Superelectrophilic Activation of 5-hydroxymethylfurfural and 2,5-diformylfuran: Organic Synthesis Based on Biomass-derived Products
Overview
Authors
Affiliations
The reaction of 5-hydroxymethylfurfural (5-HMF) with arenes in superacidic trifluoromethanesulfonic acid (triflic acid, TfOH) as the solvent at room temperature for 1-24 h gives rise to 5-arylmethylfurfurals (yields of 17-91%) and 2-arylmethyl-5-(diarylmethyl)furans (yields of 10-37%). The formation of these two types of reaction products depends on the nucleophilicity of the arene. The same reactions under the action of acidic zeolites H-USY in high pressure tubes at 130 °C for 1 h result in the formation of only 5-arylmethylfurfurals (yields of 45-79%). 2,5-Diformylfuran (2,5-DFF) in the reaction with arenes under the action of AlBr at room temperature for 1 h leads to 5-(diarylmethyl)furfurals (yields of 51-90%). The reactive protonated species of 5-HMF and 2,5-DFF were characterized by NMR spectroscopy in TfOH and studied by DFT calculations. These reactions show possibilities of organic synthesis based on biomass-derived 5-HMF and 2,5-DFF.
Yadav A, Bhat N, Kaushik S, Seikh A, Dutta S RSC Adv. 2024; 14(5):3096-3103.
PMID: 38239440 PMC: 10795607. DOI: 10.1039/d3ra08505h.
Kalyaev M, Ryabukhin D, Borisova M, Ivanov A, Boyarskaya I, Borovkova K Molecules. 2022; 27(14).
PMID: 35889484 PMC: 9325161. DOI: 10.3390/molecules27144612.
Galkin K, Ananikov V ChemistryOpen. 2020; 9(11):1135-1148.
PMID: 33204585 PMC: 7646257. DOI: 10.1002/open.202000233.
Ryabukhin D, Turdakov A, Soldatova N, Kompanets M, Ivanov A, Boyarskaya I Beilstein J Org Chem. 2019; 15:1962-1973.
PMID: 31501662 PMC: 6720581. DOI: 10.3762/bjoc.15.191.
Expanding the biomass derived chemical space.
Brun N, Hesemann P, Esposito D Chem Sci. 2017; 8(7):4724-4738.
PMID: 28959397 PMC: 5603961. DOI: 10.1039/c7sc00936d.