A new octahedral titanium binaphthyl-bridged Schiff base complex (1) was synthesized and characterized. Analysis by 1H and 13C-NMR spectroscopy and X-ray crystallography indicated that the C1-symmetric cis- isomer is preferentially formed as one of the two possible enantiomeric couples of diasteroisomers. The catalytic behaviour of the complex 1 toward epoxidation of allylic alcohols was investigated. Using only 0.5% mol of the complex 1 the epoxyalcohols are obtained in very high regio-, chemo- and diastereoselctive way by the MW exposure of the mixture in solvent free-conditions.

Synthesis, crystal structure and application in regio- and stereoselective epoxidation of allylic alcohols of a titanium binaphthyl-bridged Schiff base complex

SORIENTE, Annunziata;DE ROSA, Margherita;LAMBERTI, Marina;TEDESCO, Consiglia;PELLECCHIA, Claudio
2005

Abstract

A new octahedral titanium binaphthyl-bridged Schiff base complex (1) was synthesized and characterized. Analysis by 1H and 13C-NMR spectroscopy and X-ray crystallography indicated that the C1-symmetric cis- isomer is preferentially formed as one of the two possible enantiomeric couples of diasteroisomers. The catalytic behaviour of the complex 1 toward epoxidation of allylic alcohols was investigated. Using only 0.5% mol of the complex 1 the epoxyalcohols are obtained in very high regio-, chemo- and diastereoselctive way by the MW exposure of the mixture in solvent free-conditions.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/1061194
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 21
  • ???jsp.display-item.citation.isi??? 22
social impact