CAS: 527-60-6; 2,4,6-Trimethylphenol

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CAS号5980-97-2 2,4,6-三甲基苯硼酸 | CAS号576-83-0 2-溴均三甲基苯 | CAS号5450-46-4 Benzene,1,3,5-t... | CAS号536-74-3 苯乙炔 | CAS号91-04-3 2-羟基-5-甲基间苯二甲醇 | CAS号70242-73-8 O-2,4,6-trimeth... | CAS号234123-80-9 1,3,5-trimethyl... | CAS号108-67-8 均三甲苯 | CAS号5806-59-7 MESITYLLITHIUM | CAS号110784-44-6 2,4,6-trimethyl... | CAS号110105-12-9 2,4-dichloro-6-... | CAS号109513-19-1 N,N-diethyl-2-(... | CAS号2233-18-3 3,5-二甲基-4-羟基苯甲醛 | CAS号527-61-7 2,6-二甲基对苯醌 | CAS号16404-66-3 2,5-Cyclohexadi... | CAS号58661-27-1 4-(ethoxymethyl... | CAS号6245-04-1 2-HYDROXY-3-MET... | CAS号4397-14-2 4-(羟甲基)-2,6-二甲基苯酚 | CAS号81828-87-7 2-(2,4,6-trimet...

4-甲基苯胺盐酸盐置于甲醇体系中,化学反应生成 2,4,6-三甲酚
参考文献:Ccxvii.-芳香族碱基的核烷基化.第一部分.甲醇对邻甲苯和对甲苯胺,亚甲胺和二甲基甲亚胺盐酸盐的作用
标题:Ccxvii.-芳香族碱基的核烷基化.第一部分.甲醇对邻甲苯和对甲苯胺,亚甲胺和二甲基甲亚胺盐酸盐的作用
摘要:
DOI:10.1039/jr9310001581

专利信息

专利号:US-2010099894-A1
优先权日:2006-10-09
标 题 :Method for the Synthesis of Cyclic Acetals by the Reactive Extraction of a Polyol in a Concentrated Solution
发明人：DUBOIS JEAN-LUC; IBORRA CHORNET SARA; VELTY ALEXANDRA I LUCIENNE; CORMA CANOS AVELINO
权利人:DUBOIS JEAN-LUC; IBORRA CHORNET SARA; VELTY ALEXANDRA I LUCIENNE; CORMA CANOS AVELINO
摘要:A method for the synthesis of cyclic acetals comprises reacting at least one carbonyl-function compound selected from aldehydes, ketones, and/or linear acetals, on a polyol in a concentrated aqueous solution exceeding 20 wt % in a reactor containing an acidic catalyst. The carbonyl-function compound is selected so that the cyclic acetal obtained has a water solubility lower than 20000 mg/kg. During the catalytic reaction for the cyclic acetal synthesis, at least one portion of the organic phase containing the cyclic acetal is separated. The acidic catalysis is either homogeneous when using a water-soluble strong acid, or heterogeneous when using a solid acid such as a resin, a zeolite, or any appropriately acidified solid. The extractive reaction method can be used for obtaining high conversions and selectivity.

专利号:WO-2020230156-A1
优先权日:2019-05-10
标题 :A catalyst for one pot synthesis of nabumetone and process of preparation thereof
发明人：YADAV GANAPATI DADASAHEB; PISAL DEVENDRA SHRIRAM
权利人:YADAV GANAPATI DADASAHEB
摘要:The present invention relates to novel heterogeneous catalyst composition for selective synthesis of Nabumetone in one pot process and process to prepare the catalyst. The present invention provides a novel catalyst comprises of Lanthanum, Magnesium, and Nickel particles doped on specific type of silica support, preferably that the support is in amorphous nature. The catalyst is having bifunctional condensation and hydrogenation properties for one pot synthesis of Nabumetone comprising of: Nickel and Lanthanum-magnesium mixed oxide on support of mesoporous silica; Wherein 25 to 30 % w/w of Lanthanum-magnesium mixed oxide are entrapped in pores and surface of support is coated with 3 to 5% w/w Nickel with the result that it prevent the leaching of Lanthanum-magnesium mixed oxide in reaction medium and provides reusability of catalyst.

