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Letters in Organic Chemistry

Editor-in-Chief

ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

Natural Phosphate Modified with Sodium Nitrate: New Efficient Catalyst for the Construction of a Carbon-Sulfur and Carbon-Nitrogen Bonds

Author(s): Mohamed Zahouily, Hind Charki, Younes Abrouki, Bahija Mounir, Bouchaib Bahlaouan, Ahmed Rayadh and Said Sebti

Volume 2, Issue 4, 2005

Page: [354 - 359] Pages: 6

DOI: 10.2174/1570178054038830

Price: $65

Abstract

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.

Keywords: natural phosphate, carbon-sulfur bond, carbon-nitrogen bond, amino acid, amino diacid, heterogeneous catalysis, recyclable catalyst


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