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    • 18. 发明授权
    • Concerted process for the production of an alkenyl substituted aromatic compound
    • 用于生产烯基取代的芳族化合物的协调方法
    • US06852896B2
    • 2005-02-08
    • US10268803
    • 2002-10-11
    • John E. Stauffer
    • John E. Stauffer
    • C07C2/86C07C17/156C07C1/20
    • C07C17/156C07C2/861Y02P20/125C07C15/02
    • An integrated process of preparing a C2-5 alkenyl-substituted aromatic compound using a C6-12 aromatic compound and a C2-5 alkane as raw materials. The process involves two reaction steps operating in tandem, the first reaction step reacts the C6-12 aromatic compound with hydrogen chloride and molecular oxygen in the presence of a catalyst to yield water and mono-, di-, tri-, and higher chlorinated aromatic adducts. The chlorinated compounds from the first reaction step are reacted with ethane in the second reaction step to produce alkane-substituted aromatic compounds which spontaneously dehydrogenate to an alkenyl-substituted aromatic compound and hydrogen chloride. After separating the alkenyl-substituted aromatic product from the hydrogen chloride, the hydrogen chloride is recycled to the first reaction step so that there is no net production or consumption of hydrogen chloride.
    • 使用C6-12芳香族化合物和C2-5烷烃作为原料制备C2-5烯基取代的芳族化合物的综合方法。 该方法包括串联操作的两个反应步骤,第一反应步骤在催化剂存在下使C6-12芳族化合物与氯化氢和分子氧反应,得到水和一,二,三和高级氯代芳族化合物 加合物 在第二反应步骤中将来自第一反应步骤的氯化化合物与乙烷反应,以生成烷基取代的芳族化合物,其自发脱氢至烯基取代的芳族化合物和氯化氢。 在将烯基取代的芳族化合物与氯化氢分离后,将氯化氢循环至第一反应步骤,使得不产生或消耗氯化氢。
    • 19. 发明授权
    • Process for the preparation of substituted aromatic compound employing friedel-crafts reaction using a reusable basic anionic clay catalyst
    • 使用可重复使用的碱性阴离子粘土催化剂使用Friedel-Crafts反应制备取代的芳族化合物的方法
    • US06548722B1
    • 2003-04-15
    • US09685682
    • 2000-10-10
    • Vasant Ramchandra ChoudharySuman Kumar Jana
    • Vasant Ramchandra ChoudharySuman Kumar Jana
    • C07C30900
    • C07C41/30C07C2/861C07C2/864C07C45/46C07C201/12C07C2521/10C07C2523/08C07C2527/236C07C2603/24C07C15/16C07C49/784C07C49/83C07C49/84C07C49/786C07C205/06C07C15/12C07C15/28C07C43/205
    • A process for Friedel-Crafts type liquid-phase alkylation or acylation of an aromatic compound using a hydrotalcite-type basic anionic clay catalyst represented by a formula: [(M2−)1−x(M3+)x(OH)2]x+[Ay−]x/yqH2O where M2+ is a divalent cation selected from Mg2+, Zn2+, Ni2+, Co2+, Mn2+, Cu2+ or a mixture thereof; M3+ is a trivalent cation selected from Ga3+, In3+ Al3+, Fe3+ Cr3+ or a mixture thereof; x is a mole fraction of trivalent cations in the range of about 0.05 to about 0.5; 0 is oxygen; H is hydrogen; Ay− is an anion; y minus is an anionic negative charge having a value of 1 minus or 2 minus; and q is a number of water molecules, as the water of hydration; and involving following steps: i. pretreating said catalyst by contacting it with a halogen containing compound in the presence or absence of a non-aqueous solvent and optionally washing the pretreated catalyst with non-aqueous solvent or liquid aromatic compound to be alkylated or acylated; and then ii. contacting a liquid reaction mixture comprising said aromatic compound and said alkylating or acylating agent in the presence or absence of a non-aqueous solvent with the catalyst obtained from step (i) in a stirred batch reactor fitted with a reflux condenser under vigorous stirring, in the presence or absence of an inert gas bubbling through the reaction mixture, at effective reaction conditions; iii. cooling the reaction mixture to a temperature about 30° C., removing said catalyst from the reaction mixture by filtration and then separating the reaction products from the reaction mixture, and optionally washing the used catalyst by non-aqueous solvent, and if desired, iv. reusing the used catalyst directly with or without drying for the subsequent reaction batch avoiding step (i), is disclosed.
    • 使用由下式表示的水滑石型碱性阴离子粘土催化剂,使用Friedel-Crafts型液相烷基化或芳族化合物酰化的方法:其中M2 +是选自Mg2 ​​+,Zn2 +,Ni2 +,Co2 +,Mn2 +,Cu2 +或 其混合物; M3 +是选自Ga3 +,In3 + Al3 +,Fe3 + Cr3 +或其混合物的三价阳离子; x是三价阳离子在约0.05至约0.5范围内的摩尔分数; 0是氧; H是氢; Ay-是阴离子; y minus是具有值1或2减去的阴离子负电荷; 和q是水分子的数量,作为水合水; 并涉及以下步骤:i。 在存在或不存在非水溶剂的情况下,通过使其与含卤素的化合物接触来预处理所述催化剂,并任选地用待进行烷基化或酰化的非水溶剂或液体芳族化合物洗涤预处理的催化剂; 然后。 在非水溶剂存在或不存在下,将含有所述芳族化合物和所述烷基化或酰化剂的液体反应混合物与步骤(i)获得的催化剂在剧烈搅拌下在装有回流冷凝器的搅拌间歇式反应器中接触, 在有效的反应条件下存在或不存在通过反应混合物鼓泡的惰性气体; iii。 将反应混合物冷却至约30℃的温度,通过过滤从反应混合物中除去所述催化剂,然后将反应产物与反应混合物分离,并任选地通过非水溶剂洗涤所用催化剂,如果需要,将iv 。 公开了直接使用或不用干燥后续反应批次的用过的催化剂,以避免步骤(i)。