Synthesis 2010(16): 2771-2775  
DOI: 10.1055/s-0030-1258148
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Bismuth Compounds in Organic Synthesis: Synthesis of Dioxanes, Dioxepines, and Dioxolanes Catalyzed by Bismuth(III) Triflate

Daniel M. Podgorski, Scott W. Krabbe, Long N. Le, Paul R. Sierszulski, Ram S. Mohan*
Laboratory for Environmentally Friendly Organic Synthesis, Department of Chemistry, Illinois Wesleyan University, Bloomington, IL 61701, USA
Fax: +1(309)5563864; e-Mail: rmohan@iwu.edu;
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Publikationsverlauf

Received 8 March 2010
Publikationsdatum:
02. Juli 2010 (online)

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Abstract

A simple method for the synthesis of 1,3-dioxolanes from carbonyl compounds has been developed using 1,2-bis(tri­methylsilyloxy)ethane in the presence of bismuth(III) triflate as a catalyst. The bismuth(III) triflate catalyzed synthesis of a range of dioxanes and dioxepines has also been developed. In these latter cases, the carbonyl compound is treated with a diol, and triethyl orthoformate is used as a water scavenger. All these methods avoid the use of a Dean-Stark trap.