WO2023077822A1 - 一种利用5-氯甲基糠醛制备2,5-呋喃二甲醇的方法 - Google Patents

一种利用5-氯甲基糠醛制备2,5-呋喃二甲醇的方法 Download PDF

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WO2023077822A1
WO2023077822A1 PCT/CN2022/099830 CN2022099830W WO2023077822A1 WO 2023077822 A1 WO2023077822 A1 WO 2023077822A1 CN 2022099830 W CN2022099830 W CN 2022099830W WO 2023077822 A1 WO2023077822 A1 WO 2023077822A1
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chloromethylfurfural
preparation
catalyst
ratio
mass
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曾宪海
陈炳霖
陈高峰
田野
李铮
杨述良
唐兴
孙勇
林鹿
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厦门大学
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/38Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D307/40Radicals substituted by oxygen atoms
    • C07D307/42Singly bound oxygen atoms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8913Cobalt and noble metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8926Copper and noble metals
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/584Recycling of catalysts

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  • the invention belongs to the field of organic synthesis, and in particular relates to a method for preparing 2,5-furandimethanol by utilizing 5-chloromethylfurfural.
  • BHMF 2,5-Bishhydroxymethylfuran
  • the main raw material for the synthesis of BHMF is the biomass-based platform molecule 5-Hydroxymethylfurfural (5-Hydroxymethylfurfural, HMF) (ACS Sustainable Chemistry & Engineering, 2021, 9(3): 1161-71; Applied Catalysis A: General, 2021, 609 : 117892; Applied Catalysis B: Environmental, 2020, 277, 119273; ACS Sustainable Chemistry & Engineering, 2019, 7(12), 10670-8; Applied Catalysis a-General, 2019, 578, 122-33; Green Chemistry, 201 9,21(16 ), 4319-23; Applied Catalysis B: Environmental, 2019, 241, 270-83; Green Chemistry, 2018, 20(5), 1095-105.).
  • 5-Hydroxymethylfurfural 5-Hydroxymethylfurfural, HMF
  • the raw materials for preparing HMF are mainly fructose with high cost. If the raw materials such as cheap cellulose and biomass are used to directly prepare HMF, there are problems such as low yield and poor selectivity. In addition, the separation and purification of HMF is difficult due to its instability and hydrophilicity, which further limits the process of large-scale preparation of BHMF using HMF as a raw material.
  • 5-Chloromethylfurfural (5-Chloromethylfurfural, CMF) can be directly prepared from raw materials such as fiber and biomass with high yield under mild conditions, and CMF is more convenient for separation and purification due to its stability and non-hydrophilicity. Therefore, CMF is considered to be a new type of biomass-based platform molecule that can replace HMF (ACS Sustainable Chemistry & Engineering, 2019, 7(6), 5588-601; Angew Chem, Int Ed, 2008, 47(41), 7924-6.), However, there is a lack of relevant reports on the direct one-step conversion of CMF to BHMF with high selectivity.
  • the high-selectivity direct preparation of BHMF from the new biomass-based platform molecule CMF instead of HMF can not only greatly reduce the production cost, but also has a good industrialization prospect.
  • the purpose of the present invention is to overcome the defects of the prior art and provide a method for directly preparing 2,5-furandimethanol from 5-chloromethylfurfural derived from biomass, with mild reaction conditions and high yield.
