-
公开(公告)号：US4620056A
公开(公告)日：1986-10-28
申请号：US770506
申请日：1985-08-28
IPC分类号： C07C2/66 , B01J23/00 , B01J23/04 , B01J27/00 , B01J27/232 , C07B61/00 , C07C1/00 , C07C2/72 , C07C13/465 , C07C15/02 , C07C15/067 , C07C15/24 , C07C67/00 , C07C2/64
CPC分类号： C07C2/72 , C07C2523/04 , C07C2527/232
摘要： A method for producing an aromatic hydrocarbon easily and safely without the use of carrier-supported catalyst and is characterized in that an unsaturated compound having a double bond or bonds that are conjugated with the benzene ring is allowed to coexist in the process to alkylate a substituted aromatic hydrocarbon with olefins in the presence of 5 mM or more of metallic sodium and potassium compound to provide 3 mM or more of potassium ions relative to 1 mole of the substituted aromatic hydrocarbon, said substituted aromatic hydrocarbon having at least one alkyl group or alkylene group which has at least one hydrogen atom in the .alpha.-position relative to the aromatic ring of said substituted aromatic hydrocarbon.
摘要翻译： 在不使用载体负载型催化剂的情况下，容易且安全地制造芳香族烃的方法，其特征在于，使具有与苯环共轭的双键或键的不饱和化合物共存于烷基化取代基 在5mM或更多种金属钠和钾化合物的存在下，使烯烃与芳族烃反应，以提供相对于1摩尔取代芳烃为3mM或更多的钾离子，所述取代芳族烃具有至少一个烷基或亚烷基 其相对于所述取代的芳族烃的芳香环在α位具有至少一个氢原子。
-
公开(公告)号：US4855519A
公开(公告)日：1989-08-08
申请号：US271219
申请日：1988-11-14
CPC分类号： C07C15/40 , C07C4/00 , C07C2521/04 , C07C2521/08 , C07C2521/12 , C07C2521/14 , C07C2521/16 , C07C2523/28 , C07C2523/30 , C07C2523/42 , C07C2523/44 , C07C2523/46 , C07C2523/75 , C07C2523/755 , C07C2527/054 , C07C2527/11 , C07C2527/173 , C07C2529/04 , C07C2531/025
摘要： A method for producing arylethylene comprising four steps of: (I) bringing 1,1-diarylethane into contact with an acid catalyst in the presence of an inert gas to crack said compound into arylethylenes and alkylbenzenes; (II) separating the reaction mixture obtained in the above cracking step (I) into at least a fraction mainly containing 1,1-diarylethane; (III) bringing said fraction mainly containing 1,1-diarylethane into contact with hydrogen gas in the presence of a hydrogenation catalyst; and (IV) re-cracking hydrogenated fraction obtained in the preceding hydrogenation step (III) by bringing it into said cracking step (I).Particularly, this method is useful for producing p-isobutylstyrene which is a starting material for preparing a valuable medicine of ibuprofen.
