化学
离子液体
催化作用
乙烯
环氧乙烷
有机化学
联轴节(管道)
氧化物
环氧丙烷
药物化学
共聚物
机械工程
工程类
聚合物
作者
Zhaobing Guo,Hengsheng Wang,Zhiguo Lv,Zhihui Wang,Tao Nie,Weiwei Zhang
标识
DOI:10.1016/j.jorganchem.2011.08.022
摘要
Abstract In this paper, synthesis of 1,3-propanediol (1,3-PDO) through coupling of hydroesterification-hydrogenation from ethylene oxide (EO) catalyzed by 1-butyl-3-methylimidazolium cobalt tetracarbonyl [Bmim][Co(CO) 4 ] functional ionic liquid which was prepared by metathesis reaction between [Bmim]Cl and KCo(CO) 4 has been studied. The structure of [Bmim][Co(CO) 4 ] was characterized by FT-IR and 1 H NMR. Using [Bmim][Co(CO) 4 ] as catalyst and [Bmim]PF 6 as solvent, 1,3-PDO was prepared for the first time by coupling of hydroesterifaction of EO and hydrogenation of methyl 3-hydroxypropionate (3-HPM). The yield of 3-HPM can reach 90.8%, while the yield of 1,3-PDO up to 82.9%. The catalyst can be separated from the product mixture by extraction with deionized water and recycled several times without significant loss of catalytic efficiency. A possible reaction mechanism has also been proposed.
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