Abstract
Triarylbismuth(V)-oxo and -hydroxo compounds react with organoboronic acids and esters in the presence of BF3 ·OEt2 to afford the corresponding bismuthonium salts. They also undergo dehydrative coupling with cyclic 1,3-dicarbonyl compounds, amides and sulfonamides to give stabilized bismuthonium ylides, bismuthane N -acylimides and bismuthane N -sulfonylimides, respectively. All reactions proceed efficiently under mild conditions.
Key words
bismuthane oxides - bismuthonium salts - bismuthonium ylides - bismuthane imides
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[5g
