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    • 5. 发明授权
    • Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor
    • 用于烷基取代的芳族化合物的侧链酰氧基化方法和用于其的催化剂的方法
    • US06278019B1
    • 2001-08-21
    • US09284815
    • 1999-05-27
    • Jiro NakataniEiichi MinomiyaTetsuya KatoSatoru Miyata
    • Jiro NakataniEiichi MinomiyaTetsuya KatoSatoru Miyata
    • C07C6364
    • C07C67/00B01J21/18B01J23/002B01J23/80B01J27/128B01J29/106B01J29/46B01J29/7215B01J37/03B01J37/088C07C67/035C07C67/39C07C253/30C07C69/007C07C69/16C07C69/157C07C69/63C07C255/55
    • The present invention is a method for acyloxylating an alkyl group substituted aromatic compound at the side chain, by letting the alkyl group substituted aromatic compound and a carboxylic acid and/or a carboxylic anhydride react with each other in the presence of an oxygen containing gas. In this case, if (1) a solid catalyst in which at least one selected from cobalt, cerium and manganese is supported on a solid material or (2) a catalyst containing at least one selected from cobalt oxides, cerium oxides and manganese oxides is used, an alkali group substituted aromatic compound and a carboxylic acid and/or a carboxylic anhydride can be caused to react with each other efficiently in the presence of an oxygen containing gas, and in addition the catalyst can be easily separated from the reaction solution. Furthermore, (3) a compound diacyloxylated at the side chains can be highly selectively produced if a cerium compound is used as a catalyst in the absence of a cobalt compound and a manganese compound. Moreover, the present invention relates to a method for producing a cinnamic acid by letting a benzylidene diacetate react in the presence of a basic catalyst. The alkyl group substituted aromatic compounds acyloxylated and diacyloxylated at the side chain obtained in the present invention are useful for perfumes, and the benzyl alcohols and benzaldehydes obtained by hydrolyzing them are useful for intermediate products of agricultural chemicals, drugs and perfumes and also for resin additives. The cinnamic acids produced according to the present invention are useful for intermediate products of agricultural chemicals, drugs and perfumes.
    • 本发明是通过在含氧气体的存在下使烷基取代的芳香族化合物和羧酸和/或羧酸酐反应而使侧链上的烷基取代芳香族化合物酰化而成的方法。 在这种情况下,如果(1)其中选自钴,铈和锰中的至少一种负载在固体材料上的固体催化剂或(2)含有选自氧化钴,氧化铈和氧化锰中的至少一种的催化剂是 使用时,可以在含氧气体的存在下使碱基取代的芳香族化合物和羧酸和/或羧酸酐有效反应,另外,催化剂也容易与反应溶液分离。 此外,如果在没有钴化合物和锰化合物的情况下使用铈化合物作为催化剂,则可以高选择性地制备(3)侧链二酰氧基化的化合物。此外,本发明涉及一种制备 通过使亚苄基二乙酸酯在碱性催化剂存在下反应,得到肉桂酸。在pr中获得的侧链上被酰氧基化和二酰氧基化的烷基取代的芳族化合物 本发明可用于香料,通过水解获得的苄醇和苯甲醛可用于农药,药物和香料以及树脂添加剂的中间产物。 根据本发明生产的肉桂酸可用于农药,药物和香料的中间产物。
    • 8. 发明授权
    • Method for producing aromatic compounds having alkyl group with at least three carbon atoms
    • 制备具有至少3个碳原子的烷基的芳族化合物的方法
    • US06462248B1
    • 2002-10-08
    • US09385270
    • 1999-08-30
    • Jiro NakataniEiichi MinomiyaMasahiro InoharaKazuyoshi IwayamaTetsuya Kato
    • Jiro NakataniEiichi MinomiyaMasahiro InoharaKazuyoshi IwayamaTetsuya Kato
    • C07C2508
    • C07C17/358C07C5/2737C07C17/12C07C17/35C07C17/389C07C2529/08C07C15/02C07C25/02
    • Aromatic compounds having an alkyl group with at least 3 carbon atoms are produced in a process comprising at least one of the following steps: (1) a step of contacting a starting material that contains an aromatic compound having a branched alkyl group with at least 3 carbon atoms, with a zeolite-containing catalyst in a liquid phase in the presence of hydrogen therein, thereby changing the position of the carbon atoms of the alkyl group bonding to the aromatic ring of the compound; (2) a step of contacting a starting material that contains an aromatic compound having a branched alkyl group with at least 3 carbon atoms, with a catalyst containing zeolite and containing rhenium and/or silver, in a liquid phase, thereby changing the position of the carbon atoms of, the alkyl group bonding to the aromatic ring of the compound; (3) a step of contacting a halogenated aromatic compound having an alkyl group with at least 3 carbon atoms, with an acid-type catalyst, thereby isomerizing the compound; (4) a step of treating a mixture of isomers of an aromatic compound having an alkyl group with at least 3 carbon atoms, with a zeolite adsorbent that contains at least one exchangable cation selected from alkali metals, alkaline earth metals, lead, thallium and silver, thereby separating a specific isomer from the isomer mixture through adsorption.
    • 具有至少3个碳原子的烷基的芳香族化合物是以至少一个以下步骤的方法生产的:(1)使包含具有支链烷基的芳族化合物的原料与至少3个 碳原子与含有沸石的催化剂在氢气存在下在液相中,从而改变与化合物的芳环键合的烷基的碳原子的位置;(2)使起始 含有具有至少3个碳原子的支链烷基的芳族化合物的物质,含有沸石的催化剂,含有铼和/或银的液相,从而改变了烷基键合的碳原子的位置 化合物的芳香环;(3)使具有至少3个碳原子的烷基的卤代芳族化合物与酸型催化剂接触的步骤,从而使组合物异构化 (4)将具有至少3个碳原子的具有烷基的芳族化合物的异构体的混合物与沸石吸附剂一起处理的步骤,所述沸石吸附剂含有至少一种选自碱金属,碱土金属,铅, 铊和银,从而通过吸附从异构体混合物中分离出特定异构体。