Mild and efficient method for the cleavage of benzylidene acetals by using erbium (III) triflate

Antonio Procopio; Renato Dalpozzo; Antonio De Nino; Loredana Maiuolo; Monica Nardi; Giovanni Romeo

doi:10.1039/B511314H

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Organic & Biomolecular Chemistry

Issue 22, 2005

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Mild and efficient method for the cleavage of benzylidene acetals by using erbium (III) triflate

Antonio Procopio , Renato Dalpozzo , Antonio De Nino , Loredana Maiuolo , Monica Nardi and Giovanni Romeo

Org. Biomol. Chem., 2005, 3, 4129-4133

DOI: 10.1039/B511314H
Received 09 Aug 2005, Accepted 19 Sep 2005
First published on the web 17 Oct 2005

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Abstract
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Er(OTf)₃ is proposed as new efficient Lewis acid catalyst in a mild deprotection protocol of benzylidene derivatives. In a modified procedure, where acetic anhydride is used as the reaction solvent, the simultaneous cleavage of the benzylidene acetal and the peracetylation of the substrates is obtained in quantitative yields and very short reaction times.

Abstract from Methods in Organic Synthesis 2006

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Abstract from Catalysts & Catalysed Reactions 2006

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Antonio Procopio
Renato Dalpozzo
Antonio De Nino
Loredana Maiuolo
Monica Nardi
Giovanni Romeo

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Organic & Biomolecular Chemistry

Mild and efficient method for the cleavage of benzylidene acetals by using erbium (III) triflate

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