In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Product Details of 66826-78-6, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 66826-78-6, name is 5-Bromo-2,3-dihydrobenzofuran. In an article，Which mentioned a new discovery about 66826-78-6
Trifluoromethylthiolation of aromatic compounds with different electrophilic reagents of the type ArNHSCF3 was studied in the presence of triflic acid as an activator. The effect of the reagent structure on the reactivity was studied with three different reagents: PhNHSCF3 (H/SCF3, 1a), 4-ClC6H4NHSCF3 (Cl/SCF3, 1b) and C6F5NHSCF3 (F5/SCF3, 1c). p-Chloro substituted reagent 1b was more stable than the unsubstituted 1a and was the most effective because it could not react by trifluoromethylthiolation of itself. This reaction was the most important side reaction of 1a. The pentafluoro derivative 1c was less reactive. Solvent played an important role in the transformation and, depending on the substrate, dichloromethane, hexane or trifluoroacetic acid gave the best yield of various trifluoromethylthiolated aromatic molecules (63?98 %).
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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H3364O – PubChem