专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6005122A Preparation of .alpha.-tocopherol or .alpha.-tocopheryl acetate by reacting trimethylhydroquinone and phytol or isophytol, with recycling of the zinc halide condensation catalyst 失效
标题翻译：通过三甲基对苯二酚和植物醇或异植醇反应制备α-生育酚或α-生育酚乙酸酯，再加上卤化锌缩合催化剂
公开(公告)号：US6005122A
公开(公告)日：1999-12-21
申请号：US990092
申请日：1997-12-12
申请人： Kai-Uwe Baldenius , Wulf Kaiser , Bernhard Bockstiegel , Harald Laas , Bernhard Schulz , Peter Schmitt , Helmut Glietenberg
发明人： Kai-Uwe Baldenius , Wulf Kaiser , Bernhard Bockstiegel , Harald Laas , Bernhard Schulz , Peter Schmitt , Helmut Glietenberg
IPC分类号： B01J27/138 , C07D311/72
CPC分类号： C07D311/72 , B01J27/138
摘要： A process for preparing .alpha.-tocopherol or .alpha.-tocopheryl acetate by reacting 2,3,5-trimethylhydroquinone with isophytol or phytol in the presence of a zinc halide condensation catalyst and a proton donor in a solvent with or without subsequent esterification with acetic anhydride, which comprisesA. carrying out the reaction in a nonpolar solvent which is only slightly water-miscible, if at all andB. introducing the required zinc halide into the reaction in the form of a mixture of from 1 to 4 mol of water per mol of zinc halide.The possibility of introducing the zinc halide required in the process according to the invention in the form of a mixture of zinc halide and water which can be readily handled and metered at from 50 to 200.degree. C. without impairing the yield and purity of the tocopherol opens the way to an advantageous recycling of the zinc halide after the reaction by separating off or extracting and recycling the zinc halide in the form of a from 60 to 90% strength by weight solution or pumpable magma.
摘要翻译：在卤化锌缩合催化剂和质子供体存在下，使2,3,5-三甲基氢醌与异麦芽糖醇或植物醇在溶剂中反应制备α-生育酚或α-生育酚乙酸酯的方法，其中或不用随后用乙酸酐酯化，其包括A.在非极性溶剂中进行反应，所述非极性溶剂仅仅是轻微的水混溶性的，如果有的话，则B.将所需的卤化锌以每摩尔1至4摩尔水的混合物的形式引入反应中的卤化锌。将本发明方法中所需的卤化锌以卤化锌和水的混合物的形式引入卤化物的可能性，其可以在50-200℃下容易地处理和计量，而不损害生育酚的产率和纯度打开通过分离或提取和重新使用60至90％重量浓度的溶液或可泵送岩浆形式的卤化锌，从而在反应之后有效地再循环卤化锌。

2. 发明授权

US06554965B1 Rectification column for isolating pure substances from high boiling air-and/or temperature sensitive substances 失效
标题翻译：用于从高沸点空气和/或温度敏感物质中分离纯物质的精馏塔
公开(公告)号：US06554965B1
公开(公告)日：2003-04-29
申请号：US09466844
申请日：1999-12-20
申请人： Horst Hartmann , Wolfram Burst , Wulf Kaiser , Harald Laas , Paul Grafen , Bernhard Bockstiegel , Kai-Uwe Baldenius
发明人： Horst Hartmann , Wolfram Burst , Wulf Kaiser , Harald Laas , Paul Grafen , Bernhard Bockstiegel , Kai-Uwe Baldenius
IPC分类号： B01D300
CPC分类号： B01D3/141 , B01D3/008 , B01D3/146 , B01D3/16 , B01J19/32 , B01J2219/3221 , B01J2219/3222 , B01J2219/32227 , B01J2219/32272 , B01J2219/32408 , B01J2219/32416 , B01J2219/326 , C07C17/38 , C07D311/72 , Y10S159/42 , Y10S261/72
摘要： A reflection column which contains liquid distributors having at least 500 drip points/m2, which are arranged at an angle of about 90° C. to cloth layers of packing elements located immediately therebelow; and a combination of insulation and protective heating. The column is advantageously used for the rectification of mixtures of high-boiling air- or temperature-sensitive substances requiring effective separation efficiency.
摘要翻译：一种反射柱，其包含具有至少500个滴点/ m 2的液体分配器，其以约90℃的角度布置在紧邻其下方的包装元件的布层; 并结合绝缘和保护加热。该柱有利地用于需要有效分离效率的高沸点空气或温度敏感物质的混合物的精馏。

