L-proline promoted Ullmann-type reaction of vinyl bromides with imidazoles in ionic liquids |
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| Authors: | Wang Zhiming Bao Weiliang Jiang Yong |
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| Institution: | Department of Chemistry, Zhejiang University, Xi Xi Campus, Hangzhou, Zhejiang 310028, PR China. |
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| Abstract: | The Ullmann-type coupling reaction of vinyl bromides and imidazoles in ILs at 90-110 degrees C gave the corresponding N-vinylimidazoles in good to excellent yields by using L-proline as the ligand; the double bond geometry of the vinyl bromides was retained under the reaction conditions. |
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