13679-43-1Relevant articles and documents
Method for high-5-MFA efficiency synthesis of TiB from BMFM environment-friendly environment (by machine translation)
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Paragraph 0012; 0023-0043, (2019/11/21)
The invention relates to the technical field of biomass conversion, and in particular relates to a method 5 - for (5 - MFA) efficiently synthesizing) bis ((5 - pentamethyl furan-2-(BMFM) based) methane in non-catalytic participation in 5 - MFA a reaction vessel in the following steps: cooling the organic phase to room temperature after the reaction time is cooled to room temperature BMFM 81%. The method has the advantages that the reaction conditions are very mild, the technological operation is very simple, the product is very easy to separate, green and high-efficiency conversion of biomass resources is achieved in industrial production, and meanwhile environmental problems caused in the process are avoided. (by machine translation)
A two-phase system for the clean and high yield synthesis of furylmethane derivatives over -SO3H functionalized ionic liquids
Shinde,Rode
, p. 4804 - 4810 (2017/10/19)
A new and effective unique two-phase reaction system is investigated for the high yield production of tri(furyl)methane from furfural and furan. This strategy includes the use of an acidic aqueous phase (water + -SO3H functionalized IL) and furan phase, which significantly suppresses polymer formation, thereby increasing the yield of tri(furyl)methane. Furan serves as a reactant as well as an extraction solvent for the recovery of the condensation products. For comparison, different -SO3H functionalized ionic liquids are prepared and their performances evaluated for the condensation of furan and furfural. The ionic liquids with alkyl chain linkers are found to be more effective and acidic than those with imidazolium linked N-sulfonic acids. In addition, an increase in carbon chain length between imidazole/tri-ethylamine/pyridine and -SO3H, increases the catalytic activity of the respective ionic liquids. Among the several prepared ionic liquids, the strongly acidic imidazolium based butylsulfonic acid 6 shows the best activity with a maximum condensation product yield of 84%. This strategy offers a significantly high yield of the condensation products of furan and furfural compared to the traditional mineral acid route. The activity and stability of the -SO3H functionalized 6 is confirmed from seven successful recycles, in which there is no reduction in its activity. Finally, this new strategy is successfully extended for the condensation of furan derivatives (e.g. furan and 2-methylfuran) with several different aldehydes, ketones and alcohols.
Mechanistic study of a one-step catalytic conversion of fructose to 2,5-dimethyltetrahydrofuran
Grochowski, Matthew R.,Yang, Weiran,Sen, Ayusman
, p. 12363 - 12371 (2013/01/14)
Carbohydrates, such as fructose, can be fully dehydroxylated to 2,5-dimethyltetrahydrofuran (DMTHF), a valuable chemical and potential gasoline substitute, by the use of a dual catalytic system consisting of HI and RhX 3 (X=Cl, I). A mechanistic study has been carried out to understand the roles that both acid and metal play in the reaction. HI serves a two-fold purpose: HI acts as a dehydration agent (loss of 3 H2O) in the initial step of the reaction, and as a reducing agent for the conjugated carbinol group in a subsequent step. I2 is formed in the reduction step and metal-catalyzed hydrogenation reforms HI. The rhodium catalyst, in addition to catalyzing the reaction of iodine with hydrogen, functions as a hydrogenation catalyst for C=O and C=C bonds. A general mechanistic scheme for the overall reaction is proposed based on identification of intermediates, independent reactions of the intermediates, and deuterium labeling studies. Copyright
