Supported ionic liquids. New recyclable materials for the L-proline-catalyzed aldol reaction

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146 Citazioni (Scopus)

Abstract

New materials for l-proline recycling have been developed. These materials have been applied to the l-proline-catalyzed aldol reaction between acetone and several aldehydes. The l-proline has been supported on the surface of modified silica gels with a monolayer of covalently attached ionic liquid with or without additional adsorbed ionic liquid. Good yields and ee values, comparable with those obtained under homogeneous conditions, have been obtained especially with imidazolinium-modified and 4-methylpyridinium-modified silica gels. Moreover, these materials have been easily recovered by simple filtration and studies about their reuse have been carried out. These studies showed that these materials can be used at least up to seven times. Finally, in the case of imidazolinium-modified silica gel, investigations showed that this support can be regenerated giving again a recyclable material with high isolated yields and reproducible ee values up to 13 cycles.
Lingua originaleEnglish
pagine (da-a)82-92
Numero di pagine11
RivistaADVANCED SYNTHESIS & CATALYSIS
Volume348
Stato di pubblicazionePublished - 2006

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Ionic Liquids
Ionic liquids
Proline
Silica Gel
Silica gel
Acetone
Aldehydes
Recycling
Monolayers
3-hydroxybutanal

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

Cita questo

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title = "Supported ionic liquids. New recyclable materials for the L-proline-catalyzed aldol reaction",
abstract = "New materials for l-proline recycling have been developed. These materials have been applied to the l-proline-catalyzed aldol reaction between acetone and several aldehydes. The l-proline has been supported on the surface of modified silica gels with a monolayer of covalently attached ionic liquid with or without additional adsorbed ionic liquid. Good yields and ee values, comparable with those obtained under homogeneous conditions, have been obtained especially with imidazolinium-modified and 4-methylpyridinium-modified silica gels. Moreover, these materials have been easily recovered by simple filtration and studies about their reuse have been carried out. These studies showed that these materials can be used at least up to seven times. Finally, in the case of imidazolinium-modified silica gel, investigations showed that this support can be regenerated giving again a recyclable material with high isolated yields and reproducible ee values up to 13 cycles.",
author = "{Lo Meo}, {Paolo Maria Giuseppe} and Renato Noto and Serena Riela and Francesca D'Anna and Michelangelo Gruttadauria and Carmela Aprile",
year = "2006",
language = "English",
volume = "348",
pages = "82--92",
journal = "ADVANCED SYNTHESIS & CATALYSIS",
issn = "1615-4150",

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TY - JOUR

T1 - Supported ionic liquids. New recyclable materials for the L-proline-catalyzed aldol reaction

AU - Lo Meo, Paolo Maria Giuseppe

AU - Noto, Renato

AU - Riela, Serena

AU - D'Anna, Francesca

AU - Gruttadauria, Michelangelo

AU - Aprile, Carmela

PY - 2006

Y1 - 2006

N2 - New materials for l-proline recycling have been developed. These materials have been applied to the l-proline-catalyzed aldol reaction between acetone and several aldehydes. The l-proline has been supported on the surface of modified silica gels with a monolayer of covalently attached ionic liquid with or without additional adsorbed ionic liquid. Good yields and ee values, comparable with those obtained under homogeneous conditions, have been obtained especially with imidazolinium-modified and 4-methylpyridinium-modified silica gels. Moreover, these materials have been easily recovered by simple filtration and studies about their reuse have been carried out. These studies showed that these materials can be used at least up to seven times. Finally, in the case of imidazolinium-modified silica gel, investigations showed that this support can be regenerated giving again a recyclable material with high isolated yields and reproducible ee values up to 13 cycles.

AB - New materials for l-proline recycling have been developed. These materials have been applied to the l-proline-catalyzed aldol reaction between acetone and several aldehydes. The l-proline has been supported on the surface of modified silica gels with a monolayer of covalently attached ionic liquid with or without additional adsorbed ionic liquid. Good yields and ee values, comparable with those obtained under homogeneous conditions, have been obtained especially with imidazolinium-modified and 4-methylpyridinium-modified silica gels. Moreover, these materials have been easily recovered by simple filtration and studies about their reuse have been carried out. These studies showed that these materials can be used at least up to seven times. Finally, in the case of imidazolinium-modified silica gel, investigations showed that this support can be regenerated giving again a recyclable material with high isolated yields and reproducible ee values up to 13 cycles.

UR - http://hdl.handle.net/10447/31096

M3 - Article

VL - 348

SP - 82

EP - 92

JO - ADVANCED SYNTHESIS & CATALYSIS

JF - ADVANCED SYNTHESIS & CATALYSIS

SN - 1615-4150

ER -