4265-25-2, Name is 2-Methylbenzofuran, belongs to benzofuran compound, is a common compound. Quality Control of 2-MethylbenzofuranIn an article, once mentioned the new application about 4265-25-2.
Ruthenium-catalyzed intramolecular cyclization of hetero-functionalized allylbenzenes
Intramolecular addition of heterofunctionalities to C{double bond, long}C double bonds without beta-hydride elimination was investigated and catalyzed by ruthenium complexes. The combination of RuCl3 ¡¤ nH2O (10 mol%) and 3 equiv. of AgOTf acted as a catalyst for cyclization of 2-allylphenol (1a) to 2,3-dihydro-2-methylbenzofuran (2a) in good yield in the presence of Cu(OTf)2 as a co-catalyst and PPh3 as a ligand. This catalyst system also catalyzed the cyclization of 2-allylbenzoic acid to lactone in 91% yield. Then, a new catalyst system (RuCp*Cl2)2 (1.0 mol%)/4AgOTf/4PPh3, was found to be more active even in the absence of Cu(OTf)2. Furthermore, this catalysis was applied to asymmetric reaction of 2-allylphenol (1a). When using TolBINAP as a ligand, over 60% e.e. was achieved.
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Reference£º
Benzofuran – Wikipedia,
Benzofuran | C8H228O – PubChem