Highly effective and chemoselective hydrodeoxygenation of aromatic alcohols

Abstract

Effective hydrodeoxygenation (HDO) of aromatic alcohols is very attractive in both conventional organic synthesis and upgrading of biomass-derived molecules, but the selectivity of this reaction is usually low because of...

Enhancing the catalytic performance of Co–N–C derived from ZIF-67 by mesoporous silica encapsulation for chemoselective hydrogenation of furfural

“…1,2 Biomass is one of the most abundant renewable energy sources and it can be transformed into biofuels and highly value-added chemicals through selective hydrogenation, oxidation, decarbonylation, and so on. [3][4][5][6][7] Furfural, as one of the major biomass-based platform molecules, can be converted into furfuryl alcohol, furan and other chemicals (Scheme 1). [8][9][10][11] Among them, furfuryl alcohol is an important intermediate in the chemical industry and is widely used in the production of thermostatic resins, synthetic fibers, adhesives, fine chemicals and other chemicals.…”

Hf4+-exchanged montmorillonite-boosted Pd-catalyzed reductive aminolysis of aryl ethers to efficiently synthesize cyclohexylamines

“…[5][6][7][8][9] In the past decades, great achievements have been made in the cleavage of C-O bonds in lignin to synthesize oxygenates, aromatics, or cyclohexanes. [10][11][12][13][14][15][16][17][18] With the rapid development of biorefineries, significant efforts are continually being devoted to upgrading lignin into nitrogen-containing compounds (especially amines with cyclohexyl groups) via editing the C-O bonds in lignin, which has become an emerging strategy to convert lignin.…”

Catalytic Conversion of Lignin into Valuable Chemicals: Full Utilization of Aromatic Nuclei and Side Chains

“…30 In addition to designing reaction pathways, the development of catalytic systems customized to target specific linkages or functional groups within the aromatic nuclei enables controlled transformations, resulting in the production of desired products. 31 The precise modulation of reaction conditions and catalyst engineering are pivotal in selectively cleaving C aryl −O/C aryl −C bonds, which thus enhances both yield and selectivity in these conversion processes. 14,32 The side chains are a significant component of lignin, including methoxyl groups, polyhydroxypropyl chains with substituent groups, and phenolic hydroxyls.…”

“…In recent years, significant progress has been made by researchers in transforming the aromatic nuclei. ,, To achieve the desired aromatic products or their derivatives, a range of depolymerization methods, including hydrolytic, aminolysis, reductive, , oxidative, , and photo- − and electrochemical approaches, , have been employed to selectively break the interunit ether connections . In addition to designing reaction pathways, the development of catalytic systems customized to target specific linkages or functional groups within the aromatic nuclei enables controlled transformations, resulting in the production of desired products . The precise modulation of reaction conditions and catalyst engineering are pivotal in selectively cleaving C aryl –O/C aryl –C bonds, which thus enhances both yield and selectivity in these conversion processes. , …”