Mohamed Zahouily, Hind Charki, Younes Abrouki, Bahija Mounir, Bouchaib Bahlaouan, Ahmed Rayadh and Said Sebti Pages 354 - 359 ( 6 )
The modification on natural phosphate (NP) with sodium nitrate by calcination catalyzed Michael addition of mercaptans and amines to chalcone derivatives with high yields under mild reaction conditions. By-products of usual undesirable reaction in Michael condensation such as 1,2-addition, bis-addition and polymerization are not observed. The work-up procedure is simplified by simple filtration with the use of Na/NP-2. This catalyst is used for the facile synthesis of β-amino acid and β-amino diacid under heterogeneous conditions.
natural phosphate, carbon-sulfur bond, carbon-nitrogen bond, amino acid, amino diacid, heterogeneous catalysis, recyclable catalyst
Laboratoire de Catalyse, Synthese et Environnement, UFR de Chimie Appliquee, Universite Hassan II, Faculte des Sciences et Techniques, Mohammadia B. P. 146, 20650 Maroc.