中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (2S)-2-((4-acetamido-3,6-dioxocyclohexa-1,4-dien-1-yl)amino)ethanoic acid | —— | C10H10N2O5 | 238.2 |
—— | 2-acetamido-5-((2-(pyrrolidin-1-yl)ethyl)amino)-1,4-benzoquinone | —— | C14H19N3O3 | 277.323 |
—— | 2-acetamido-5-bromo-1,4-benzoquinone | 2072-30-2 | C8H6BrNO3 | 244.045 |
—— | 2-acetamido-5-((2-(pyridin-2-yl)ethyl)amino)-1,4-benzoquinone | —— | C15H15N3O3 | 285.302 |
—— | abenquine C | 1355024-29-1 | C13H16N2O5 | 280.28 |
—— | (2S)-2-((4-acetamido-3,6-dioxocyclohexa-1,4-dien-1-yl)amino)-3-methylpentanoic acid | —— | C14H18N2O5 | 294.307 |
—— | abenquine A | 1355024-26-8 | C17H16N2O5 | 328.324 |
A protocol based on [RuIII(Me3tacn)(CF3CO2)2(H2O)]CF3CO2 (1, Me3tacn = 1,4,7-trimethyl-1,4,7-triazacyclononane) as catalyst and tert-butyl hydroperoxide (TBHP) as oxidant was developed for oxidation of anisoles to p-benzoquinone monoketals. This reaction can be formally considered as regioselective aromatic C-H oxidation. With 2-methoxyanisole as substrate, 3,4-dimethoxy-4-tert-butoxy-2,5-cyclohexadienone can be obtained in up to 82% yield based on 84% substrate conversion.Key words: oxidation, quinones, tert-butyl hydroperoxide, ruthenium catalyst.