Heterocycles p. 677 - 682 (2007)
Update date:2022-08-29
Topics:
Dabiri, Minoo
Salehi, Peyman
Zolfigol, Mohammad Ali
Baghbanzadeh, Mostafa
Silica sulfuric acid is used as an efficient catalyst in the Pechmann condensation of phenols with β-keto-esters leading to the formation of coumarin derivatives in excellent yields under solvent-free conditions. It was found that the catalyst could be recycled and reused for several runs.
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