کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1325103 | 977369 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Catalytic performance of [Bmim][Co(CO)4] functional ionic liquids for preparation of 1,3-propanediol by coupling of hydroesterification-hydrogenation from ethylene oxide Catalytic performance of [Bmim][Co(CO)4] functional ionic liquids for preparation of 1,3-propanediol by coupling of hydroesterification-hydrogenation from ethylene oxide](/preview/png/1325103.png)
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 1H NMR. Using [Bmim][Co(CO)4] as catalyst and [Bmim]PF6 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.
1-Butyl-3-methylimidazolium cobalt tetracarbonyl [Bmim][Co(CO)4] functional ionic liquid was prepared by metathesis reaction between [Bmim]Cl and KCo(CO)4. Using [Bmim][Co(CO)4] as catalyst and [Bmim]PF6 as solvent, 1,3-propanediol was prepared by hydrogenation of the intermediate methyl 3-hydroxypropionate which was synthesized by hydroesterification of ethylene oxideFigure optionsDownload as PowerPoint slideHighlights
► Catalytic performance of [Bmim][Co(CO)4] was first studied.
► 1,3-PDO was prepared by coupling of hydroesterifaction-hydrogenation of EO.
► The catalyst system can be recoverable and recycled several times.
► A possible reaction mechanism has also been proposed for the first time.
Journal: Journal of Organometallic Chemistry - Volume 696, Issue 23, 15 November 2011, Pages 3668–3672