The cyclometalated complex 2 is easily obtained in high yield from the 14-electron complex [RuCl2{(2,6-Me2C6H3)PPh2}2] (1) by reaction with formaldehyde in the presence of triethylamine. The molecular structure of 2 has been determined by an X-ray investigation and reveals a five-coordinate complex with a δ-agostic interaction of one ortho-methyl group. By displacement of one phosphane from 2, a series of new cyclometalated complexes can be obtained. The derivative 4 bearing 2-(aminomethyl)pyridine is a highly active catalyst for hydrogen transfer reactions. Thus, a large number of ketones can be quantitatively converted to alcohols with very high TOF values (up to 63000 h-1).

Cyclometalated Ruthenium(II) Complexes as Highly Active Transfer Hydrogenation Catalysts

BARATTA, Walter;DEL ZOTTO, Alessandro;RIGO, Pierluigi
2004-01-01

Abstract

The cyclometalated complex 2 is easily obtained in high yield from the 14-electron complex [RuCl2{(2,6-Me2C6H3)PPh2}2] (1) by reaction with formaldehyde in the presence of triethylamine. The molecular structure of 2 has been determined by an X-ray investigation and reveals a five-coordinate complex with a δ-agostic interaction of one ortho-methyl group. By displacement of one phosphane from 2, a series of new cyclometalated complexes can be obtained. The derivative 4 bearing 2-(aminomethyl)pyridine is a highly active catalyst for hydrogen transfer reactions. Thus, a large number of ketones can be quantitatively converted to alcohols with very high TOF values (up to 63000 h-1).
File in questo prodotto:
File Dimensione Formato  
Angew-article.pdf

non disponibili

Tipologia: Altro materiale allegato
Licenza: Non pubblico
Dimensione 143.21 kB
Formato Adobe PDF
143.21 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

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: https://hdl.handle.net/11390/877436
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 112
  • ???jsp.display-item.citation.isi??? 106
social impact