专利号:WO-2025104067-A1
优先权日:2023-11-14
标题 :Use of a heterogeneous copper/zinc catalyst for continuous, gas-phase synthesis of methyl isobutyl ketone and/or methyl isobutyl carbinol by hydrogenation of mesityl oxide
发明人：RUPPIN CHRISTOPHE
权利人:ARKEMA FRANCE
摘要:The present invention relates to the use of a catalyst comprising a mixture of copper and zinc for continuous, gas-phase synthesis of methyl isobutyl ketone (MIBK) and/or methyl isobutyl carbinol (MIBC) from mesityl oxide. The invention also relates to a synthesis method comprising the following sequence of steps: continuous injection of the reagents in gas form through a reactor; hydrogenation reaction under pressure of hydrogen and at a temperature of between 120 and 250°C in the presence of the catalyst; condensation of the stream from the reactor and separation of the gas stream from the liquid stream; and purification of the liquid stream in order to separate the methyl isobutyl ketone and/or the methyl isobutyl carbinol.

专利号:US-7678877-B2
优先权日:2004-12-03
标题 :Process for the synthesis of polyalkylphenol antioxidants
发明人：YANG SUIZHOU; CHOLLI ASHOK L
权利人:POLNOX CORP
摘要:Disclosed is a method for the synthesis of sterically hindered polymeric antioxidants based on phenol type antioxidant monomers. The method includes partially etherifying, polymerizing and thermally rearranging a phenol containing monomer represented by the following structural formula: n nto produce a sterically hindered polymeric macromolecular antioxidant. X, R 10 and q are as defined herein. The disclosed method is a simple, direct and economical process for the synthesis of sterically hindered polymeric macromolecular antioxidants.

专利号:WO-2024133119-A1
优先权日:2022-12-19
标 题:Process for the synthesis of isophorone in the liquid phase, including recycling of the by-products
发明人：RUPPIN CHRISTOPHE
权利人:ARKEMA FRANCE
摘要:The present invention relates to a continuous process for the synthesis of isophorone in the liquid phase by alkaline self-condensation of acetone, comprising the following successive steps: a) continuously injecting, through a tubular reactor (R), a stream of an aqueous alkali hydroxide solution and a stream of an organic solution comprising acetone and by-products recycled in step g), followed by b) condensation reaction of the acetone in the tubular reactor (R), then c) distillation of the reaction mixture from the tubular reactor (R), then d) separation of the concentrated raw reaction product from the distillation of step c), resulting in an alkaline aqueous phase and an organic phase containing isophorone, then e) distillation of the organic phase containing the isophorone recovered in the preceding step, then f) distillation of the polycondensation sub-products from the bottom of the column (D2) from the preceding distillation, then g) recycling, to the tubular reactor (R), of the stream from the column head of the preceding distillation (D3), said stream comprising xylitones and/or isoxylitones.

专利号:US-4067906-A
优先权日:1976-08-03
标题 :Novel process for the synthesis of tricyclo[6.2.2.03,8 ]dodecane derivatives
发明人：TAVARES ROBERT F; KATTEN ELLIOT
权利人:GIVAUDAN CORP
摘要:A novel process for the preparation of tricyclo[6.2.2.0 3 ,8 ]dodecane derivatives is presented. This novel process is applied to the synthesis of the odorant 4-acetyl-1,7,7-trimethyltricyclo[6.2.2.0 3 ,8 ]-3-dodecene, also known as 4-aceto-6,8a-ethano-1,1,6-trimethyl-1,2,3,5,6,7,8,8a-octahydronaphthalene.