multicomponent preparation of highly functionalized piperidines using fecl3.6h2o as an efficient catalyst
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abstract
fecl3.6h2o was used as an efficient catalyst for the synthesis of highly functionalized piperidines via a one-pot five-component reaction of aromatic amines, aromatic aldehydes and β-keto esters in etoh at room temperature. the remarkable advantages offered by this method are good yields, simple procedure, short reaction times, no need to column chromatography and easy work-up. the structures of all compounds were characterized by comparison of their ir and nmr spectra with authentic samples. also, the relative stereochemistry of these piperidines has been confirmed by single x-ray crystallography analysis in previously reported literature. starting materials with electron-deficient or electron-releasing groups were reacted efficiently.
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Journal title:
iranian journal of catalysisPublisher: islamic azad university, shahreza branch
ISSN 2252-0236
volume 5
issue 1 2015
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