In heterogeneous catalysis, the catalyst is in a different phase from the reactants. category: Tetrahydrofurans, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 4971-56-6, name is Furan-2,4(3H,5H)-dione. In an article£¬Which mentioned a new discovery about 4971-56-6
106. Photochemical Synthesis of Cyclic 2-(2,2,-Dimethylpropylidene)-1,3-Dicarbonyl Compounds
Photolysis (lambda=254 nm) of 4-(t-Bu)-substituted -fused bi- and tricyclic pyrandiones 5 affords title compounds 4 in good yields as well a small amounts of spiroalkanediones 8.The alkyl-substitution pattern at C(4) of the pyran ring in 5 determines the relative amount of alpha- vs. beta-cleavage products obtained from the primarly formed acyl-vinyloxy biradical.
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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem