Aidan E. England, Gabriel Hart Slater-Eddy, Laura Earnden, Joshua van der Zalm, Marcel Schlaf
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引用次数: 0
Abstract
A tandem catalyst system comprised of trifluoromethanesulfonic (triflic acid, HOTf) or hafnium tetratriflate (Hf(OTf)4) and Ru/C in glacial acetic acid (HOAc) as the solvent at 200 °C and ∼ 7 MPa hydrogen pressure in a batch reactor converts penta-acetyl-xylitol ((2R,3R,4S)-pentane-1,2,3,4,5-penta-acetoxy-pentane) or unprotected xylitol to 3-acetoxymethylene-tetrahydrofuran (3-AMT) in up to 15% yield at full conversion. A comparative analysis by SEM-EDS and XPS of the fresh commercial Ru/C catalyst versus catalyst reused and recovered after five cycles shows increasing aggregation of ruthenium to larger particles with a concomitant decrease in yield of 3-AMT to 8%–9% for cycles four and five. 3-AMT or its hydrolysis product 3-hydroxymethyl-tetrahydrofuran (3-HMT) are valuable synthons for the preparation of agrochemicals, pharmaceuticals, and specialty polyurethanes and polyesters.
期刊介绍：
With an impact factor of 4.495 (2018), ChemCatChem is one of the premier journals in the field of catalysis. The journal provides primary research papers and critical secondary information on heterogeneous, homogeneous and bio- and nanocatalysis. The journal is well placed to strengthen cross-communication within between these communities. Its authors and readers come from academia, the chemical industry, and government laboratories across the world. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies, and is supported by the German Catalysis Society.
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