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Published:
Oct 8, 2015Keywords:
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An Efficient and Green Procedure for the Preparation of Acylals from Aldehydes Catalyzed by Alum [KAl(SO<sub>4</sub>)<sub>2</sub>.12H<sub>2</sub>O]
Abstract
Alum [KAl(SO4)2.12H2O] is an inexpensive, efficient, non-toxic and mild catalyst for the preparation of acylals from aromatic and heteroaryl aldehydes with acetic anhydride at room temperature under solvent-free conditions. This method gives remarkable advantages such as excellent chemoselectivity, mild reaction conditions, short reaction times and excellent yields, and offers a green synthetic solution by avoiding toxic catalysts and hazardous solvents.
Keywords: Alum, acylals, aromatic and heteroaryl aldehydes, solvent-free synthesis, room temperature
