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Valmet Chiral Schiff‐Base Ligands And Their Copper(II) Complexes as Organo, Homogeneous and Heterogeneous Catalysts for Henry, Cyanosilylation and Aldol Coupling Reactions

Authors: Zinnia Arora; Diana-Ioana Eftemie; Adela Spinciu; Catalin Maxim; Anamaria Hanganu; Madalina Tudorache; Bogdan Cojocaru; +4 Authors

Valmet Chiral Schiff‐Base Ligands And Their Copper(II) Complexes as Organo, Homogeneous and Heterogeneous Catalysts for Henry, Cyanosilylation and Aldol Coupling Reactions

Abstract

Cyanosilylation, aldol coupling and asymmetric Henry reactions were carried out with L- and D-valmet ligands in different configurations: i) coordinated to sodium ions, as organocatalysts, with week base properties, ii) complexes with copper(II), as homogeneous catalysts, and iii) immobilized copper(II) complexes onto graphene oxide (GO) as heterogeneous catalysts. For the reaction of benzaldehyde and nitromethane in water these afforded an asymmetric Henry reaction, with a spectacular increase of the conversion and ee (92.5 and 95.8 %, respectively) after the deposition on GO. Ligand complexed copper was also effective for cyanosilylation and Aldol coupling reaction.

International audience

Country
France
Subjects by Vocabulary

Microsoft Academic Graph classification: Nitroaldol reaction chemistry.chemical_element Coupling reaction Catalysis Benzaldehyde chemistry.chemical_compound Aldol reaction Polymer chemistry Schiff base Ligand Copper chemistry

Keywords

Cyanosilylation, L- and D-valmet ligands, Cu-complex, Catalysis, Inorganic Chemistry, Immobilization, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Physical and Theoretical Chemistry, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Organic Chemistry, [CHIM.CATA]Chemical Sciences/Catalysis, Aldol reaction;Cu-complex;Cyanosilylation;Immobilization;Henry reaction;L- and D-valmet ligands, Aldol reaction, Henry reaction

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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