Described herein are single step methods of making various classes of alkylamine derivatives of furan and tetrahydrofuran by simultaneous contact of a sugar with H2, 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 H2 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.
本文描述了一种单步法制备各种类别的
呋喃和
四氢呋喃的烷基胺衍
生物的方法,即在存在烷基酰胺溶剂的情况下,将糖与H2、酸催化剂和加氢催化剂同时接触。加氢催化剂是一种杂质催化剂,包括从Pt、Pd和
镍中选择的
金属。酸催化剂可以是均相矿物酸或基质上的杂质酸催化剂。在首选实践中,两种催化剂被提供在共同的杂质双功能支撑上。使用类似的酸和加氢催化剂的组合,还描述了一种单步法制备
呋喃二
甲醇的方法,即在无
水溶剂(如二甲基甲酰胺)中,在存在H2的情况下,将己糖与两种分离的催化剂同时接触。在相同的催化剂系统和类似的反应条件下,当溶剂包括ROH醇时,也可以用单步法制备2、5-
呋喃双烷醚。