Recyclable zinc (II) ionic liquid catalyzed synthesis of azides by direct azidation of alcohols using trimethylsilylazide at room temperature |
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| Institution: | 1. Department of Chemistry, University of Delhi, Delhi 110007, India;2. Department of Chemistry, M.M. Modi College, Patiala 147001, Punjab, India;1. R&D Centre of Pharmaceuticals School of Chemical Engineering and the Environment, Beijing Institute of Technology, 5th Zhongguancun South Street, Haidian District, Beijing 100081, China;2. Institut of Process Engineering, Chinese Academy of Science, 1 North 2nd Street, Zhongguancun, Haidian District, Beijing 100190, China;3. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, 5th Zhongguancun South Street, Haidian District, Beijing 100081, China |
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| Abstract: | A new efficient method has been reported for the synthesis of azides by direct azidation of alcohols with TMSN3 in presence of recyclable task specific ionic liquid (TSIL) bmim]ZnCl3 as a catalyst in DCM at room temperature. Ionic liquid bmim]ZnCl3 was synthesized under solvent free conditions and characterized by IR, 1H NMR, 13C NMR and HRMS. The Lewis acidity of catalyst was also examined using IR spectroscopy. The main features of this new methodology are high yields of products, recyclability of catalyst, scalability of reaction to gram scale and short reaction time. |
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| Keywords: | Ionic liquid Lewis acid Azides Green methodology |
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