3. 发明授权

US6111117A Process for isolation of pure substances from mixtures of high-boiling air and/or temperature-sensitive substances which require a high separation efficiency by rectification under medium vacuum, and columns suitable for this process 失效
标题翻译：从高沸点空气和/或温度敏感物质的混合物中分离纯物质的方法，这些物质需要通过在中等真空下进行精馏才能获得高分离效率，以及适用于该方法的色谱柱
公开(公告)号：US6111117A
公开(公告)日：2000-08-29
申请号：US981491
申请日：1998-01-08
申请人： Horst Hartmann , Wolfram Burst , Wulf Kaiser , Harald Laas , Paul Grafen , Bernhard Bockstiegel , Kai-Uwe Baldenius
发明人： Horst Hartmann , Wolfram Burst , Wulf Kaiser , Harald Laas , Paul Grafen , Bernhard Bockstiegel , Kai-Uwe Baldenius
IPC分类号： B01D3/00 , B01D3/10 , B01D3/14 , B01D3/16 , B01D3/26 , B01D3/32 , B01J19/32 , C07C17/38 , C07D311/72
CPC分类号： B01D3/141 , B01D3/008 , B01D3/146 , B01D3/16 , B01J19/32 , C07C17/38 , C07D311/72 , B01J2219/3221 , B01J2219/3222 , B01J2219/32227 , B01J2219/32272 , B01J2219/32408 , B01J2219/32416 , B01J2219/326 , Y10S159/42 , Y10S261/72
摘要： Process for isolating pure substances from of mixtures of high-boiling air- and/or temperature-sensitive substances which require a high separation efficiency, by rectification under medium vacuum in columns containing metal cloth packings with ordered structure using channel liquid distributors with 500 or more drip points/m.sup.2, which are arranged at an angle of 90.degree. to the cloth layers of the packing elements located immediately below the distributors, in which two or more of the packing elements underneath the liquid distributors have only a very small height, which ensure virtual exclusion of air and are designed so that no heat exchange through the column wall can take place during the rectification. The patent also relates to packed columns which can be used for this process and to the use of this process and these columns for the final purification of vitamin E acetate by distillation.
摘要翻译： PCT No.PCT / EP96 / 02852 Sec。 371日期1998年1月8日 102（e）1998年1月8日PCT PCT 1996年6月29日PCT公布。出版物WO97 / 02880 日期1997年1月30日从需要高分离效率的高沸点空气和/或温度敏感物质的混合物中分离纯物质的过程，通过在含有有序结构的金属布填料的柱中在中等真空下进行精馏，使用通道液具有500个或更多滴点/ m2的分配器，其布置成与位于分配器正下方的包装元件的布层成90°的角度，其中液体分配器下方的两个或更多个包装元件仅具有非常小高度，确保虚拟排除空气，并设计成在整流期间不会通过柱壁进行热交换。该专利还涉及可用于该方法的填充柱和该方法的使用，并且这些柱用于通过蒸馏最终纯化维生素E乙酸酯。

