过硫酸银引发的乙酰丙酸氧化脱羧反应。
Oxidative decarboxylation of levulinic acid by silver(I)/persulfate.
机构信息
Department of Resources Science and Engineering, State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
出版信息
Molecules. 2011 Mar 23;16(3):2714-25. doi: 10.3390/molecules16032714.
The oxidative decarboxylation of levulinic acid (LA) by silver(I)/persulfate [Ag(I)/S₂O₈²⁻] has been investigated in this paper. The effects of buffer solution, initial pH value, time and temperature and dosages of Ag(I)/S₂O₈²⁻ on the decarboxylation of LA were examined in batch experiments and a reaction scheme was proposed on basis of the reaction process. The experimental results showed that a solution of NaOH-KH₂PO₄ was comparatively suitable for the LA decarboxylation reaction by silver(I)/persulfate. Under optimum conditions (temperature 160 °C, pH 5.0, and time 0.5 h), the rate of LA conversion in NaOH-KH₂PO₄ solutions with an initial concentration of 0.01 mol LA reached 70.2%, 2-butanone (methyl ethyl ketone) was the single product in the gas phase and the resulted molar yield reached 44.2%.
本文研究了银（I）/过硫酸盐[Ag（I）/S₂O₈²⁻]引发的乙酰丙酸（LA）的氧化脱羧反应。通过批实验考察了缓冲溶液、初始 pH 值、时间和温度以及 Ag（I）/S₂O₈²⁻用量对 LA 脱羧反应的影响，并根据反应过程提出了反应方案。实验结果表明，NaOH-KH₂PO₄溶液比较适合银（I）/过硫酸盐引发的 LA 脱羧反应。在最佳条件下（温度 160°C，pH 值 5.0，时间 0.5 h），初始浓度为 0.01 mol LA 的 NaOH-KH₂PO₄溶液中 LA 的转化率达到 70.2%，气相中生成的唯一产物是 2-丁酮（甲基乙基酮），摩尔收率达到 44.2%。
Zotero 插件