Protic pyridinium ionic liquid as a green and highly efficient catalyst for the synthesis of polyhydroquinoline derivatives via Hantzsch condensation in water
…, H Alinezhad, M Norouzi, S Baghery, M Akbari
Index: Tajbakhsh, Mahmood; Alinezhad, Heshmatollah; Norouzi, Mohammad; Baghery, Saeed; Akbari, Maryam Journal of Molecular Liquids, 2013 , vol. 177, p. 44 - 48
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Citation Number: 36
Abstract
The four-component Hantzsch condensation reaction of dimedone, ethyl acetoacetate, ammonium acetate and various aromatic and aliphatic aldehydes in the presence of 2- methylpyridinium trifluoromethanesulfonate ([2-MPyH] OTf) as a green and highly efficient catalyst in water affords polyhydroquinoline derivatives in good to excellent yields. This reaction has been carried out in the presence of 1mol% of [2-MPyH] OTf at room ...
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