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Grup de Catálisi Homogènia i Síntesi Orgánica Estereoselectiva 2001 SGR 00316. Prof. Sergio Castillón Síntesis Orgánica. Departament de Química Análitica I Química Orgánica. Prof. Carmen Claver Organometál.lics i Catàlisi Homogénia OMICH. Departament de Química Física i Inorgànica.

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slide1

Grup de Catálisi Homogènia i

Síntesi Orgánica Estereoselectiva

2001 SGR 00316

Prof. Sergio Castillón

Síntesis Orgánica

Departament de Química Análitica I Química Orgánica

Prof. Carmen Claver

Organometál.lics i Catàlisi Homogénia

OMICH

Departament de Química Física i Inorgànica

slide2

Metallic nanoparticles as catalyst

-High activity and selectivity (large specific surface)

“Probing Catalysis on the Nanoscale”

Science & Technology, C&EN,September 27,2004

-Efficient catalysts for several proceses

Hydrogenation Hydrosilylation

Oxidation C-C coupling reactions

-Activity in reactions where other catalysts are not active

-Only one example in enantioselective catalyst

Chem. Eur. J., 1997, 3, 1200

TetrahedronLett. 1998, 39, 1941

slide3

Metallic nanoparticles stabilized by organic ligands

Stabilisation and reproducibility.

Control of nanoparticles.

Uniformity in particle size, composition and morphology.

Systematic modification of the ligands: Effect on the properties

of the nanoparticles.

Organometallic complexes as starting materials.

slide4

NANOCATALYST

  • Metal Nanoparticles Stabilized by Organic Ligands. Applications in Catalysis
  • Synthesis of nanoparticles of transition metals stabilized by organic ligands:
  • -Perfluorinated ligands.
  • Application in hydrogenation reaction.
  • -Chiral ligands with carbohydrate backbone.
  • Application C-C coupling reactions
slide5

1. Synthesis of nanoparticles of transition metals stabilized by organic ligands. Application in hydrogenation reaction

-Synthesis of pyridine derivative perfluorinated ligands

-Metal nanoparticles stabilization of different transition metals

-Application as catalyst for arene hydrogenation in supercritic CO2

slide6

Influence of Organic Ligands on the Stabilization Organometallic Palladium Nanoparticles.

E. Ramirez, S. Jansat, K. Philippot, P. Lecante, M. Gomez, A.Masdeu, B. Chaudret

J. Organomet. Chem. 2004, (submitted)

slide7

2. Metal nanoparticles stabilized by organic chiral ligands with carbohydrate backbone.

-Design and synthesis of new carbohydrate ligands

-Synthesis and characterization of metal nanoparticles

(Rh,Pd, Ru) with new chiral ligands

-Application in palladium catalyzed C-C bond reactions

and other catalytic processes.

slide8

Synthesis of palladium nanoparticles

L=

A case for Enantioselective Allylic Alkylation Catalyzed by Palladium Nanoparticles

S.Jansat,M. Gomez, K. Philippot, G.Muller, E. Guiu, C. Claver, S. Castillón, B. Chaudret

J. Am. Chem. Soc., 2004, 126, 1593

slide9

Catalysis. Reaction of allylic alkylation

-Homogeneous catalyst and nanocatalyst behave differently

-First example of kinetic resolution with nanocatalyst

J. Am. Chem. Soc., 2004, 126, 1593

slide10

Pd/L 1/0.1

R: 43 %

L=

X 100000

X 150000

slide11

Aurora Ruiz

Elena Fernández

Montse Diéguez

Oscar Pàmies

Yolanda Díaz

Asymmetric Catalysis

Dr. Carmen Claver

Dr. Sergio Castillón

Rosa Axet

Ester Guiu

Supercritic CO2

Dr. Anna M. Masdeu-Bultó

Dr. Nuria Ruiz

Marta Giménez

Clara Tortosa

Financial Support

I+D- MCyT - Spain

DGR- Generalitat Catalunya

Acción Integrada-Picasso HF 2003

PICS Project- NANOMETCAT 2003

Dr. Bruno Chaudret LCC

Dr. Karine Philippot LCC

Dr. Susanna Jansat LCC

Montse Gómez UB

Guillermo Muller UB

Isabelle Favier UB

slide12

Collaborations

PICS Project- NANOMETCAT 2003

Universitat de Barcelona (Prof.G. Muller, Dra. M. Gómez)

Universitat Autónoma de Barcelona (Prof. M. Moreno)

ICIQ (Prof. M. Pericás)

Université de Montpellier (Prof. M.Corriu)

Université de Rennes ( Prof. A. Roucoux)

Université de Strasbourg (Prof. M. Pfeiffer)

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