  • the invention provides a method for preparing 2,5-furandimethanol by using 5-chloromethylfurfural, which is characterized in that it comprises the following steps: mixing 5-chloromethylfurfural, a catalyst, an alkali neutralizer, sodium dithionite and Ionized water is added to a closed stainless steel reactor, filled with H 2 , and reacted under stirring at a speed of 400-800rpm.
  • the reaction equation is shown in Figure 1;
  • the catalyst is prepared by the following method: disperse metal oxide in RuCl 3 ⁇ 3H 2 O solution and stir, then add NaBH 4 solution dropwise and stir, and finally centrifuge, wash with deionized water and freeze-dry to obtain the catalyst.
  • the ratio of the 5-chloromethylfurfural (g) to water (mL) is 1:50-250, preferably 1:50-100; the mass of the 5-chloromethylfurfural
  • the ratio of (g) and catalyst quality (g) is 1:0.5-1.5, and described is preferably 1:1;
  • the ratio of described 5-chloromethylfurfural quality (g) and sodium dithionite quality (g) is 1 :0.05-0.2, preferably 1:0.1; described 5-chloromethylfurfural molar weight (mol) and alkali neutralizing agent molar weight (mol) ratio is 1:0.5-0.9; Preferably 1:0.7; Described
  • the initial hydrogen pressure is 2-5MPa; preferably 4MPa; the reaction temperature is 40-80°C, preferably 60-70°C; the reaction time is 0.5-8h, preferably 2-5h.
  • the alkali neutralizing agent is calcium carbonate, potassium bicarbonate and sodium bicarbonate, preferably calcium carbonate.
  • the metal oxide, RuCl 3 ⁇ 3H 2 O and NaBH 4 are used in a mass (g) ratio of 1:0.05-0.2:0.05-2.
  • the raw material 5-chloromethylfurfural used in the present invention can be directly prepared from cellulose or biomass raw materials with high yield, and is convenient for separation and purification, which greatly reduces the production cost of raw materials.
  • the catalytic reaction system used in the present invention can realize the high-efficiency conversion of raw material 5-chloromethylfurfural into 2,5-furandimethanol under relatively mild conditions, and the catalyst used is easy to prepare, and the alkali neutralizer and additive sodium dithionite Cheap and easy to get.
  • Figure 1 is the reaction pathway for the preparation of 2,5-furandimethanol from 5-chloromethylfurfural.
  • Fig. 2 is the HPLC spectrum of 2,5-furandimethanol obtained in Embodiment 16 of the present invention.
  • Fig. 3 is the spectrum of 2,5-furandimethanol gas-phase mass spectrometry obtained in Embodiment 16 of the present invention.
  • the corresponding catalyst was prepared according to the method of Example 1, except that the catalyst carrier was Co 3 O 4 , and the catalyst Ru/Co 3 O 4 was obtained.
  • the Ru loading was 5 wt.% Ru relative to the support Co 3 O 4 .
  • Example 1 1) According to the method of Example 1, the corresponding catalyst was prepared for use. The difference was that the masses of RuCl 3 3H 2 O were weighed to be 0.0205g (1wt.%), 0.0616g (3wt.%), 0.144g (7wt.%) respectively. .%), 0.185g (9wt.%). The loading amounts of Ru were 1 wt.% Ru, 3 wt.% Ru, 7 wt.% Ru, 9 wt.% Ru relative to the support CuO, respectively.
  • alkali neutralizing agent is respectively NaHCO 3 and KHCO 3
  • its result is respectively: the molar yield of 2,5-furandimethanol 56% and 47%.
  • catalyst (Ru/CuO, 5wt.%Ru relative to carrier CuO) provided by the invention and alkali neutralizer (especially CaCO ) can be effectively used for 5-chloromethylfurfural hydrogenation Preparation of high value-added fine chemical 2,5-furandimethanol.
  • alkali neutralizer especially CaCO
  • the molar yield of 2,5-furandimethanol is 91% under the optimal reaction conditions, that is, the reaction temperature is 60°C, the reaction time is 4h, and the hydrogen pressure is 4MPa.