4. 发明授权

US5950454A Cloth or cloth-like packing which is subject to low pressure losses and has an ordered structure for use in material-exchange columns and rectification method using such packing 失效
标题翻译：承受低压损失的布或布状包装，具有用于材料交换柱的有序结构和使用这种包装的精馏方法
公开(公告)号：US5950454A
公开(公告)日：1999-09-14
申请号：US973875
申请日：1998-01-07
申请人： Wolfram Burst , Horst Hartmann , Wulf Kaiser , Harald Laas , Paul Grafen , Bernhard Bockstiegel , Kai-Uwe Baldenius
发明人： Wolfram Burst , Horst Hartmann , Wulf Kaiser , Harald Laas , Paul Grafen , Bernhard Bockstiegel , Kai-Uwe Baldenius
IPC分类号： B01D3/00 , B01D3/10 , B01D3/14 , B01D3/16 , B01D3/26 , B01D3/32 , B01D53/86 , B01D53/94 , B01J19/32 , B01J23/63 , B01J23/656 , B01J23/89 , C07C17/38 , C07D311/72 , B01D47/00
CPC分类号： B01J23/8913 , B01D3/008 , B01D3/141 , B01D3/146 , B01D3/16 , B01D53/864 , B01D53/8659 , B01D53/8662 , B01D53/8668 , B01J19/32 , B01J23/63 , B01J23/6562 , C07C17/38 , C07D311/72 , B01D2255/102 , B01D2255/20715 , B01D2257/2062 , B01J2219/3221 , B01J2219/3222 , B01J2219/32227 , B01J2219/32272 , B01J2219/32408 , B01J2219/32416 , B01J2219/326 , Y02P20/154 , Y10S62/906
摘要： Packing elements with a low pressure drop for mass transfer column internals of the internal diameter of the column and of a height of from 40 to 300 mm made of dimensionally stable layers, which have an ordered structure and are in mutual contact, of cloth material or cloth-like material with a specific surface area of from 100 to 2000 m.sup.2 /m.sup.3, whereina) the shaped layers of cloth material or cloth-like material, preferably made of metal cloth, which are in mutual contact are arranged so that they form a multiplicity of narrow flow channels, preferably virtually triangular, virtually rectangular or else virtually equilateral hexagonal flow channels, in which the angle of inclination of the serration of the individual cloth layers of the packing to the column axis is only 0 to 25.degree., preferably 3 to 14.degree., andb) to ensure mechanical stability of the packing elements, if necessary wires or thin rods are fixed in suitable arrangement between the cloth layers, or else the cloth layers are firmly connected at some points of contact, and processes for obtaining pure substances from substance mixtures by rectification using the novel packing elements.
摘要翻译： PCT No.PCT / EP96 / 02851 Sec。 371日期：1998年1月7日 102（e）1998年1月7日PCT PCT 1996年6月29日PCT公布。出版物WO97 / 02890 日期1997年1月30日对于具有有序结构并且相互接触的由尺寸稳定的层制成的用于内部直径的柱的内径的质量传递柱内部和40至300mm的高度的低压降的元件的比表面积为100〜2000m 2 / m 3的布料或布状材料，其中a）相互接触的优选由金属布制成的布料或布状材料的成形层是排列成使得它们形成多个窄流动通道，优选实际上为三角形，实质上为矩形或虚拟的等边六边形流动通道，其中填料的单个布层与柱轴线的锯齿形倾斜角仅为0° 至25°，优选3至14°，以及b）确保包装元件的机械稳定性，如有必要，线或细杆以合适的布置固定在布层之间，或els 布层在某些接触点处牢固连接，并且通过使用新的包装元件通过整流从物质混合物中获得纯物质的过程。

