The Question of Electrophilic vs Nucleophilic Addition of Cyclic beta-Dicarbonyl Phenyliodonium Ylides: Electrophilic Cycloaddition of Diphenylketene

 
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2012 (EN)
The Question of Electrophilic vs Nucleophilic Addition of Cyclic beta-Dicarbonyl Phenyliodonium Ylides: Electrophilic Cycloaddition of Diphenylketene (EN)

Antos, A. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Antos, A. (EN)

The reaction of beta-dicarbonyl phenyliodonium ylides with diphenylketene at room temperature affords mixtures of lactone and aurone derivatives. The initial electrophilic attack of the iodonium ylide on the C-beta position of the diphenylketene, followed by cyclization of the zwitterionic species, and subsequent ejection of iodobenzene, affords the lactone and aurone cycloadducts. Treatment of beta-dicarbonyl iodonium ylides with acyl chlorides yields alpha-chloroenones with good to excellent yields. (EN)

c-h insertion (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Journal of Organic Chemistry (EN)

English

2012

<Go to ISI>://000311926100052

American Chemical Society (EN)



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