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  • Engineering & Computer Science (AREA)
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  • Furan Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

本发明公开了一种利用5-氯甲基糠醛制备2,5-呋喃二甲醇的方法,5-氯甲基糠醛在催化剂、连二亚硫酸钠、碱中和剂、去离子水和H 2的作用下,经一步反应可得到2,5-呋喃二甲醇。在本发明中所用5-氯甲基糠醛可直接由生物质原料高产率制备而得,产物选择性高且反应条件温和,因此提供了一条利用可再生资源制备2,5-呋喃二甲醇的可持续发展路径。

Description

一种利用5-氯甲基糠醛制备2,5-呋喃二甲醇的方法 技术领域
本发明属于有机合成领域,具体涉及一种利用5-氯甲基糠醛制备2,5-呋喃二甲醇的方法。
背景技术
2,5-呋喃二甲醇(2,5-Bishydroxymethylfuran,BHMF)作为一种高附加值的二醇,在精细化学品合成、新型功能化聚醚、聚氨酯及药物的多杂环合物的制备研究中都有重要应用。目前合成BHMF的主要原料为生物质基平台分子5-羟甲基糠醛(5-Hydroxymethylfurfural,HMF)(ACS Sustainable Chemistry&Engineering,2021,9(3):1161-71;Applied Catalysis A:General,2021,609:117892;Applied Catalysis B:Environmental,2020,277,119273;ACS Sustainable Chemistry&Engineering,2019,7(12),10670-8;Applied Catalysis a-General,2019,578,122-33;Green Chemistry,2019,21(16),4319-23;Applied Catalysis B:Environmental,2019,241,270-83;Green Chemistry,2018,20(5),1095-105.)。然而目前制备HMF的原料主要为成本较高的果糖等,若以廉价的纤维素和生物质等为原料直接制备HMF存在产率低和选择性差等难题。此外,HMF因不稳定性和亲水性等导致了其分离提纯难度大,进一步限制了以HMF为原料规模化制备BHMF的进程。
5-氯甲基糠醛(5-Chloromethylfurfural,CMF)在温和条件下可以直接从纤维和和生物质等原料高产率制备,且CMF因稳定性和非亲水性等特点使其更便于分离提纯,因此CMF被认为是可以替代HMF的新型生物质基平台分子(ACS Sustainable Chemistry&Engineering,2019,7(6),5588-601;Angew Chem,Int Ed,2008,47(41),7924-6.),但是缺少将CMF直接一步高选择性转化为BHMF的相关报道。
综上,以新型生物质基平台分子CMF替代HMF为原料高选择性直接制备BHMF不仅可以大大降低生产成本,也具有较好的工业化前景。
发明内容
本发明的目的在于克服现有技术缺陷,提供一种由生物质衍生的5-氯甲基糠醛直接制备2,5-呋喃二甲醇的方法,反应条件温和,产率高。
本发明所要解决的技术问题采用以下技术方案来实现:
本发明提供一种利用5-氯甲基糠醛制备2,5-呋喃二甲醇的方法,其特征在于包括如下步骤:将5-氯甲基糠醛、催化剂、碱中和剂、连二亚硫酸钠和去离子水加入不锈钢密闭反应器中,充入H 2,400-800rpm的速度搅拌下进行反应,反应方程式如附图1所示;
所述催化剂由下述方法制备得到:将金属氧化物分散于RuCl 3·3H 2O溶液中搅拌,接着滴加NaBH 4溶液并搅拌,最后经离心、去离子水洗涤和冷冻干燥,得到催化剂。
在一个具体的实施方式中,所述5-氯甲基糠醛(g)和水(mL)的比例为1:50-250,优选为1:50-100;所述5-氯甲基糠醛质量(g)和催化剂质量(g)的比例为1:0.5-1.5,所述优选为1:1;所述5-氯甲基糠醛质量(g)和连二亚硫酸钠质量(g)的比例为1:0.05-0.2,优选为1:0.1;所述5-氯甲基糠醛摩尔量(mol)和碱中和剂摩尔量(mol)比例为1:0.5-0.9;优选为1:0.7;所述氢气初始压力为2-5MPa;优选为4MPa;所述反应温度为40-80℃,优选为60-70℃;所述反应时间为0.5-8h,优选为2-5h.
