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    • 3. 发明申请
    • Production of 5-Membered and 6-Membered Cyclic Esters of Polyols
    • 5元和6元环多元醇的生产
    • US20130296584A1
    • 2013-11-07
    • US13894724
    • 2013-05-15
    • Stephen HowardAlexandra Sanborn
    • Stephen HowardAlexandra Sanborn
    • C07D493/04
    • C07D493/04C07D493/22Y02P20/582
    • Described herein are improved methods for the preparation of 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols by reaction with an organic acid RCOOH over a solid acidic substrate. The process is adaptable to a continuous process for simultaneously making and separating the cyclic esters from the sugar alcohols and anhydrosugar alcohols under mild conditions using the solid acid substrate as both the catalyst and a chromatographic bed for separation. The reactions are performed at mild temperatures of 70° C. to 100° C. and the formation of the cyclic esters is nearly quantitative. Also described is a method for making 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols using microwave irradiation in the presence of the organic acid.
    • 本文描述了通过在固体酸性底物上与有机酸RCOOH反应来制备糖醇和脱水糖醇的5-和6-元环状单酯和二酯的改进方法。 该方法适用于在温和条件下使用固体酸底物作为催化剂和用于分离的色谱床同时制备和分离环状酯与糖醇和脱水葡萄糖醇的连续方法。 反应在70℃至100℃的温和温度下进行,环酯的形成几乎是定量的。 还描述了在有机酸存在下使用微波辐射制备糖醇和脱水糖醇的5-和6-元环状单酯和二酯的方法。
    • 8. 发明授权
    • Oxidation of furfural compounds
    • 糠醛化合物的氧化
    • US08558018B2
    • 2013-10-15
    • US13319877
    • 2010-05-14
    • Alexandra Sanborn
    • Alexandra Sanborn
    • C07D307/48
    • C07D307/68
    • The disclosure pertains to a process for oxidation of furan aldehydes such as 5-hydroxymethyl)furfural (HMF) and derivatives thereof such as 5-(alkoxymethyl)furfural (AMF), 5-(aryloxymethyl)furfural, 5-(cycloalkoxy-methyl)furfural and 5-(alkoxycarbonyl)furfural compounds in the presence of dissolved oxygen and a Co(II), Mn(II), Ce(III) salt catalyst or mixtures thereof. The products from HMF can be selectively chosen to be predominantly 2,5-diformylfuran (DFF), particularly by inclusion of an aliphatic ketone, like methyl ethyl ketone, or can be further oxidized to 2,5-furandicarboxylic acid (FDCA) by the omission of methyl ethyl ketone and inclusion of bromide. When the reactant is an ether derivative of HMF the products are surprisingly ester derivatives where either both the ether and aldehyde functional groups have been oxidized or just the ether function group thereby producing one or both of 5-ester-furan-2-acids (i.e., 5-alkoxycarbonylfurancarboxylic acids) or 5-ester-furan aldehydes, (i.e., -alkoxycarbonylfurfurals a. k. a, 5-(alkoxycarbonyl)furfural). (I).
    • 本发明涉及呋喃醛如5-羟甲基糠醛(HMF)及其衍生物如5-(烷氧基甲基)糠醛(AMF),5-(芳氧基甲基)糠醛,5-(环烷氧基甲基) 糠醛和5-(烷氧基羰基)糠醛化合物在溶解氧和Co(II),Mn(II),Ce(III)盐催化剂或其混合物存在下进行。 来自HMF的产物可以选择性地主要选择为2,5-二甲基呋喃(DFF),特别是通过包含脂族酮如甲基乙基酮,或者可以通过以下方法进一步氧化成2,5-呋喃二羧酸(FDCA) 省略甲基乙基酮并加入溴化物。 当反应物是HMF的醚衍生物时,产物令人吃惊地是酯衍生物,其中醚和醛官能团都被氧化,或仅仅是醚官能团,从而产生5-酯 - 呋喃-2-酸之一或两者(即 ,5-烷氧基羰基呋喃羧酸)或5-酯 - 呋喃醛(即 - 烷氧羰基糠醛ak a,5-(烷氧基羰基)糠醛)。 (一世)。
    • 9. 发明申请
    • PRODUCTION OF 5-MEMBERED AND 6-MEMBERED CYCLIC ESTERS OF POLYOLS
    • 制备多组分5份和6份环状酯
    • US20110071305A1
    • 2011-03-24
    • US12993143
    • 2009-05-28
    • Stephen HowardAlexandra Sanborn
    • Stephen HowardAlexandra Sanborn
    • C07D493/04
    • C07D493/04C07D493/22Y02P20/582
    • Described herein are improved methods for the preparation of 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols by reaction with an organic acid RCOOH over a solid acidic substrate. The process is adaptable to a continuous process for simultaneously making and separating the cyclic esters from the sugar alcohols and anhydrosugar alcohols under mild conditions using the solid acid substrate as both the catalyst and a chromatographic bed for separation. The reactions are performed at mild temperatures of 700 C to 1000 C and the formation of the cyclic esters is nearly quantitative. Also described is a method for making 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols using microwave irradiation in the presence of the organic acid.
    • 本文描述了通过在固体酸性底物上与有机酸RCOOH反应来制备糖醇和脱水糖醇的5-和6-元环状单酯和二酯的改进方法。 该方法适用于在温和条件下使用固体酸底物作为催化剂和用于分离的色谱床同时制备和分离环状酯与糖醇和脱水糖醇的连续方法。 反应在700℃至1000℃的温和温度下进行,环酯的形成几乎是定量的。 还描述了在有机酸存在下使用微波辐射制备糖醇和脱水糖醇的5-和6-元环状单酯和二酯的方法。