Rhodium-catalyzed linear codimerization and cycloaddition of ketenes with alkynes

A novel rhodium-catalyzed linear codimerization of alkyl phenyl ketenes with internal alkynes to dienones and a novel synthesis of furans by an unusual cycloaddition of diaryl ketenes with internal alkynes have been developed. These reactions proceed smoothly with the same rhodium catalyst, RhCl(PPh...

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Published inMolecules (Basel, Switzerland) Vol. 15; no. 6; pp. 4189 - 4200
Main Authors Kondo, Teruyuki, Niimi, Masatsugu, Yoshida, Yuki, Wada, Kenji, Mitsudo, Take-aki, Kimura, Yu, Toshimitsu, Akio
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 09.06.2010
MDPI
Subjects
alkyne
Alkynes - chemistry
Catalysis
catalyst
codimerization
cycloaddition
Ethylenes - chemistry
ketene
Ketones - chemistry
Molecular Structure
rhodium
Rhodium - chemistry
Japan
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Summary:A novel rhodium-catalyzed linear codimerization of alkyl phenyl ketenes with internal alkynes to dienones and a novel synthesis of furans by an unusual cycloaddition of diaryl ketenes with internal alkynes have been developed. These reactions proceed smoothly with the same rhodium catalyst, RhCl(PPh(3))(3), and are highly dependent on the structure and reactivity of the starting ketenes.
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ISSN:1420-3049
1420-3049
DOI:10.3390/molecules15064189