CINDECA   05422
CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
artículos
Título:
Supported heteropolyanions as solid counterions for the electrostatic immobilization of chiral copper complexes
Autor/es:
R. TORVISO; M. BLANCO; CACERES, C; J.M. FRAILE; J.A. MAYORAL
Revista:
JOURNAL OF CATALYSIS
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam-Holanda; Año: 2010 vol. 275 p. 70 - 70
ISSN:
0021-9517
Resumen:
Supported (PW12O40H3 ) is a suitable counterion to immobilize chiral azabis(oxazoline)–copper complexesthrough electrostatic interactions (ion pair formation). Catalytic results are good to excellent incyclopropanation reactions (up to 97% ee). Partial leaching during recycling when mono-exchangedspecies are present, favored by strong coordination of by-products, can be minimized by a proper solventchoice and by optimization of the recycling system, allowing the recovery and reuse of the catalyst atleast six times without loss of activity and enantioselectivities in the range of 82–96% ee for transcyclopropanes.
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