Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes
Supported ( PW₁₂ O₄₀³⁻ ) is a suitable counterion to immobilize chiral azabis(oxazoline)–copper complexes through electrostatic interactions (ion pair formation). Catalytic results are good to excellent in cyclopropanation reactions (up to 97% ee). Partial leaching during recycling when mono-exchang...
Guardado en:
| Autores principales: | , , , , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2010
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/127813 |
| Aporte de: |
| id |
I19-R120-10915-127813 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Química Heteropolyacids Enantioselective catalysis Immobilized catalysts |
| spellingShingle |
Química Heteropolyacids Enantioselective catalysis Immobilized catalysts Torviso, M. Rosario Blanco, Mirta Noemí Cáceres, Carmen V. Fraile, José M. Mayoral, José A. Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes |
| topic_facet |
Química Heteropolyacids Enantioselective catalysis Immobilized catalysts |
| description |
Supported ( PW₁₂ O₄₀³⁻ ) is a suitable counterion to immobilize chiral azabis(oxazoline)–copper complexes through electrostatic interactions (ion pair formation). Catalytic results are good to excellent in cyclopropanation reactions (up to 97% ee). Partial leaching during recycling when mono-exchanged species are present, favored by strong coordination of by-products, can be minimized by a proper solvent choice and by optimization of the recycling system, allowing the recovery and reuse of the catalyst at least six times without loss of activity and enantioselectivities in the range of 82–96% ee for trans-cyclopropanes. |
| format |
Articulo Preprint |
| author |
Torviso, M. Rosario Blanco, Mirta Noemí Cáceres, Carmen V. Fraile, José M. Mayoral, José A. |
| author_facet |
Torviso, M. Rosario Blanco, Mirta Noemí Cáceres, Carmen V. Fraile, José M. Mayoral, José A. |
| author_sort |
Torviso, M. Rosario |
| title |
Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes |
| title_short |
Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes |
| title_full |
Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes |
| title_fullStr |
Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes |
| title_full_unstemmed |
Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes |
| title_sort |
supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes |
| publishDate |
2010 |
| url |
http://sedici.unlp.edu.ar/handle/10915/127813 |
| work_keys_str_mv |
AT torvisomrosario supportedheteropolyanionsassolidcounterionsfortheelectrostaticimmobilizationofchiralcoppercomplexes AT blancomirtanoemi supportedheteropolyanionsassolidcounterionsfortheelectrostaticimmobilizationofchiralcoppercomplexes AT cacerescarmenv supportedheteropolyanionsassolidcounterionsfortheelectrostaticimmobilizationofchiralcoppercomplexes AT frailejosem supportedheteropolyanionsassolidcounterionsfortheelectrostaticimmobilizationofchiralcoppercomplexes AT mayoraljosea supportedheteropolyanionsassolidcounterionsfortheelectrostaticimmobilizationofchiralcoppercomplexes |
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Repositorios |
| _version_ |
1764820452416421888 |