| 초록 |
Cr(VI)-heterocyclic complex(2,4'-bipyridinium chlorochromate, isoquinolinium dichromate, 2-methylpyrazinium chlorochromate) was synthesized by the reaction between of heterocyclic compound(2,4'-bipyridine, isoquinoline, 2-methylpyrazine) and chromium trioxide, and characterized by IR and ICP. The oxidation of benzyl alcohol using Cr(VI)-heterocyclic complex(2,4'- bipyr idinium chlorochromate, isoquinolinium dichromate, 2-methylpyrazinium chlorochromate) in various solvents showed that the reactivity increased with the increase of the dielectric constant(ε), in the order: cyclohexene ＜ chloroform ＜ acetone ＜ N,N-dimethylformamide. In the presence of N,N-dimethylformamide(DMF) solvent with acidic catalyst such as hydrochloric acid(HCl solution), Cr(VI)-heterocyclic complex(2,4'-bipyridinium chlorochr- omate, isoquinolinium dichromate, 2-methylpyrazinium chlorochromate) oxidized benzyl alcohol. |
