硝酸鐵催化氧化合成異色滿酮和雜蒽酮的研究
[Abstract]:Isomone and heteranthenone have been widely used in medicine, pesticide, chemistry, materials and so on. Therefore, it is of great significance to develop a simple and efficient method for the preparation of isocolone and heteranthenone compounds. In this paper, the benzyl oxidation method was used to synthesize isocolone and anthrone compounds in one step. Firstly, isocolor compounds were prepared from phenylethanes by two-step reaction, and oxy-heteranthracene compounds were prepared from salicylaldehyde and cyclohexene ketones by oxidative coupling reaction. Thioanthracene compounds were prepared by reduction from thioxanthrone compounds. Secondly, the catalytic oxidation system of Fe (NO_3) 3 9H_2O/KPF6/O_2 was applied to the preparation of isocolor ketones. The effects of solvent, catalyst, temperature, oxygen, amount of catalyst and strong acid salt on the reaction were investigated. The results showed that with 10 mol% Fe (NO_3) 3 9H_2O as catalyst, KPF6 of 15 mol% as additive, acetonitrile of 3 mL as solvent, oxygen as oxidant, reaction under 80oC for 5 h, the yield of isocolone was 94%. The reaction system is suitable for most heterocolor compounds and the separation yield of the product is 46-95. Subsequently, the catalytic oxidation system of Fe (NO_3) 3 9H_2O/KPF6/O_2 was applied to the preparation of heteranthrones. For most substrates, the optimum conditions for the preparation of isocolone are also suitable for heteranthenones, and the reaction time is reduced to 2 h, and the separation yield is 91-97. For some substrates with poor solubility in acetonitrile, the amount of acetonitrile and catalyst should be increased and the reaction time should be prolonged. Finally, the reaction mechanism of the system was discussed by designing a controlled experiment according to the literature. In conclusion, we have successfully developed a method for the synthesis of isocolone and heteranthronone, which shows high activity for most substrates. However, the heteroxanthrone in this thesis is only for oxyanthrone and thioxanthrone, excluding azanthronone.
【學(xué)位授予單位】:浙江工業(yè)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:O621.3
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