溴化甲基咪唑键联壳聚糖的制备及其催化N-羟烷基化研究
Preparation and N-Hydroxyl Alkylation Catalytic Performance of Methyl Imidazole Bromide Bonded on Chitosan
Received date: 2014-12-11
Revised date: 2015-01-19
Online published: 2015-03-19
张磊 , 王晓燕 , 习晓娟 , 刘蒲 . 溴化甲基咪唑键联壳聚糖的制备及其催化N-羟烷基化研究[J]. 有机化学, 2015 , 35(7) : 1475 -1483 . DOI: 10.6023/cjoc201412019
Ionic liquid bonded on chitosan derivative (IL-b-CS) was synthesized by the reaction of 3-bromoalkyl-1-methyl imidazolium bromide with chitosan in the environmentally friendly water medium. The characterization of IL-b-CS was carried out by Fourier transform infrared spectroscopy (FT-IR), the nuclear magnetic resonance (NMR), X-ray diffraction (XRD) and the thermo gravimetric (TG), respectively. Using IL-b-CS as catalyst, the catalytic performance on the N-hydroxyl alkylation reaction of aromatic amine and ethylene carbonate under the solvent-free conditions was studied. Effect of the reaction conditions (for example: catalyst dosage, reaction material ratio, reaction temperature and reaction time etc.) on its catalytic activity was investigated in details.
Key words： ionic liquid; bonding; chitosan; preparation; catalysis
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