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Synlett 2009(3): 377-383
DOI: 10.1055/s-0028-1087555
DOI: 10.1055/s-0028-1087555
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Thieme Chemistry Journal Awardees- Where are They Now? Intermolecular Cross-Acyloin Reactions by Fluoride-Promoted Additions of O-Silyl Thiazolium Carbinols
Further Information
Received
3 October 2008
Publication Date:
21 January 2009 (online)
Publication History
Publication Date:
21 January 2009 (online)
Abstract
The addition of acyl anion equivalents to aliphatic aldehydes (crossed-acyloin reaction) has been developed. Cesium fluoride with isopropanol as solvent promotes the addition of O-silyl thiazolium carbinols to various aliphatic aldehydes in moderate to good yields. These reactions represent a general procedure for the selective coupling of aliphatic aldehydes by an acyl anion reaction which have been problematic until now.
Key words
acyloin reaction - carbinols - cesium fluoride - acyl anions - thiazolium
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References and Notes
The use of aldehydes with benzoyl and triisopropylsiloxy functionalities was incompatible with this sequence.
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51The ¹³C NMR and IR spectra were not obtained due to decomposition of product upon purification.