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RESEARCH ARTICLE
Contents Vol 60(1)

Erbium(iii) Chloride: a Very Active Acylation Catalyst

Renato Dalpozzo A C , Antonio De Nino A , Loredana Maiuolo B , Manuela Oliverio B , Antonio Procopio B C , Beatrice Russo B and Amedeo Tocci A
+ Author Affiliations
- Author Affiliations

A Dipartimento di Chimica, Università della Calabria, Ponte Bucci, 87030 Arcavacata di Rende, Italy.

B Dipartimento Farmaco-Biologico, Università degli Studi della Magna Graecia Complesso Ninì Barbieri, 88063 Roccelletta di Borgia, Italy.

C Corresponding authors. Email: dalpozzo@unical.it; procopio@unicz.it

Australian Journal of Chemistry 60(1) 75-79 https://doi.org/10.1071/CH06346
Submitted: 21 September 2006  Accepted: 26 October 2006   Published: 29 January 2007

Abstract

Erbium(iii) chloride is a powerful catalyst for the acylation of alcohols and phenols. The reaction works well for a large variety of simple and functionalized substrates by using different kinds of acidic anhydrides (Ac2O, (EtCO)2O, (PriCO)2O, (ButCO)2O, and (CF3CO)2), without isomerization of chiral centres. Moreover, the catalyst can be easily recycled and reused without significant loss of activity.


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A Oral mouse LD50 ErCl3 and NaCl from Sigma–Aldrich security sheets are 4417 and 4000 mg kg–1 respectively.

B The purity of the recovered ErCl3 was confirmed by comparison with the IR spectrum of the commercial product.