CAS: 141-79-7; 4-Methyl-3-Penten-2-One

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CAS号2158-24-9 4-Methyl-3-pent... | CAS号4325-82-0 4-甲基-3-戊醇 | CAS号67-64-1 丙酮 | CAS号108-95-2 苯酚 | CAS号16339-21-2 4-甲基-4-(1-甲基-2-... | CAS号4478-63-1 Ethanone,1-(3,3... | CAS号625-27-4 2-甲基-2戊烯 | CAS号65447-92-9 methyl-2 (methy... | CAS号590-38-5 2-甲基-3-戊炔-2-醇 | CAS号41321-86-2 ethyl 6-methylp... | CAS号112332-52-2 3-bromo-4-methy... | CAS号10528-65-1 4-甲基-4(对甲苯基)-2-戊酮 | CAS号58343-30-9 3,3,6,3',3',6'-... | CAS号50817-80-6 2-氯-4-甲基苯甲醛 | CAS号2951-10-2 4-chloro-6-meth... | CAS号4404-98-2 4-氨基-4-甲基-2-戊醇 | CAS号491-09-8 Piperitenone | CAS号4705-09-3 4-isopropyliden... | CAS号4127-47-3 1,1,2,2-四甲基环丙烷 | CAS号472-41-3 4-(2,2,4-三甲基色满-...

4-Methyl-Pent-3-En-2-One Oxime置于ammonium Molybdate Tetrahydrate 高氯酸,双氧水,Potassium Bromide体系中,用 水 用作溶剂,化学反应 1.0H,以90%的收率获得4-甲基-3戊烯-2-酮
参考文献:一种在过氧化氢存在下在水介质中使用溴化钾和七钼酸铵的简便催化脱肟方法
标题:一种在过氧化氢存在下在水介质中使用溴化钾和七钼酸铵的简便催化脱肟方法
摘要:描述了一种使用催化量的溴化钾和四水合七钼酸铵与 30% 过氧化氢相结合的简单,温和和有效的方法,用于在水性介质中将各种酮肟和醛肟裂解为相应的羰基化合物.
Doi:10.1055/s-2008-1032035

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: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.

专利号:US-6646127-B2
优先权日:2000-10-03
标 题:Process for the synthesis of 2,2,6,6-tetramethyl-4-oxopiperidine
发明人：MALZ JR RUSSELL E; SON YOUNG-CHAN; SUIB STEVEN L
权利人:UNIROYAL CHEM CO INC; UNIV CONNECTICUT
摘要:A process for the synthesis of 2,2,6,6-tetramethyl-4-oxopiperidine is disclosed wherein the process comprises reacting in a liquid phase reaction mixture:A) at least one acetone compound, andB) at least one ammonia donor compound,in the presence of a catalytically effective amount of a crystalline aluminosilicate containing calcium.