A binary catalyst system based on tannic acid/NBu4X (X=Br, I) is presented as a highly efficient organocatalyst at very low catalyst loading for the coupling of carbon dioxide and functional oxiranes to afford organic carbonates in good yields. The presence of multiple polyphenol fragments within the tannic acid structure is considered to be beneficial for synergistic effects that lead to higher stabilization of the catalyst structure during catalysis. The observed turnover frequencies (TOFs) exceed 200h(-1) and are among the highest reported to date for organocatalysts in this area of CO2 conversion. This organocatalyst system presents a useful, readily available, inexpensive, and, above all, reactive alternative for most of the metal-based catalyst systems reported to date.

Highly Efficient Organocatalyzed Conversion of Oxiranes and CO2 into Organic Carbonates

Fiorani, Giulia;
2015-01-01

Abstract

A binary catalyst system based on tannic acid/NBu4X (X=Br, I) is presented as a highly efficient organocatalyst at very low catalyst loading for the coupling of carbon dioxide and functional oxiranes to afford organic carbonates in good yields. The presence of multiple polyphenol fragments within the tannic acid structure is considered to be beneficial for synergistic effects that lead to higher stabilization of the catalyst structure during catalysis. The observed turnover frequencies (TOFs) exceed 200h(-1) and are among the highest reported to date for organocatalysts in this area of CO2 conversion. This organocatalyst system presents a useful, readily available, inexpensive, and, above all, reactive alternative for most of the metal-based catalyst systems reported to date.
2015
8
File in questo prodotto:
File Dimensione Formato  
ChemSusChem 2015, 8, 3248-3254.pdf

non disponibili

Descrizione: ChemSusChem 2015, 8, 3248-3254
Tipologia: Versione dell'editore
Licenza: Accesso chiuso-personale
Dimensione 980.3 kB
Formato Adobe PDF
980.3 kB Adobe PDF   Visualizza/Apri

I documenti in ARCA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10278/3694392
Citazioni
  • ???jsp.display-item.citation.pmc??? 3
  • Scopus 72
  • ???jsp.display-item.citation.isi??? 77
social impact