CHRISTOPH; LAUE STEPHAN; RECHNER JOHANN; HAGEN TORSTEN; BRUYNSEELS FRANK; QUAEYHAEGENS FRANK; DECLOEDT JOHAN; VAN DORST PAUL; ARNDT UWE; EYNDE JOHAN VANDEN; TRACHT URSULA; KOENIG THOMAS; LIESENFELDER ULRICH; BAYER MATERIALSCIENCE AG
摘要:The invention relates to a process for the pretreatment of material surfaces in order to minimize the interaction between polycarbonate and metal and, in the processing and synthesis of polycarbonate, to obtain a high-quality polymer which in particular does not become discolored and is free of insoluble constituents.