5. 发明授权

US6096907A Process for preparing chromanol derivatives 失效
标题翻译：色原醇衍生物的制备方法
公开(公告)号：US6096907A
公开(公告)日：2000-08-01
申请号：US395774
申请日：1999-09-14
申请人： Kai-Uwe Baldenius , Bernhard Bockstiegel , Hagen Jaedicke , Detlef Ruff , Carsten Siedenbiedel , Rainer Sturmer
发明人： Kai-Uwe Baldenius , Bernhard Bockstiegel , Hagen Jaedicke , Detlef Ruff , Carsten Siedenbiedel , Rainer Sturmer
IPC分类号： C07D311/70 , C07D311/72 , C07D311/76
CPC分类号： C07D311/72 , Y02P20/55
摘要： A process for preparing chromanol derivatives of the formula I ##STR1## where n is from 1 to 10,R.sup.1, R.sup.2,R.sup.3, R.sup.4 independently of one another are hydrogen or C.sub.1 -C.sub.4 alkyl,R.sup.5 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.6 -C.sub.10 aryl, C.sub.7 -C.sub.18 aralkyl, C.sub.7 -C.sub.18 alkylaryl, C.sub.1 -C.sub.22 acyl, or a group protecting the hydroxyl,by reduction of the corresponding 4-oxochromanol derivatives of the formula II ##STR2## comprises reacting the 4-oxochromanol derivatives of the formula II with metallic zinc in the presence of an acid or an acid mixture.Compounds of the formula I having C.sub.1 -C.sub.22 acyl as radical R.sup.5 can also be prepared by the above-described reduction of the compounds of the formula II with hydrogen as radical R.sup.5 and simultaneous or subsequent esterification.
摘要翻译：一种制备式I的色原烷醇衍生物的方法，其中n为1至10，R 1，R 2，R 3，R 4彼此独立地为氢或C 1 -C 4烷基，R 5为氢，C 1 -C 4烷基，C 6 -C 10芳基，C 7 -C 18芳烷基，C 7 -C 18烷基芳基，C 1 -C 22酰基或保护羟基的基团，通过还原相应的式II的4-氧杂铬醇衍生物包括使式II的4-氧杂铬醇衍生物与金属锌在酸或酸的混合物存在下进行。具有作为自由基R5的C 1 -C 22酰基的式I化合物也可以通过上述将式II化合物以氢作为自由基R5还原并同时或随后进行酯化来制备。

6. 发明授权

US5041572A Preparation of 2,3,5-trimethyl-p-benzoquinone 失效
标题翻译：制备2,3,5-三甲基 - 对苯醌
公开(公告)号：US5041572A
公开(公告)日：1991-08-20
申请号：US493103
申请日：1990-03-13
申请人： Ulrich Hoercher , Barbara Jessel , Bernhard Bockstiegel , Paul Grafen , Harald Laas
发明人： Ulrich Hoercher , Barbara Jessel , Bernhard Bockstiegel , Paul Grafen , Harald Laas
IPC分类号： B01J27/122 , C07B61/00 , C07C46/08 , C07C50/02
CPC分类号： C07C46/08
摘要： 2,3,5-Trimethyl-p-benzoquinone is prepared by oxidation of trimethylphenol with oxygen or an oxygen-containing gas in the presence of a catalyst containing a copper(II) halide in a two-phase reaction medium consisting of water and an aliphatic alcohol at elevated temperatures by a process in which the reaction is carried out in a mixture of water and a saturated aliphatic alcohol of 12 to 18 carbon atoms, having a flashpoint greater than 120.degree. C., such as 1-dodecanol, 1-tetradecanol, 1-hexadecanol or 1-octadecanol, in particular 1-dodecanol, and at from 60.degree. to 100.degree. C.Particularly good yields of TMQ are obtained if the reaction is carried out in the presence of a copper(II) halide, such as CuCl.sub.2 or CuBr.sub.2, and of an alkaline earth metal halide, in particular CaCl.sub.2 or MgCl.sub.2, or of an alkali metal halide, in particular LiCl or NaCl, as the catalyst system.
摘要翻译：通过在含有卤化铜（II）的催化剂存在下，用氧或含氧气体氧化三甲基苯酚，制备2,3,5-三甲基对苯醌，所述两相反应介质由水和脂族醇在高温下通过反应在水和12至18个碳原子的饱和脂族醇的混合物中进行的方法进行，其闪点大于120℃，如1-十二醇，1- 十四烷醇，1-十六烷醇或1-十八烷醇，特别是1-十二烷醇，以及60-100℃。如果反应在卤化铜（II）存在下进行，则得到特别好的收率的TMQ，例如CuCl 2或CuBr 2，以及碱土金属卤化物，特别是CaCl 2或MgCl 2，或碱金属卤化物，特别是LiCl或NaCl，作为催化剂体系。

