Abstract
Magnesium powder was found to be an efficient catalyst for the acetylation of amines (1) with Ac2O affording corresponding amides (2) in excellent yields (> 99%). This green synthetic protocol has utilized 2.5 mol% of magnesium powder and a stoichiometric amount of Ac2O (1.2 equiv.). Amides 2a-k were synthesized within a short reaction time (2-3 min) at an ambient temperature under solvent free condition. The products were screened against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Staphylococcus epidermidis bacterial strains. N-(2-Hydroxyphenyl)acetamide (2f) was found most active against Gram-positive S. aureus and S. epidermidis indicating its efficacy in treating skin diseases.
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