-
3.发明授权Method for producing .alpha.-(p-isobutylphenyl)propionic acid or its alkyl esters 失效α-（对异丁基苯基）丙酸或其烷基酯的制备方法
公开(公告)号：US4694100A
公开(公告)日：1987-09-15
申请号：US753403
申请日：1985-07-10
申请人： Isoo Shimizu , Ryotaro Hirano , Yasuo Matsumura , Hideki Nomura , Kazumichi Uchida , Atsushi Sato
发明人： Isoo Shimizu , Ryotaro Hirano , Yasuo Matsumura , Hideki Nomura , Kazumichi Uchida , Atsushi Sato
CPC分类号： C07C51/14 , C07C4/00 , C07C45/50 , C07C51/29 , C07C2521/12 , C07C2521/16 , C07C2527/054 , C07C2527/173 , C07C2529/04 , C07C2531/025 , Y02P20/582
摘要： A method for producing .alpha.-(p-isobutylphenyl)propionic acid or its alkyl esters which is characterized in that starting materials are inexpensive, processes are easy to be done and products are highly pure. The method comprises the steps of (I): catalytically cracking 1,1-bis(p-isobutylphenyl)ethane at temperatures in the range of 200.degree. to 650.degree. C. in the presence of a protonic acid catalyst and/or a solid acid catalyst to produce isobutylbenzene and p-isobutylstyrene; and (II): reacting said p-isobutylstyrene with carbon monoxide and water or alcohol at temperatures in the range of 40.degree. to 150.degree. C. in the presence of a metal complex carbonylation catalyst to produce .alpha.-(p-isobutylphenyl)propionic acid or its alkyl ester; or (III): reacting said p-isobutylstyrene with carbon monoxide and hydrogen at temperatures in the range of 40.degree. to 150.degree. C. in the presence of a metal complex carbonylation catalyst to produce .alpha.-(p-isobutylphenyl)propionaldehyde and then oxidizing said .alpha.-(p-isobutylphenyl)propionaldehyde to produce .alpha.-(p-isobutylphenyl)propionic acid. The recovered isobutylene is recycled to produce 1,1-bis(p-isobutylphenyl)ethane by reaction with acetaldehyde in the presence of sulfuric acid.
摘要翻译： 一种生产α-（对异丁基苯基）丙酸或其烷基酯的方法，其特征在于起始材料便宜，方法易于进行，产物是高纯度的。 该方法包括以下步骤：（I）：在质子酸催化剂和/或固体酸存在下，在200至650℃的温度范围内催化裂化1,1-双（对异丁基苯基）乙烷 催化剂生产异丁苯和对异丁基苯乙烯; 和（II）：在金属络合物羰基化催化剂存在下，使所述对异丁基苯乙烯与一氧化碳和水或醇在40-150℃的温度下反应，得到α-（对异丁基苯基）丙酸 或其烷基酯; 或（III）：在金属络合物羰基化催化剂存在下，使所述对异丁基苯乙烯与一氧化碳和氢气在40-150℃的温度下反应，生成α-（对异丁基苯基）丙醛，然后氧化 所述α-（对异丁基苯基）丙醛生成α-（对异丁基苯基）丙酸。 通过在硫酸存在下与乙醛反应，回收的异丁烯被再循环以产生1,1-双（对异丁基苯基）乙烷。
-
4.发明授权
公开(公告)号：US4827065A
公开(公告)日：1989-05-02
申请号：US753384
申请日：1985-07-10
申请人： Isoo Shimizu , Ryotaro Hirano , Yasuo Matsumura , Hideki Nomura , Kazumichi Uchida , Atsushi Sato
发明人： Isoo Shimizu , Ryotaro Hirano , Yasuo Matsumura , Hideki Nomura , Kazumichi Uchida , Atsushi Sato
CPC分类号： C07C4/00 , C07C15/16 , C07C15/46 , C07C51/29 , C07C2521/12 , C07C2521/16 , C07C2527/054 , C07C2527/173 , C07C2529/04 , C07C2531/025 , Y02P20/582
摘要： A method for producing p-isobutylstyrene which is characterized in that starting materials are inexpensive, processes are easy to be done and products are highly pure. The method comprises the step of catalytically cracking 1,1-bis(p-isobutylphenyl)ethane at temperatures in the range of 200.degree. to 650.degree. C. in the presence of a protonic acid catalyst and/or a solid acid catalyst to produce p-isobutylstyrene and isobutylbenzene, and at least a portion of said isobutylbenzene is recycled to produce said 1,1-bis(p-isobutylphenyl)ethane by reaction with acetaldehyde in the presence of sulfuric acid.
