Communication

Green Chem., 2008, 10, 914 - 917, DOI: 10.1039/b805748f

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Highly atom efficient aluminium triflate catalysed acetal formation

D. Bradley G. Williams and Michelle C. Lawton

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Aromatic and aliphatic acetals are formed in excellent yields under solventless conditions at room temperature within 30 minutes by treating aldehydes and ketones with 0.5 mol% Al(OTf)₃ as a recyclable catalyst in the presence of only 1.2 equivalents of an orthoester as reagent.

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