| 王志会,吕志果.Co2(CO)8催化苯乙烯氢酯基化制α-苯基丙酸酯研究[J].分子催化,2011,(5):387-392 |
| Co2(CO)8催化苯乙烯氢酯基化制α-苯基丙酸酯研究 |
| Study on the Preparation of α-phenylpropionate by Hydroesterification of Styrene Catalyzed by Cobalt Carbonyl |
| 投稿时间：2011-07-27 修订日期：2011-08-28 |
| DOI： |
| 中文关键词: 羰基钴 苯乙烯 氢酯基化 α-苯基丙酸甲酯 |
| 英文关键词:Cobalt carbonyl Styrene Hydroesterification Methyl 2-phenylpropionate |
| 基金项目:山东省教育厅基金资助项目 |
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| 中文摘要: |
| 以Co2(CO)8为催化剂，对苯乙烯与CO及甲醇氢酯基化反应制α-苯基丙酸甲酯的反应进行了研究，并根据实验结果提出了可能的催化反应机理。考察了催化剂用量、配体、溶剂、CO压力及反应温度等因素对氢酯基化反应的影响。结果表明：以甲苯为溶剂，在n(Co2(CO)8)/n(苯乙烯)=0.06，吡啶为配体且n(吡啶) / n(Co) =2，CO压力6.0 MPa、反应温度95 ℃的较佳条件下反应12 h，苯乙烯的转化率接近100 ％，α-苯基丙酸甲酯的收率达到89.07 ％，异正比24.35。 |
| 英文摘要: |
| Using Co2(CO)8 as a catalyst, the synthesis of methyl α-phenylpropionate by hydroesterification of styrene with CO and methanol was studied，and a possible reaction mechanism has also been proposed. The dosage of catalyst, promoter, solvent and reaction conditions e.g. CO pressure, reaction temperature were investigated. The optimum conditions were obtained as follows: n(Co2(CO)8)/n(styrene)=0.06, toluene as solvent, pyridine as promoter and n(pyridine)/n(Co)=2, CO pressure 6.0 MPa, reaction temperature 95 ℃ for 12 h. Under this conditions, the conversion of styrene approached 100% and the yield of methyl α-phenylpropionate reached 89.07 %, meanwhile i/n=24.35. |
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