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★ Synthesis of carbamates from aliphatic amines and dimethyl carbonate catalyzed by acid functional ionic liquids
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Synthesis of carbamates from aliphatic amines and dimethyl carbonate catalyzed by acid functional ionic liquids |
周瀚成 / 邓友全 |
203.18 KB |
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Selective synthesis of carbamates from amines and dimethyl carbonate were studied in the presence of various ionic liquids as catalysts. The –SO3H-functionalized ionic liquid was found to be the most active catalyst among the applied ionic liquids, and nearly 100% conversion and 95% selectivity were achieved when using 1,6-hexanediamine as reactant. The acid functional ionic liquid catalyst system is also readily separable and reusable after reaction. Keywords: Green chemistry; Ionic liquid; Carbamates; Amine; Non-phosgene ★★★☆☆ Zhou HC,Shi F,Tian X,et al. Synthesis Of Carbamates From Aliphatic Amines And Dimethyl Carbonate Catalyzed By Acid Functional Ionic Liquids[J]. Journal Of Molecular Catalysis A: Chemical,2007,271:89-92. |