在一个具体的实施方式中,所述碱中和剂为碳酸钙,碳酸氢钾和碳酸氢钠,优选为碳酸钙。
在一个具体的实施方式中,所述催化剂制备步骤中,金属氧化物,RuCl 3·3H 2O和NaBH 4所用质量(g)比例为1:0.05-0.2:0.05-2。
本发明的有益效果是:
1.本发明所用的原料5-氯甲基糠醛可以直接从纤维素或生物质原料高产率制备,且便于分离提纯,大大降低了原料生产成本,因此本发明提供的是一条利用可再生资源制备2,5-呋喃二甲醇的可持续发展路径。
2.本发明所用的催化反应体系,在较温和条件下可以实现原料5-氯甲基糠醛高效转化为2,5-呋喃二甲醇,且所用催化剂易于制备,碱中和剂和添加剂连二亚硫酸钠廉价易得。
附图说明
图1为5-氯甲基糠醛制备2,5-呋喃二甲醇反应路径。
图2为本发明实施16所制得的2,5-呋喃二甲醇高效液相色谱图谱。
图3为本发明实施16所制得的2,5-呋喃二甲醇气相质谱联用仪图谱。
具体实施方式
结合实施实例,进一步阐述本项发明。除非特别说明,以下实施例中使用的试剂和仪器均为市售可得产品。具体实施案例如下:
实施例1
1)称取0.103g RuCl 3·3H 2O溶于30mL去离子水中,然后称取1g CuO加入该水溶液中,并搅拌2h。接着滴加NaBH 4溶液(0.3g NaBH 4溶于20mL去离子水中)并搅拌1h。经离心、洗涤(去离子水,30mL×3)和冷冻干燥,得催化剂Ru/CuO。Ru的负载量为5wt.%Ru相对于载体CuO
2)将5-氯甲基糠醛(0.1g)、催化剂Ru/CuO(0.1g,5wt.%Ru相对于载体CuO)、碳酸钙(0.05 g)、连二亚硫酸钠(0.01g)和10mL去离子水加入不锈钢密闭反应器中,充入4MPa H 2,于500rpm搅拌速度下加热至70℃进行反应2h。反应结束后,用离心机进行固液分离(8000r/min,5min),采用高效液相色谱仪(HPLC,Agilent 1260)进行定量分析。使用气相质谱(GCMS,Thermo Scientific)进行定性分析。其结果为:2,5-呋喃二甲醇的摩尔产率为76%。
实施例2
1)按实施例1的方法制备得到相应的催化剂备用,不同的是,催化剂载体为Co 3O 4,得到催化剂Ru/Co 3O 4。Ru的负载量为5wt.%Ru相对于载体Co 3O 4
2)采用上述制备催化剂Ru/Co 3O 4,按实施例1的方法进行反应,其结果为:2,5-呋喃二甲醇的摩尔产率为34%。
实施例3-6
1)按实施例1的方法制备得到相应的催化剂备用,不同的是,称取RuCl 3·3H 2O质量分别为0.0205g(1wt.%),0.0616g(3wt.%),0.144g(7wt.%),0.185g(9wt.%)。Ru的负载量分别为1wt.%Ru、3wt.%Ru、7wt.%Ru、9wt.%Ru相对于载体CuO。
2)采用上述制备四种催化剂,按实施例1的方法进行反应。其结果分别为:2,5-呋喃二甲醇的摩尔产率为13%、39%、74%和55%。
实施例7-8
采用上述实施例1制备的催化剂,按实施例1的方法进行反应,不同的是,碱中和剂分别为NaHCO 3和KHCO 3,其结果分别为:2,5-呋喃二甲醇的摩尔产率为56%和47%。
实施例9-13
采用上述实施例1制备的催化剂,按实施例1的方法进行反应,不同的是,反应时间分别为1h、3h、4h、5h和6h,其结果分别为:2,5-呋喃二甲醇的摩尔产率为51%、78%、81%、76%和75%。
实施例14-16
采用上述实施例1制备的催化剂,按实施例1的方法进行反应,不同的是,分别在反应温度40℃、50℃和60℃下反应4h,其结果分别为:2,5-呋喃二甲醇的摩尔产率为28%、73%和91%。
实施例17-19
采用上述实施例1制备的催化剂,按实施例1的方法进行反应,不同的是,分别在不同氢气压力2MPa、3MPa和5MPa下,60℃反应4h,其结果分别为:2,5-呋喃二甲醇的摩尔产率为39%、58%和84%。
总结上述结果如下表:
表1不同类型催化剂及过程变量对5-氯甲基糠醛加氢产率的影响
Figure PCTCN2022099830-appb-000001
根据以上具体实施例的结果表明,本发明提供的催化剂(Ru/CuO,5wt.%Ru相对于载体CuO)和碱中和剂(尤其是CaCO3)可以有效用于5-氯甲基糠醛加氢制备高附加值精细化学品2,5-呋喃二甲醇。在最佳反应条件即反应温度60℃、反应时间4h、氢气压力4MPa时,2,5-呋喃二甲醇的摩尔产率为91%
本发明的具体实施例仅仅是出于示例性说明的目的,其不以任何方式限定本发明的保护范围,本领域的技术人员可以根据上述说明加以更改或变换,而这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (9)

