Tukacs, Jozsef M. published the artcileContinuous flow hydrogenation of methyl and ethyl levulinate: an alternative route to γ-valerolactone production, Quality Control of 539-88-8, the main research area is methyl ethyl levulinate valerolactone continuous flow hydrogenation; flow chemistry; heterogeneous catalysis; hydrogenation; γ-valerolactone.
Heterogeneous continuous transformation of Me levulinate (ML) and Et levulinate (EL) to γ-valerolactone (GVL), as a promising C5-platform mol. was studied at 100°C. It was proved that the H-Cube continuous hydrogenation system equipped with 5% Ru/C CatCart is suitable for the reduction of both levulinate esters. While excellent conversion rates (greater than 99.9%) of ML and EL could be achieved in water and corresponding alcs., the selectivities of GVL were primarily affected by the solvent used. In water, 100% conversion and ca 50% selectivity that represent ca 0.45 molGVL g-1metalh-1 productivity towards GVL, were obtained under 100 bar of total system pressure. The application of alcs. as a solvent, which maintained high conversion rates up to 1 mL min-1 flow rate, resulted in lower productivities (less than 0.2 molGVL g-1metal h-1) of GVL. Therefore, from a synthesis point of view, the corresponding 4- hydroxyvalerate esters could be obtained even at a higher reaction rate. The addition of sulfonated triphenylphosphine ligand (TPPTS) allowed reduction of the system pressure and resulted in the higher selectivity towards GVL.
Royal Society Open Science published new progress about Biomass. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Quality Control of 539-88-8.
Referemce:
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