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.
A Systems Approach to a One-Pot Electrochemical Wittig Olefination Avoiding the Use of Chemical Reductant or Sacrificial Electrode
Chakraborty, Biswarup,Kostenko, Arseni,Menezes, Prashanth W.,Driess, Matthias
supporting information, p. 11829 - 11834 (2020/08/19)
An unprecedented one-pot fully electrochemically driven Wittig olefination reaction system without employing a chemical reductant or sacrificial electrode material to regenerate triphenylphosphine (TPP) from triphenylphosphine oxide (TPPO) and base-free in situ formation of Wittig ylides, is reported. Starting from TPPO, the initial step of the phosphoryl P=O bond activation proceeds through alkylation with RX (R=Me, Et; X=OSO2CF3 (OTf)), affording the corresponding [Ph3POR]+X? salts which undergo efficient electroreduction to TPP in the presence of a substoichiometric amount of the Sc(OTf)3 Lewis acid on a Ag-electrode. Subsequent alkylation of TPP affords Ph3PR+ which enables a facile and efficient electrochemical in situ formation of the corresponding Wittig ylide under base-free condition and their direct use for the olefination of various carbonyl compounds. The mechanism and, in particular, the intriguing role of Sc3+ as mediator in the TPPO electroreduction been uncovered by density functional theory calculations.
