1487-18-9Relevant articles and documents
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Fuqua,S.A. et al.
, p. 1027 - 1029 (1965)
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Efficient procedure for the preparation of 2-bromo-5-ethylfuran and its unexpected isomerization
Pal'chikov,Robertson
, (2014)
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On the valence shell electronic spectroscopy of 2-vinyl furan
Giuliani,Walker,Delwiche,Hoffmann,Kech,Limao-Vieira,Mason,Hubin-Franskin
, p. 10972 - 10982 (2004)
The vacuum ultraviolet (VUV) absorption spectra of 2-vinyl furan was investigated. The spectroscopic properties of the 2-vinyl furan was analyzed using electron energy loss spectroscopy and synchrotron radiation source with absolute cross section determinations. The semiempirical molecular orbital calculations was used for the interpretation of the HeI photoelectron spectrum. A photoabsorption spectrum was observed in the first band in the UV absorption spectra in solution of furans in position 2 of polyenyl groups of increasing size.
Method for synthesizing biomass-based functional monomer based on furfuryl alcohol/methanol catalytic conversion and catalyst application
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Paragraph 0121-0144, (2021/04/17)
The invention provides an application of a solid catalyst in synthesis of a furylethylene functional monomer and a method for synthesizing a biomass-based functional monomer based on furfuryl alcohol/methanol catalytic conversion. The invention provides the application of the solid catalyst in the synthesis of the furylethylene functional monomer for the first time. Cheap and easily available bulk chemical furfuryl alcohol and derivatives thereof and methanol are used as raw materials, and the biomass-based functional monomer is synthesized on solid catalysts such as a molecular sieve and a modified molecular sieve catalyst by a gas-phase one-step method. The functional monomer has the characteristics that a furan group and a carbon-carbon double bond are contained in the structure, the synthesis method has the characteristics of a methanol-to-olefin industrial technology, the operation is simple, the flow is short, harsh experimental conditions are not needed, the cost of raw materials and a catalyst is low, the preparation is easy, and the defects of a conventional synthesis strategy based on a Witting reaction are broken through. The invention provides a green and sustainable new strategy for synthesizing the furylethylene functional monomer, and the method has a good industrial prospect.
N,N,O-Coordinated tricarbonylrhenium precatalysts for the aerobic deoxydehydration of diols and polyols
Klein Gebbink, Robertus J. M.,Li, Jing,Lutz, Martin
, p. 3782 - 3788 (2020/06/22)
Rhenium complexes are well known catalysts for the deoxydehydration (DODH) of vicinal diols (glycols). In this work, we report on the DODH of diols and biomass-derived polyols using L4Re(CO)3as precatalyst (L4Re(CO)3= tricarbonylrhenium 2,4-di-tert-butyl-6-(((2-(dimethylamino)ethyl)(methyl)amino)methyl)phenolate). The DODH reaction was optimized using 2 mol% of L4Re(CO)3as precatalyst and 3-octanol as both reductant and solvent under aerobic conditions, generating the active high-valent rhenium speciesin situ. Both diol and biomass-based polyol substrates could be applied in this system to form the corresponding olefins with moderate to high yield. Typical features of this aerobic DODH system include a low tendency for the isomerization of aliphatic external olefin products to internal olefins, a high butadiene selectivity in the DODH of erythritol, the preferential formation of 2-vinylfuran from sugar substrates, and an overall low precatalyst loading. Several of these features indicate the formation of an active species that is different from the species formed in DODH by rhenium-trioxo catalysts. Overall, the bench-top stable and synthetically easily accessible, low-valent NNO-rhenium complex L4Re(CO)3represents an interesting alternative to high-valent rhenium catalysts in DODH chemistry.