摘要翻译： 一种生产对异丁基苯乙烯的方法，其特征在于起始材料便宜，易于制备方法，产物是高纯度的。 该方法包括在质子酸催化剂和/或固体酸催化剂存在下，在200〜650℃的温度范围内催化裂化1,1-双（对异丁基苯基）乙烷的步骤，生成p - 异丁基苯乙烯和异丁基苯，并且至少部分所述异丁基苯在硫酸存在下与乙醛反应再循环以产生所述1,1-双（对异丁基苯基）乙烷。
-
公开(公告)号：US4835337A
公开(公告)日：1989-05-30
申请号：US165730
申请日：1988-03-09
申请人： Isoo Shimizu , Yasuo Matsumura , Kazumichi Uchida
发明人： Isoo Shimizu , Yasuo Matsumura , Kazumichi Uchida
CPC分类号： C07C6/126 , C07C2527/1206 , C07C2527/1213 , C07C2527/125 , C07C2527/126 , C07C2529/08
摘要： A method for producing efficiently a highly pure 1-(m-ethylphenyl)-1-phenylethane or m-ethylphenylphenylmethane which are used as the starting materials for preparing medicines and other organic compounds. The method comprises the step of reacting a diaryl compound with benzene or alkylbenzene in the presence of an acid catalyst selected from the group consisting of AlCl.sub.3, AlBr.sub.3, HF.BF.sub.3 complex and Y-type zeolites.
-
公开(公告)号：US5436402A
公开(公告)日：1995-07-25
申请号：US323600
申请日：1994-10-17
CPC分类号： C07C15/46 , C07C5/277 , C07C5/3335 , C07C5/3337
摘要： A method for preparing a high-purity p-isobutylstyrene is here disclosed which comprises the first step of reacting o- and/or m-isobutylethylbenzene, if necessary, together with isobutylbenzene, in the presence of an acid catalyst in a liquid phase at a reaction temperature of -10.degree. to 600.degree. C. so that the production of sec-butylethylbenzene in butylethylbenzene may not exceed 20% by weight, in order to form a mixture of p-isobutylethylbenzene and sec-butylethylbenzene; and the second step of bringing the mixture of p-isobutylethylbenzene and sec-butylethylbenzene recovered from the first step into contact with a dehydrogenation metal catalyst containing at least one metal selected from the groups Ib, IIb, VIa, VIIa and VIII of the periodic table at a reaction temperature of 300.degree. to 650.degree. C. under a reaction pressure of 50 kg/cm.sup.2 or less in a gaseous phase.
摘要翻译： 这里公开了一种制备高纯度对异丁基苯乙烯的方法，该方法包括如下情况的第一步：在必要时，在酸催化剂存在下，在液相中，在 反应温度为-10℃至600℃，从而在丁基乙基苯中产生仲丁基乙基苯不得超过20重量％，以便形成对异丁基乙基苯和仲丁基乙基苯的混合物; 并且使从第一步骤回收的对异丁基乙基苯和仲丁基乙基的混合物与含有选自元素周期表中的Ib，IIb，VIa，VIIa和VIII族的至少一种金属的脱氢金属催化剂接触的第二步骤 在反应温度为300〜650℃，反应压力为50kg / cm 2以下的气相中。
-
7.发明授权Method for preparing alpha-(4-isobutylphenyl)propionic acid or its precursor 失效制备α-（4-异丁基苯基）丙酸或其前体的方法
公开(公告)号：US5260477A
公开(公告)日：1993-11-09
申请号：US452804
申请日：1989-12-18
CPC分类号： C07C51/14 , C07C45/50 , C07C45/62 , C07C5/3332 , C07C51/255
摘要： A method for preparing .alpha.-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises a step (I) of dehydrogenating p-isobutylethylbenzene in a gaseous phase in the presence of a dehydrogenating metal catalyst to form p-isobutylstyrene and at least one unsaturated hydrocarbon compound selected from a group A defined in Claim 1; a step (II) of reacting p-isobutylstyrene obtained in the step (I) with carbon monoxide and hydrogen or with carbon monoxide and water or a lower alcohol in the presence of a transition metal complex carbonylating catalyst to form .alpha.-(4-isobutylphenyl)propionic acid or its precursor; and a step (III) of hydrogenating at least one unsaturated hydrocarbon compound selected from the group A obtained in the dehydrogenation step (I) to form p-isobutylethylbenzene, and recycling the thus formed p-isobutylethylbenzene through the step (I) as the raw material of the step (I).
