以铁卟啉为催化剂在碱性甲醇溶液中,可用H2O2将α-或β-萘酚高选择性氧化为2-羟基-1，4-萘醌（HNQ),最高产率达57%.产物用IR,UV-Vis,MS,NMR,熔点测定和元素分析等方法表征.采用气相色谱法对催化体系监测,证明产物纯度为95%.在碱性水溶液中,利用HNQ在452nm的特征吸收,建立了UV-Vis定量分析产物的方法,探讨了NaOH浓度对HNQ吸收值的影响,测定了共存物的干扰量.
The 2-hydroxyl-1, 4-naphthoquinone(HNQ) was prepeared bycatalytic oxidation of 1-naphthol and/or 2-naphthol in NaOH methanol solution with H2O2 over 5,10,15,20-tetra(4-methoxyl)phenyl porphyrin iron chloride in yield of 57% and purity of 95%. The UV-Vis, IR, NMR, MS, mp determination and elemental analysis were used for characterization. A spectro-photometric method was proposed for quantitative analysis of HNQ using λmax=452 nm.
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