Methods of making pyrrolidones
    2.
    发明授权
    Methods of making pyrrolidones 有权
    制备吡咯烷酮的方法

    公开(公告)号:US06632951B2

    公开(公告)日:2003-10-14

    申请号:US10280622

    申请日:2002-10-25

    IPC分类号: C07C207263

    摘要: The present invention provides methods for making N-methylpyrrolidine and analogous compounds via hydrogenation. Novel catalysts for this process, and novel conditions/yields are also described. Other process improvements may include extraction and hydrolysis steps. Some preferred reactions take place in the aqueous phase. Starting materials for making N-methylpyrrolidine may include succinic acid, N-methylsuccinimide, and their analogs.

    摘要翻译: 本发明提供了通过氢化制备N-甲基吡咯烷和类似化合物的方法。 还描述了用于该方法的新型催化剂和新的条件/收率。 其他工艺改进可以包括提取和水解步骤。 一些优选的反应发生在水相中。 用于制备N-甲基吡咯烷的原料可包括琥珀酸,N-甲基琥珀酰亚胺及其类似物。

    Methods of making pyrrolidones
    4.
    发明授权
    Methods of making pyrrolidones 有权
    制备吡咯烷酮的方法

    公开(公告)号:US06706893B2

    公开(公告)日:2004-03-16

    申请号:US10280577

    申请日:2002-10-25

    IPC分类号: C07D207267

    摘要: The present invention provides methods for making N-methylpyrrolidine and analogous compounds via hydrogenation. Novel catalysts for this process, and novel conditions/yields are also described. Other process improvements may include extraction and hydrolysis steps. Some preferred reactions take place in the aqueous phase. Starting materials for making N-methylpyrrolidine may include succinic acid, N-methylsuccinimide, and their analogs.

    摘要翻译: 本发明提供了通过氢化制备N-甲基吡咯烷和类似化合物的方法。 还描述了用于该方法的新型催化剂和新的条件/收率。 其他工艺改进可以包括提取和水解步骤。 一些优选的反应发生在水相中。 用于制备N-甲基吡咯烷的原料可包括琥珀酸,N-甲基琥珀酰亚胺及其类似物。

    Hydroxymethylfurfural reduction methods and methods of producing furandimethanol
    8.
    发明授权
    Hydroxymethylfurfural reduction methods and methods of producing furandimethanol 有权
    羟甲基糠醛还原方法和生产呋喃二甲醇的方法

    公开(公告)号:US07994347B2

    公开(公告)日:2011-08-09

    申请号:US11760634

    申请日:2007-06-08

    IPC分类号: C07D307/02

    CPC分类号: C07D307/42 C07D307/46

    摘要: A method of reducing hydroxymethylfurfural (HMF) where a starting material containing HMF in a solvent comprising water is provided. H2 is provided into the reactor and the starting material is contacted with a catalyst containing at least one metal selected from Ni, Co, Cu, Pd, Pt, Ru, Ir, Re and Rh, at a temperature of less than or equal to 250° C. A method of hydrogenating HMF includes providing an aqueous solution containing HMF and fructose. H2 and a hydrogenation catalyst are provided. The HMF is selectively hydrogenated relative to the fructose at a temperature at or above 30° C. A method of producing tetrahydrofuran dimethanol (THFDM) includes providing a continuous flow reactor having first and second catalysts and providing a feed comprising HMF into the reactor. The feed is contacted with the first catalyst to produce furan dimethanol (FDM) which is contacted with the second catalyst to produce THFDM.

    摘要翻译: 提供一种还原羟甲基糠醛(HMF)的方法,其中含有HMF的原料在包含水的溶剂中。 将H2置于反应器中,并使原料与含有至少一种选自Ni,Co,Cu,Pd,Pt,Ru,Ir,Re和Rh的金属的催化剂在小于或等于250的温度下接触 氢化HMF的方法包括提供含有HMF和果糖的水溶液。 H2和氢化催化剂。 在30℃或更高的温度下,HMF相对于果糖选择性地氢化。制备四氢呋喃二甲醇(THFDM)的方法包括提供具有第一和第二催化剂的连续流动反应器,并向反应器提供包含HMF的进料。 进料与第一催化剂接触以产生与第二催化剂接触以产生THFDM的呋喃二甲醇(FDM)。

    Catalysts and process for hydrogenolysis of sugar alcohols to polyols
    10.
    发明授权
    Catalysts and process for hydrogenolysis of sugar alcohols to polyols 有权
    用于将醇醇氢解成多元醇的催化剂和方法

    公开(公告)号:US06291725B1

    公开(公告)日:2001-09-18

    申请号:US09518860

    申请日:2000-03-03

    IPC分类号: C07C3118

    摘要: The present invention provides a process for preparation of low molecular weight polyols from high molecular weight polyols in a hydrogenolysis reaction under elevated temperature and hydrogen pressure. The process comprises providing in a reaction mixture the polyols, a base, and a metal catalyst prepared by depositing a transition metal salt on an inert support, reducing the metal salt to the metal with hydrogen, and passivating the metal with oxygen, and wherein the catalyst is reduced with hydrogen prior to the reaction. In particular, the process provides for the preparation of glycerol, propylene glycol, and ethylene glycol from sugar alcohols such as sorbitol or xylitol. In a preferred process, the metal catalyst comprises ruthenium which is deposited on an alumina, titania, or carbon support, and the dispersion of the ruthenium on the support increases during the hydrogenolysis reaction.

    摘要翻译: 本发明提供了在升高的温度和氢气压力下在氢解反应中由高分子量多元醇制备低分子量多元醇的方法。 该方法包括在反应混合物中提供多元醇,碱和通过在惰性载体上沉积过渡金属盐制备的金属催化剂,用氢将金属盐还原成金属,并用氧钝化金属,其中 催化剂在反应之前用氢还原。 特别地,该方法提供从糖醇如山梨糖醇或木糖醇制备甘油,丙二醇和乙二醇。 在优选的方法中,金属催化剂包含沉积在氧化铝,二氧化钛或碳载体上的钌,并且在氢解反应期间钌在载体上的分散体增加。