7. 发明授权

US06828468B2 Preparation of higher &agr;, &bgr;-unsaturated alcohols 失效
标题翻译：制备较高级的α，β-不饱和醇
公开(公告)号：US06828468B2
公开(公告)日：2004-12-07
申请号：US10138338
申请日：2002-05-06
申请人： Andreas Ansmann , Jochem Henkelmann , Alois Kindler , Heinz Etzrodt , Carsten Oost , Susanne Stutz , Christian Tragut , Bernhard Bockstiegel , Klaus Reimer , Manfred Stroezel , Walter Dobler
发明人： Andreas Ansmann , Jochem Henkelmann , Alois Kindler , Heinz Etzrodt , Carsten Oost , Susanne Stutz , Christian Tragut , Bernhard Bockstiegel , Klaus Reimer , Manfred Stroezel , Walter Dobler
IPC分类号： C07C3304
CPC分类号： C07C49/203 , B01J23/44 , B01J23/50 , B01J35/04 , B01J35/06 , B01J37/0225 , C07C29/17 , C07C29/42 , C07C45/62 , C07C45/676 , C07C33/02 , C07C33/048 , C07C49/04
摘要： Higher &agr;,&bgr;-unsaturated alcohols are prepared by monoethynylation of a ketone by the NH3/KOH method, if desired hydrogenation of the acetylene alcohol in the presence of hydrogen over a Pd-containing thin layer catalyst, purifying distillation of the hydrogenation product, preferably in a dividing wall column with recirculation of the unreacted ketone to the ethynylation step, and, if desired, preparation of higher alcohols having in each case 5 more carbon atoms in the chain by reacting the alcohols prepared by monoethynylation and, if desired, partial hydrogenation with alkyl acetoacetates diketene in a Carroll reaction to form ketones and using these as starting materials for the steps ethynylation, optional hydrogenation and fractional distillation.
摘要翻译：如果需要在氢气存在下在含Pd的薄层催化剂上氢化乙炔醇，纯化氢化产物的蒸馏，优选的是通过NH 3 / KOH方法将酮单异构化制备较高级的α，β-不饱和醇在具有未反应酮再循环至乙炔化步骤的分隔壁塔中，并且如果需要，通过使通过单异丁烯基化制备的醇和如果需要的话进行部分氢化制备在各种情况下在链中多出5个碳原子的高级醇在Carroll反应中使用烷基乙酰乙酸酯双烯酮形成酮，并将其用作步骤乙炔化，任选的氢化和分馏的起始原料。

8. 发明授权

US06297404B1 Process for preparing oxoisophorone using additives 失效
标题翻译：使用添加剂制备氧代异佛尔酮的方法
公开(公告)号：US06297404B1
公开(公告)日：2001-10-02
申请号：US09598245
申请日：2000-06-21
申请人： Martin Jochen Klatt , Thomas Müller , Bernhard Bockstiegel
发明人： Martin Jochen Klatt , Thomas Müller , Bernhard Bockstiegel
IPC分类号： C07C4532
CPC分类号： B01J31/2243 , B01J2531/0252 , B01J2531/72 , B01J2531/90 , C07C45/34 , C07C49/603
摘要： The present invention relates to a process for preparing 3,5,5-trimethylcyclohex-2-ene-1,4-dione (oxoisophorone; OIP) by oxidation of 3,5,5-trimethylcyclohex-3-en-1-one (&bgr;-isophorone, &bgr;-IP) with molecular oxygen in the presence of a solvent, of a base and of a transition metal salen derivative as catalyst and of an additive.
摘要翻译：本发明涉及通过3,5,5-三甲基环己-3-烯-1-酮的氧化制备3,5,5-三甲基环己-2-烯-1,4-二酮（氧合异佛尔酮; OIP）的方法 β-异佛尔酮，β-IP）与分子氧在溶剂，碱和过渡金属salen衍生物作为催化剂和添加剂的存在下反应。

