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Journal of the Mexican Chemical Society

Print version ISSN 1870-249X


NEGRON, Guillermo E. et al. A Mild and Efficient Method for the Chemoselective Synthesis of Acylals from Aromatic Aldehydes and their Deprotections Catalyzed by Sulfated Zirconia. J. Mex. Chem. Soc [online]. 2005, vol.49, n.2, pp.252-256. ISSN 1870-249X.

Aldehydes can be converted to acylals by treatment with acetic anhydride in the presence of sulfated zirconia in excellent yield at 0°C. Ketones and aliphatic aldehydes are found to be unaffected under the reaction conditions. The deprotection of the resulting acylals is achieved using the same catalyst at 60 oC. The catalyst can be reused in two cycles without losing its activity.

Keywords : acylals; sulfated zirconia; protection; deprotection.

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