A two-phase system for the clean and high yield synthesis of furylmethane derivatives over –SO<sub>3</sub>H functionalized ionic liquids
作者:S. H. Shinde、C. V. Rode
DOI:10.1039/c7gc01654a
日期:——
respective ionic liquids. Among the several preapered ionic liquids, strong acidic imidazolium based butylsulfonic acid (6) showed the best activity with a maximum of 84% yield of condensation product. This strategy offers significantly highyield production of condensation products of furan and furfural as compared to the traditional mineral acid route. The activity and stability of the -SO3H functionalized
Hydrodeoxygenation of Furylmethane Oxygenates to Jet and Diesel Range Fuels: Probing the Reaction Network with Supported Palladium Catalyst and Hafnium Triflate Promoter
作者:Saikat Dutta、Basudeb Saha
DOI:10.1021/acscatal.7b00986
日期:2017.8.4
Catalytichydrodeoxygenation of furylmethane oxygenates to highcarbon branched chain jet and diesel fuel rangealkanes under mild reaction conditions is a promising strategy for energy-efficient production of fuels with minimal C–C cracking to undesired products. Here, we report that a strong Lewis acidic promoter can overcome the energy barrier for furylmethanehydrodeoxygenation at lower temperature
在温和的反应条件下,将呋喃甲烷含氧化合物催化加氢脱氧成高碳支链喷气发动机和柴油燃料系列烷烃是一种有前景的策略,可实现高能效生产,并且对不希望有的产品进行最低程度的C-C裂解。在这里,我们报告说,强路易斯酸性助催化剂可以克服呋喃甲烷加氢脱氧在较低温度下的能垒。呋喃甲烷的呋喃环首先通过加氢催化剂加氢成完全饱和的环醚,然后使其容易地开环并通过促进剂进行脱氧。在开环步骤中,在助催化剂的三氟甲磺酸酯配体的协助下,在醚基O和路易斯酸性金属中心之间形成了一个环状中间体。用对称的单个呋喃环替代分子探测反应路径表明,启动子对于开环是必需的。单个呋喃环代用品比多个呋喃环呋喃基甲烷更快地发生开环含氧化合物的脱氧。最高97%的喷气燃料范围烷烃在C中的选择性为93%在最佳条件下由C 15-呋喃甲烷获得15 H 32和C 14 H 30。具有所需碳原子数的烷烃的收率和选择性可以使用具有定制碳链,呋喃原子数和最小化C-C裂解的碳中心的呋喃甲烷进行调整。
Synthesis of phenols from hydroxymethylfurfural (HMF)
作者:Svetlana Tšupova、Frank Rominger、Matthias Rudolph、A. Stephen K. Hashmi
DOI:10.1039/c6gc01622g
日期:——
This study describes the use of hydroxymethylfurfural (HMF) as a precursor to phenols that are accessible within a few simple catalytic steps. A key step is an efficient transformation of...
Solventless C–C Coupling of Low Carbon Furanics to High Carbon Fuel Precursors Using an Improved Graphene Oxide Carbocatalyst
作者:Saikat Dutta、Ashish Bohre、Weiqing Zheng、Glen R. Jenness、Marcel Núñez、Basudeb Saha、Dionisios G. Vlachos
DOI:10.1021/acscatal.6b03113
日期:2017.6.2
alternative to precious-metal catalysts for many reactions. Herein, we report that graphene oxide becomes superactive for C–C coupling upon incorporation of a highly oxidized surface associated with Brønstedacidic oxygen functionality and defect sites along the surface and edges. The resulting improved graphene oxide (IGO) demonstrates significantly higher activity over commonly used framework zeolites for
MOF-catalyzed hydroxyalkylation-alkylation reaction for the controlled synthesis of furan oligomers
作者:Eduardo C. Atayde、Babasaheb M. Matsagar、Yu-Cheng Wang、Kevin C.-W. Wu
DOI:10.1016/j.apcata.2023.119492
日期:2024.1
Hydroxyalkylation-alkylation (HAA) reaction is a type of C-C coupling technique utilized in the production of furan oligomers, which are potential biofuel precursors. In this study, we present the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of a series of furan oligomers with high yield and selectivity. Specifically, we focused on the optimization of the HAA
羟烷基化-烷基化 (HAA) 反应是一种 CC 偶联技术,用于生产呋喃低聚物,呋喃低聚物是潜在的生物燃料前体。在这项研究中,我们首次将酸性 MOF(硫酸化 MOF-808)应用于催化一系列呋喃低聚物的 HAA 反应,并具有高产率和选择性。具体来说,我们通过改变不同的反应条件,重点优化了5-甲基糠醛(5-MFUR)和2-甲基呋喃(2-MF)之间的HAA,其定量收率达到97%,同时防止了2的自缩合。 -MF。该催化剂还被发现是可回收的,并且可以重复使用而不会显着损失其活性。最后,我们扩展了底物范围,将苯基亲电子试剂纳入其中,从而进一步证明了硫酸化MOF-808催化剂在多种起始材料的HAA反应中的多功能性。