Synthesis and Application of New Salan Titanium Complexes in the Catalytic Reduction of Aldehydes

Synthesis and Application of New Salan Titanium Complexes in the Catalytic Reduction of Aldehydes

Complexes of formula [(H2N2O2)TiCl2] and [(H2N2O2)Ti(OiPr)2] (H2N2O2H2 = HOPh’CH2NH(CH2)2NHCH2Ph’OH, where Ph’ = 2,4-(CMe2Ph)C6H2) were synthesized by the reaction of the salan ligand precursor H2N2O2H2 with TiCl4 and Ti(OiPr)4, respectively, in high yields. The dichlorido complex [(H2N2O2)TiCl2] re...

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Veröffentlicht in:Molecules (Basel, Switzerland) Switzerland), 2022-10, Vol.27 (20), p.6821
Hauptverfasser: Hipólito, Joana, Martins, Ana M., Alves, Luis G.
Format: Artikel
Sprache:eng
Schlagworte:
Alcohol
aldehyde reduction
Aldehydes
Alkanes
Benzaldehyde
Catalysts
Chemical properties
Chemical reduction
homogeneous catalysis
Hydrogen
Ligands
Molecular structure
Phenylacetaldehyde
salan ligands
Single crystals
Titanium
Titanium chlorides
titanium complexes
Toluene
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Zusammenfassung:Complexes of formula [(H2N2O2)TiCl2] and [(H2N2O2)Ti(OiPr)2] (H2N2O2H2 = HOPh’CH2NH(CH2)2NHCH2Ph’OH, where Ph’ = 2,4-(CMe2Ph)C6H2) were synthesized by the reaction of the salan ligand precursor H2N2O2H2 with TiCl4 and Ti(OiPr)4, respectively, in high yields. The dichlorido complex [(H2N2O2)TiCl2] revealed to be an efficient catalyst for the reduction of benzaldehyde in toluene. Full conversion was observed after 24 h at 55 °C in THF. The same catalyst also converted phenylacetaldehyde and hydrocinnamaldehyde into the corresponding alkanes quantitatively.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27206821