Abstract
α-Hydroxyketones are oxidatively cyclized with o-phenylenediamines in toluene at 120 °C under an atmosphere of air in the presence of a catalytic amount of a copper catalyst along with powdered 4A molecular sieves to afford the corresponding quinoxalines in high yields. The reaction is applicable to a wide range of α-hydroxyketones which have various aryl and alkyl groups attached to carbonyl carbon.
Original language | English |
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Pages (from-to) | 205-210 |
Number of pages | 6 |
Journal | Journal of Molecular Catalysis A: Chemical |
Volume | 276 |
Issue number | 1-2 |
DOIs | |
State | Published - 17 Oct 2007 |
Keywords
- α-Hydroxyketones
- Copper catalyst
- o-Phenylenediamines
- Oxidative cyclization
- Quinoxalines