Abstract
Alum (KAl(SO 4) 2·12H 2O) is an inexpensive, efficient, non-toxic and mild catalyst for the one-pot synthesis of α-aminophosphonates. A three component reaction of an aldehyde/ketone, an amine and triethyl phosphite was carried out under solvent-free conditions to afford the corresponding α-aminophosphonates in short reaction times and high yields with the green aspects by avoiding toxic catalysts and solvents.
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