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    • 23. 发明申请
    • PREPARATION OF AMINOMETHYL FURANS AND ALKOXYMETHYL FURAN DERIVATIVES FROM CARBOHYDRATES
    • 羧甲基纤维素制备氨基甲酰胺和烷氧基甲苯衍生物
    • WO2012082665A1
    • 2012-06-21
    • PCT/US2011/064513
    • 2011-12-13
    • ARCHER DANIELS MIDLAND COMPANYHOWARD, Stephen J.SANBORN, Alexandra J.
    • HOWARD, Stephen J.SANBORN, Alexandra J.
    • C07D307/02
    • C07D307/12C07D307/14C07D307/42C07D307/44C07D307/52
    • Described herein are single step methods of making various classes of alkylamine derivatives of furan and tetrahydrofuran by simultaneous contact of a sugar with H 2 , an acid catalyst and hydrogenation catalyst in the presence of an alkylamide solvent. The hydrogenation catalyst is a heterogeneous catalyst comprising a metal selected from the group consisting of Pt, Pd, and nickel. The acid catalysts may be homogeneous mineral acid or a heterogeneous acid catalyst on substrate. In a preferred practice the two catalysts are provided on a common heterogeneous bifunctional support. Using similar combinations of acid and hydrogenation catalysts, there is also described single step methods for making furandimethanol by simultaneously contacting a hexose with the two separate catalysts in the presence of H 2 in an aprotic solvent, such as dimethylformamide. With the same catalyst system and similar reaction conditions, 2, 5 furan dialkylethers can also be made in a single step when the solvent includes an ROH alcohol.
    • 本文描述了通过在烷基酰胺溶剂存在下,通过糖与H 2,酸催化剂和氢化催化剂的同时接触来制备呋喃和四氢呋喃的各种类型的烷基胺衍生物的单步方法。 氢化催化剂是包含选自Pt,Pd和镍的金属的多相催化剂。 酸催化剂可以是均匀的无机酸或基质上的多相酸催化剂。 在优选的实践中,两种催化剂提供在共同的异质双功能载体上。 使用酸和氢化催化剂的类似组合,还描述了通过在非质子溶剂如二甲基甲酰胺中在H 2存在下同时使己糖与两种分离的催化剂接触来制备呋喃二甲醇的单步方法。 在相同的催化剂体系和类似的反应条件下,当溶剂包括ROH醇时,也可以在一个步骤中制备2,5-呋喃二烷基醚。