Synthesis 2006(2): 305-308  
DOI: 10.1055/s-2005-918521
PAPER
© Georg Thieme Verlag Stuttgart · New York

Triphenylphosphine Polymer-Bound/Iodine Complex: A Suitable Reagent for the Preparation of O-Isopropylidene Sugar Derivatives

Silvana Pedatella, Annalisa Guaragna, Daniele D’Alonzo, Mauro De Nisco, Giovanni Palumbo*
Università di Napoli Federico II, Dipartimento di Chimica Organica e Biochimica, Via Cynthia 4, 80126 Napoli, Italy
Fax: +39(081)674393; e-Mail: gipalumb@unina.it;
Further Information

Publication History

Received 18 July 2005
Publication Date:
21 December 2005 (online)

Abstract

O-Isopropylidene derivatives of sugars are readily prepared by using the Lewis acid and dehydrating agent triphenylphosphine polymer-bound/I2 complex. This new method is characterized by smooth, non-equilibrating reaction conditions and a very clean, simple work-up, making it particularly suitable for O-isopropyliden­ation of sugars under mild conditions and with low environmental impact.

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Triphenylphosphine-iodine complex showed the same reactivity of the polymer bound/iodine complex towards all the tested sugars.