-
8.发明授权Method for preparing .alpha.-(4-isobutylphenyl)propionic acid or its precursor 失效制备（ALPHA） - （4-异丁基苯基）丙酸或其前体的方法
公开(公告)号：US5097061A
公开(公告)日：1992-03-17
申请号：US368049
申请日：1989-06-19
CPC分类号： C07C51/14 , C07C2/66 , C07C2/72 , C07C45/50 , C07C5/3335 , C07C51/235 , C07C6/123 , C07C2521/12 , C07C2523/04 , C07C2523/745 , C07C2523/86 , C07C2527/1206 , C07C2531/025 , C07C2531/08
摘要： A method for preparing .alpha.-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises a step A of forming p-isobutylstyrene from p-isobutylethylbenzene and a step B of forming .alpha.-(4-isobutylphenyl)propionaldehyde from p-isobutylstyrene or a step C of forming .alpha.-(4-isobutylphenyl)propionic acid or its alkyl ester from p-isobutylstyrene.Furthermore, a method for preparing said p-isobutylethylbenzene is also disclosed which comprises alkylating isobutylbenzene or 4-ethyltoluene with ethylene or propylene.
-
公开(公告)号：US4734528A
公开(公告)日：1988-03-29
申请号：US904473
申请日：1986-09-08
申请人： Isoo Shimizu , Yasuo Matsumura , Atsushi Sato
发明人： Isoo Shimizu , Yasuo Matsumura , Atsushi Sato
IPC分类号： C07C49/784 , B01J27/00 , C07B61/00 , C07C2/68 , C07C45/00 , C07C45/27 , C07C45/28 , C07C45/64 , C07C45/82 , C07C45/85 , C07C51/12 , C07C67/00
摘要： The present invention provides a method for preparing 3-ethylbenzophenone in a high purity which comprises the steps of alkylating benzene with ethylene in the presence of an alkylating catalyst to obtain an alkylated product composed mainly of unreacted benzene, ethylbenzene, polyethylbenzenes and heavier substances; subjecting the alkylated product to rectification in order to recover therefrom a fraction which has a temperature range of boiling points within the range of 275.degree. to 310.degree. C. (in terms of atmospheric pressure); heating the recovered fraction together with a mixture of nitric acid and water; carrying out purification, if necessary; and performing distillation to recover therefrom 3-ethylbenzophenone represented by the formula (I): ##STR1##
摘要翻译： 本发明提供了一种制备高纯度3-乙基二苯甲酮的方法，包括在烷基化催化剂存在下用乙烯烷基化苯，得到主要由未反应的苯，乙苯，聚乙基苯和较重物质组成的烷基化产物; 对烷基化产物进行精馏以从其中回收沸点温度范围在275〜310℃（按大气压）的馏分。 将回收的馏分与硝酸和水的混合物一起加热; 进行净化，必要时; 并进行蒸馏以从其中回收由式（I）表示的3-乙基二苯甲酮：（I）
-
公开(公告)号：USRE32162E
公开(公告)日：1986-05-27
申请号：US70711
申请日：1979-08-29
申请人： Atsushi Sato , Yoshiaki Aida , Isoo Shimizu
发明人： Atsushi Sato , Yoshiaki Aida , Isoo Shimizu
CPC分类号： B41M5/1655 , C07C2/70 , C07C2527/054 , Y10T428/25 , Y10T428/2984 , Y10T428/31993
摘要： A solvent for the pressure sensitive record material which consists of a normally liquid compound having 13 to 18 Carbon atoms and being represented by the following general formula: ##STR1## in which each of R.sub.1 to R.sub.5 is hydrogen, methyl group or etyl group R.sub.6 is hydrogen, methyl, ethyl, iso-propyl, n-propyl, tert-buthyl or sec-buthyl group; and the preparation method of the above solvent from styrene and C.sub.7 -C.sub.10 aromatic hydrocarbons using sulfuric acid as the catalyst.
-
-
-
-
-
-
-
-
-
搜索结果
47 条记录 (耗时 0.02 秒)
