Synthesis of 4(5)-phenacyl-imidazoles from isoxazole side-chain rearrangements
作者:Annamaria Martorana、Antonio Palumbo Piccionello、Silvestre Buscemi、Gianluca Giorgi、Andrea Pace
DOI:10.1039/c0ob00511h
日期:——
A novel base-induced rearrangement of isoxazoles into imidazole derivatives is reported. In the isoxazole series, this represents the first example of a three-atom side-chain rearrangement involving a CNC sequence. The reactions are carried out under nitrogen and produced 2-aryl-4(5)-phenacyl-5(4)-phenyl-imidazoles in high yields. In the presence of oxygen, a cascade rearrangement-oxidation reaction