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Synthesis 2006(2): 305-308
DOI: 10.1055/s-2005-918521
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
Further Information
Received
18 July 2005
Publication Date:
21 December 2005 (online)
Publication History
Publication Date:
21 December 2005 (online)
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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.
Key words
acetals - carbohydrates - triarylphosphine-iodine complex - O-isopropylidene - acetonation
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References
Triphenylphosphine-iodine complex showed the same reactivity of the polymer bound/iodine complex towards all the tested sugars.