  1. 一种利用5-氯甲基糠醛制备2,5-呋喃二甲醇的方法,其特征在于包括如下步骤:将5-氯甲基糠醛、催化剂、碱中和剂、连二亚硫酸钠和去离子水加入不锈钢密闭反应器中,充入H 2,400-800rpm的速度搅拌下进行反应;
    所述催化剂为钌基金属氧化物,优选为Ru/CuO和Ru/Co 3O 4,更优选为Ru/CuO。
  2. 如权利要求1所述的制备方法,其特征在于:所述催化剂由下述方法制备得到:将金属氧化物分散于RuCl 3·3H 2O溶液中搅拌,接着滴加NaBH 4溶液并搅拌,最后经离心、去离子水洗涤和冷冻干燥,得到催化剂。所述金属氧化物是Cu或Co的氧化物,更具体的是CuO和Co 3O 4
  3. 如权利要求2所述的制备方法,其特征在于:所述催化剂的制备步骤中,金属氧化物,RuCl 3·3H 2O和NaBH 4所用质量比例为1:0.05-0.2:0.05-2。
  4. 如权利要求1所述的制备方法,其特征在于:所述5-氯甲基糠醛(g)和水(mL)的比例为1:50-250,优选为1:50-100。
  5. 如权利要求1所述的制备方法,其特征在于:所述5-氯甲基糠醛质量(g)和催化剂质量(g)的比例为1:0.5-1.5,所述优选为1:1。
  6. 如权利要求1所述的制备方法,其特征在于:所述5-氯甲基糠醛质量(g)和连二亚硫酸钠质量(g)的比例为1:0.05-0.2,优选为1:0.1。
  7. 如权利要求1所述的制备方法,其特征在于:所述5-氯甲基糠醛摩尔量(mol)和碱中和剂摩尔量(mol)比例为1:0.5-0.9;优选为1:0.7。
  8. 如权利要求1所述的制备方法,其特征在于:氢气初始压力为2-5MPa;反应温度为40-80℃,优选为60-70℃;反应时间为0.5-8h,优选为2-5h。
  9. 如权利要求1所述的制备方法,其特征在于:所述碱中和剂为碳酸钙,碳酸氢钾和碳酸氢钠,优选为碳酸钙。
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CN114573527B (zh) * 2022-03-11 2023-08-01 湖南师范大学 一种5-羟甲基糠醛转移加氢制备2,5-二羟甲基呋喃的方法

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