羧化
化学
酮
产量(工程)
碘甲烷
解吸
基质(水族馆)
烯醇
碘化物
有机化学
光化学
催化作用
材料科学
吸附
海洋学
冶金
地质学
作者
Eric J. Beckman,Pradip Munshi
出处
期刊:Green Chemistry
[The Royal Society of Chemistry]
日期:2011-01-01
卷期号:13 (2): 376-376
被引量:32
摘要
A reversible CO2 carrier (RCC) has been developed to perform carboxylation of ketone to β-ketoester under ambient CO2 pressure and temperature. RCC has been synthesized by immobilizing 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) on methylhydrosiloxane support and reacting with CO2 with 100% degree of functionalisation. RCC is found to be recyclable and shows retention of activity in 5 recycles. CO2 absorption under ambient temperature and desorption at 120 °C renders the material suitable for carrying out carboxylation reactions at 25 °C with excellent yields. The yield of the reaction can reach up to 100% with TON 200 in 4 h. The extent of the reaction primarily depends upon enol content of the substrate. β-Ketoacid produced during the reaction can be isolated and converted to its corresponding methyl ester derivative by reacting with methyl iodide.
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