ω-Bromoalkapolyenylmethyl ketones-I. