Ketalizations, aluminum trifluoromethanesulfonate

Ketalization. Aluminum trifluoromethanesulfonate efficiently catalyzes the formation of acetals from various aromatic and ahphatic aldehydes and ketones in low catalyst loadings (1 mol%) and in short reaction times in neat conditions (eq 2). The title compound appears to be a mild catalyst for this reaction. Acid-sensitive sUyl ether of sahcylaldehyde was stable in these conditions. Notably, the catalyst could be recycled up to four times without loss of activity. An efficient method for thioacetaUzation of carbonyl compounds has also been described. ... 

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See also in sourсe #XX -- [ ]

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