Acetic acid functionalized ionic liquid systems: An efficient and recyclable catalyst for the regioselective ring opening of epoxides with NaN3 - 18/05/17
, Elaheh Salehi b, Rahimeh Hajinasiri c, Saeid Afshari Sharif Abad cBienvenue sur EM-consulte, la référence des professionnels de santé.
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Abstract |
In the present study, an environmentally benign, efficient, and solvent-free procedure was developed for the synthesis of 1,2-azidoalcohols by the regioselective ring opening of some epoxides with sodium azide (NaN3) in the presence of an acetic acid functionalized imidazolium salt [Cmmim]BF4 or [Cmmim]Br as a green and Brønsted acidic ionic liquid (BAIL) catalyst under mild and neutral reaction conditions at 60 °C. The remarkable features of this procedure are excellent regioselectivity, simple work-up procedure, high yields of products, short reaction times, and ease of recyclability of ionic liquids.
Le texte complet de cet article est disponible en PDF.Graphical abstract |
A novel acetic acid functionalized imidazolium salt [Cmmim]BF4 or [Cmmim]Br as an efficient and reusable Brønsted ionic liquid catalyst was synthesized. This ionic liquid has been found to have high catalytic activity in the synthesis of 1,2-azidoalcohols by regioselective ring opening of some epoxides with sodium azide (NaN3).
Keywords : Ionic liquids (ILs), Azidoalcohols, Regioselectivity, Brønsted acid catalyst, Epoxides, Imidazolium salts
Plan
Vol 20 - N° 5
P. 554-558 - mai 2017 Retour au numéro
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