In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Application In Synthesis of 3-Methyldihydrofuran-2(3H)-one, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 1679-47-6, name is 3-Methyldihydrofuran-2(3H)-one. In an article，Which mentioned a new discovery about 1679-47-6
The rhodium-assisted carbonylation of tetrahydrofuran affords three C5-lactones (delta- and gamma-valerolactone, and alpha-methyl-gamma-butyrolactone) and valeric acid under relatively mild conditions.The selectivity of the lactones is excellent in the liquid phase.Depending on the promoting effect of iodine or lithium iodide, the reaction is directed mainly towards either delta-valerolactone or the two methylbutyrolactones.However, the catalytic system induced ionic polymerization of delta-valerolactone, limiting the yield of free lactone considerably.
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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem