Valmet Chiral Schiff‐Base Ligands And Their Copper(II) Complexes as Organo, Homogeneous and Heterogeneous Catalysts for Henry, Cyanosilylation and Aldol Coupling Reactions - Archive ouverte HAL Access content directly
Journal Articles ChemCatChem Year : 2021

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

Zinnia Arora
  • Function : Author
  • PersonId : 1113112
Cătălin M Maxim
  • Function : Author
  • PersonId : 1113113
Bogdan Cojocaru
  • Function : Author
  • PersonId : 1113114
Octavian D Pavel
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  • PersonId : 1113115
Marius Andruh
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  • PersonId : 933033
Vasile I Pârvulescu
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  • PersonId : 1113116

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.
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hal-03374665 , version 1 (12-10-2021)

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Zinnia Arora, Diana‐ioana Eftemie, Adela Spinciu, Cătălin M Maxim, Ana‐maria Hanganu, et al.. Valmet Chiral Schiff‐Base Ligands And Their Copper(II) Complexes as Organo, Homogeneous and Heterogeneous Catalysts for Henry, Cyanosilylation and Aldol Coupling Reactions. ChemCatChem, 2021, 13 (21), pp.4634-4644. ⟨10.1002/cctc.202101149⟩. ⟨hal-03374665⟩
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