The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 497-23-4, Name is Furan-2(5H)-one, SMILES is O=C1OCC=C1, in an article , author is Hu, Sha, once mentioned of 497-23-4, COA of Formula: C4H4O2.
TfOH-Catalyzed Cascade C-H Activation/Lactonization of Phenols with alpha-Aryl-alpha-diazoesters: Rapid Access to alpha-Aryl Benzofuranones
Aryl benzofuranones are privileged structural units present in natural products and pharmaceutically relevant compounds with high bioactivity and therapeutic value; synthetic access to these scaffolds remains an area of intensive interest. A new and efficient TfOH-catalyzed cascade ortho C-H activation/lactonization of phenols with alpha-aryl-alpha-diazoacetates is reported. This metal-free protocol provides an operationally simple and rapid method for the one-pot assembly of diverse alpha-aryl benzofuranones in high yields with broad substrate scope, a readily starting material, good chemo-regioselectivity, and excellent functional group compatibility.
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Reference:
Benzofuran – Wikipedia,
,Benzofuran | C8H6O – PubChem