| Effect of Co-solvent on the Palladium Catalyzed Alkoxycarbonylation of Allyl Bromide in Supercritical CO_2 |
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| 作者姓名： | Rui Qi SONG * Jian Qing ZENG Bing ZHONG Guangzhou Institute of Chemistry Chinese Academy of Sciences Guangzhou State Key Laboratory of Coal Chemistry Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan School of |
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| 作者单位： | Rui Qi SONG1，2，3*，Jian Qing ZENG1，Bing ZHONG2 1Guangzhou Institute of Chemistry，Chinese Academy of Sciences，Guangzhou 510650 2State Key Laboratory of Coal Chemistry，Institute of Coal Chemistry，Chinese Academy of Sciences，Taiyuan 030001 3School of |
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| 摘 要： | We have studied the palladium-catalyzed alkoxycarbonylation of allyl bromide in supercritical (sc) CO2 and found the reaction rate in sc CO2 was lower than those in some organic solvents1. The possible reason was the lower solubility of sc CO2 for the palladium catalyst. As an effective approach to improve the solubility of varieties of solutes, cosolvent such as ethanol has been widely used in the sc CO2 extraction2,3. Based on the above consideration, we chose several organic reagents…
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Effect of Co-solvent on the Palladium Catalyzed Alkoxycarbonylation of Allyl Bromide in Supercritical CO2 |
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| Rui Qi SONG,,*,Jian Qing ZENG,Bing ZHONG Guangzhou Institute of Chemistry,Chinese Academy of Sciences,Guangzhou State Key Laboratory of Coal Chemistry,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan School of.Effect of Co-solvent on the Palladium Catalyzed Alkoxycarbonylation of Allyl Bromide in Supercritical CO_2[J].Chinese Chemical Letters,2002,13(10). |
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| Authors: | Rui Qi SONG Jian Qing ZENG Bing ZHONG |
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| Institution: | Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650; State Key Laboratory of Coal Chemistry, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001; School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275 Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650 State Key Laboratory of Coal Chemistry, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 |
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| Abstract: | The effect of cosolvent on the palladium catalyst which catalyze alkoxycarbonylation of allyl bromide in supercritical CO2 has been investigated. It was found that a small amount of cosolvent such as ethanol, CH2Cl2 and cyclohexane can affect both reaction yields and selectivities largely. Ethanol was the most favorable cosolvent for increasing the total yield of unsaturated esters and the selectivity of 3-butenoic acid ester. Using cosolvent ethanol and cocatalyst FeCl2 simultaneously can lead to better reaction results. |
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| Keywords: | Supercritical CO2 cosolvent alkoxycarbonylation palladium cocatalyst FeCl2 |
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