The duality in the cycloadditions of F-dimethylketene with cyclopropenones. A novel synthesis of unsymmetrical triafulvenes

I. Agranat*, S. Cohen, E. Aharon-Shalom, E. D. Bergmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The reaction of F-dimethylketene 3 and diphenylcyclopropenone 7 in benzene solution affords 4-fluorocarbonyl-4-trifluoromethyl-1,2-diphenyltriafulvene 10. A mechanism of the cycloaddition through the intermediates F-methacryloyl fluoride 11 and the oxetane 12 is suggested. A contribution of the dipolar structure 10a is indicated. The cycloaddition of 3 and cyclopropenones constitutes a synthetic route to both symmetrical and unsymmetrical triafulvenes.

Original languageEnglish
Pages (from-to)1163-1165
Number of pages3
JournalTetrahedron
Volume31
Issue number9
DOIs
StatePublished - 1975

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