Silica supported perchloric acid (HClO 4–SiO 2): A mild, reusable and highly efficient heterogeneous catalyst for the synthesis of amidoalkyl naphthols

An efficient and direct procedure has been developed for the preparation of amidoalkyl naphthols by a one-pot condensation of aryl aldehydes, 2-naphthol and urea or amides, in the presence of HClO 4–SiO 2 as a heterogeneous catalyst. The reactions were carried out under reflux and solvent-free condi...

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Bibliographic Details
Published in:Chinese chemical letters 2008-10, Vol.19 (10), p.1171-1174
Main Authors: Mahdavinia, Gholam Hossein, Bigdeli, Mohammad A., Heravi, Majid M.
Format: Article
Language:English
Subjects:
Amidoalkyl naphthol
HClO 4–SiO 2
Heterogeneous catalyst
Multicomponent reaction
One-pot
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Summary:An efficient and direct procedure has been developed for the preparation of amidoalkyl naphthols by a one-pot condensation of aryl aldehydes, 2-naphthol and urea or amides, in the presence of HClO 4–SiO 2 as a heterogeneous catalyst. The reactions were carried out under reflux and solvent-free conditions. The present methodology offers several advantages such as excellent yields, simple procedure, easy work-up and ecofriendly reaction condition. The catalyst is easily prepared, stable, reusable and efficient under the reaction conditions.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2008.06.048