Palladium macrocomplexes for the aerobic oxidation of alcohols (Abstract/Poster in atti di convegno)

Type

• Prodotto della ricerca (Classe)
• Abstract/Poster in atti di convegno (Classe)

Label

• Palladium macrocomplexes for the aerobic oxidation of alcohols (Abstract/Poster in atti di convegno) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

Alternative label

• Giachi, Guido; Frediani, Marco; Oberhauser, Werner; Passaglia, Elisa (2012)
  Palladium macrocomplexes for the aerobic oxidation of alcohols
  in 25th ICOMC INTERNATIONAL CONFERENCE ON ORGANOMETALLIC CHEMISTRY, Lisbona, 2.-7. settembre
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Giachi, Guido; Frediani, Marco; Oberhauser, Werner; Passaglia, Elisa (literal)

Note

• Poster (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Dipartimento di Chimica , Università di Firenze, via della Lastruccia 13, 50019 Sesto Fiorentino, Firenze, Italy Istituto di Chimica dei Composti Organometallici (ICCOM) CNR, via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy ICCOM-CNR, UOS Pisa, Area della Ricerca, via Moruzzi 1, 56124 Pisa, Italy (literal)

Titolo

• Palladium macrocomplexes for the aerobic oxidation of alcohols (literal)

Abstract

• The homogeneous aerobic alcohol oxidation to ketones or aldehydes catalyzed by palladium(II) complexes bearing nitrogen ligands is of considerable interest since water or hydrogen peroxide are formed as the only side products.[1] Among palladium-based complexes, used for the latter catalytic reactions, Uemura's catalyst (i.e. trans-[Pd(OAc)2(pyridine)2] (OAc = acetate)) has found wide application.[2] Recently we anchored the latter catalyst on P(L)LA (poly(L-lactide)) and used the so obtained macrocomplex in the aerobic alcohol oxidation carried out in toluene. The catalytic system was recyclable provided that n-pentane was used to precipitate the anchored catalyst.[3] In this presentation we show: (i) an improved recyclability of Uemura's catalyst from toluene solution, by exploiting the stereo-complex formation between the iso-tactic segments (i.e. P(L)LA and P(D)LA)) of PLA-based macroligands as shown in Scheme 1; (ii) the application of Uemura's catalyst in water using pyridine-end-capped PEG (poly(ethylene glycol)) as water-soluble macroligand. Scheme 1. Aerobic oxidation catalyzed by PLA- and PEG-based Pd(II) macrocomplexes. References [1] S. S. Stahl Angew. Chem. Int. Ed. 2004, 43, 3400. [2] T. Nishimura, T. Onoue, K. Ohe, S. Uemura J. Org. Chem. 1999, 64, 6750. [3] G. Giachi, M. Frediani, W. Oberhauser, E. Passaglia J. Polym. Sci. Part. A: Polym. Chem. 2012, in press (DOI:10.1002/pola.26039). (literal)

Prodotto di

• Institute of chemistry of organometallic compounds (ICCOM) (Istituto)
• Catalisi ed elettrocatalisi per la produzione sostenibile di energia e la trasformazione di risorse rinnovabili (PM.P03.001.001) (Modulo)

Autore CNR

• ELISA PASSAGLIA (Unità di personale interno)
• WERNER OBERHAUSER (Unità di personale interno)

Incoming links:

Prodotto

• Institute of chemistry of organometallic compounds (ICCOM) (Istituto)
• Catalisi ed elettrocatalisi per la produzione sostenibile di energia e la trasformazione di risorse rinnovabili (PM.P03.001.001) (Modulo)

Autore CNR di

• ELISA PASSAGLIA (Unità di personale interno)
• WERNER OBERHAUSER (Unità di personale interno)