9. 发明授权

US06365790B2 Preparation of C10-C30-alkenes by partial hydrogenation of alkynes over fixed-bed supported palladium catalysts 失效
标题翻译：通过固定床负载的钯催化剂上的炔进行部分氢化制备C10-C30-烯烃
公开(公告)号：US06365790B2
公开(公告)日：2002-04-02
申请号：US09734024
申请日：2000-12-12
申请人： Klaus Reimer , Gerd Kaibel , Ulrich Kammel , Franz Josef Bröcker , Andreas Ansmann , Heinz Etzrodt , Manfred Stroezel , Mathias Haake , Lothar Laupichler , Bernhard Bockstiegel
发明人： Klaus Reimer , Gerd Kaibel , Ulrich Kammel , Franz Josef Bröcker , Andreas Ansmann , Heinz Etzrodt , Manfred Stroezel , Mathias Haake , Lothar Laupichler , Bernhard Bockstiegel
IPC分类号： C07C2900
CPC分类号： C07C29/17 , B01J23/44 , B01J23/50 , B01J35/04 , B01J35/06 , B01J37/0217 , B01J37/0225 , B01J37/08 , C07C5/09 , C07C2523/44 , C07C11/02 , C07C33/025 , C07C33/02
摘要： Alkenes are prepared by partial hydrogenation of alkynes in the liquid phase at from 20 to 250° C. and hydrogen partial pressures of from 0.3 to 200 bar over fixed-bed supported palladium catalysts which are obtainable by heating the support material in the air, cooling, applying a palladium compound and, if required, additionally other metal ions for doping purposes, molding and processing to give monolithic catalyst elements, by a process in which A) alkynes of 10 to 30 carbon atoms are used as starting compounds, B) the palladium compound and, if required, the other metal ions are applied to the support material by impregnation of the heated and cooled support material with a solution containing palladium salts and, if required, other metal ions and subsequent drying, and C) from 10 to 2000 ppm of carbon monoxide (CO) are added to the hydrogenation gas or a corresponding amount of CO is allowed to form in the liquid phase by slight decomposition of a compound which is added to the reaction mixture and eliminates CO under the reaction conditions. The process is particularly advantageous if the partial hydrogenation is carried out in a tube reactor by the trickle-bed or liquid phase procedure with product recycling at cross-sectional loadings of from 20 to 500 m3/m2*h. The process is particularly suitable for the preparation of 3,7,11,15-tetramethyl-1-hexadecen-3-ol (isophytol), 3,7,11-trimethyl-l-dodecen-3-ol (tetrahydronerolidol), 3,7,11-trimethyl-1,4-dodecadien-3-ol, 3,7,11-trimethyl-1,6-dodecadien-3-ol (dihydronerolidol), 3,7-dimethyloct-1,6-dien-3-ol or 3,7-dimethyloct-1-en-3-ol from the corresponding alkynes.
摘要翻译：烯烃通过液相中炔烃在20至250℃的部分氢化和固定床负载的钯催化剂的0.3至200巴的氢分压来制备，其可通过加热空气中的载体材料，冷却使用钯化合物，另外还需要另外的金属离子用于掺杂目的，通过使用10-30个碳原子的炔烃作为起始化合物的方法，模塑和加工以得到整体式催化剂元素，B）钯如果需要，另外的金属离子通过用含有钯盐的溶液浸渍加热和冷却的载体材料以及如果需要的话其它金属离子并随后干燥而被施加到载体材料上，C）为10-2000ppm 的一氧化碳（CO）加入到氢化气体中，或者相应量的CO在液相中形成，通过轻微分解添加到真空中的化合物并且在反应条件下消除CO。如果部分氢化在管式反应器中通过滴流床或液相方法进行，则该方法是特别有利的，其中产物回收的横截面负荷为20-500m 3 / m2 * h。该方法特别适用于制备3,7,11,15-四甲基-1-十六碳烯-3-醇（异山梨糖醇），3,7,11-三甲基-1-十二碳烯-3-醇（四氢化吗啉醇），3 ，7,11-三甲基-1,4-十二碳二烯-3-醇，3,7,11-三甲基-1,6-十二碳二烯-3-醇（二氢吗啉醇），3,7-二甲基辛-1,6-二烯 - 3-醇或3,7-二甲基辛-1-烯-3-醇。

10. 发明授权

US6051741A Preparation of .gamma.,.delta.-unsaturated ketones by the Carroll reaction, novel catalysts therefor and the preparation thereof 失效
标题翻译：通过Carroll反应制备γ，δ-不饱和酮，其新型催化剂及其制备
公开(公告)号：US6051741A
公开(公告)日：2000-04-18
申请号：US168378
申请日：1998-10-08
申请人： Heinz Etzrodt , Dietmar Weller , Carsten Oost , Hagen Jaedicke , Manfred Stroezel , Bernhard Bockstiegel , Lothar Laupichler , Klaus Reimer
发明人： Heinz Etzrodt , Dietmar Weller , Carsten Oost , Hagen Jaedicke , Manfred Stroezel , Bernhard Bockstiegel , Lothar Laupichler , Klaus Reimer
IPC分类号： B01J31/02 , B01J31/14 , C07B61/00 , C07C45/67 , C07C45/68 , C07C49/203 , C07F5/06 , C07C45/00
CPC分类号： C07F5/069 , B01J31/0211 , C07C45/676
摘要： A process for preparing .gamma.,.delta.-unsaturated ketones of the general formula I ##STR1## by reacting an allyl alcohol of the general formula II ##STR2## in which R.sup.1 is H or a hydrocarbon radical having 1 to 20 carbon atoms, with diketene or an alkyl acetoacetate of the general formula III ##STR3## in which R.sup.2 is alkyl having 1 to 4 carbon atoms in an unmodified or modified Carroll reaction in the presence of an aluminum catalyst, wherein aluminum compounds which are stable liquids at room temperature, or a mixture of such aluminum compounds, which comprise at least one radical formed from an alkyl acetoacetate and 1 or 2 alkoxy radicals, or else comprise exclusively radicals formed from alkyl acetoacetates, which are esterified with sec-butanol or isobutanol, or else are esterified with at least two different alcohols, are used as aluminum catalyst. Also claimed are the novel mixtures of aluminum compounds which comprise radicals which are formed exclusively from alkyl acetoacetates and are esterified with at least two different alkanols, and the batchwise and continuous preparation of the liquid aluminum catalysts.
摘要翻译：通过使通式II的烯丙醇（其中R 1为H或具有1至20个碳原子的烃基）的烯丙醇与二烯酮或一般的乙酰乙酸烷基酯反应制备通式I的γ，β-不饱和酮的方法式III其中R2是在未改性或改性的Carroll反应中在铝催化剂存在下具有1至4个碳原子的烷基，其中在室温下为稳定液体的铝化合物或这种铝化合物的混合物，其包含在由烷基乙酰乙酸酯和1或2个烷氧基形成的至少一个基团，或者仅由烷基乙酰乙酸酯形成的由仲丁醇或异丁醇酯化的酰基或者由至少两种不同的醇酯化的基团用作铝催化剂。还要求的是铝化合物的新型混合物，其包含仅由乙酰乙酸烷基酯形成并且与至少两种不同的链烷醇酯化的基团，以及液体铝催化剂的分批连续制备。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式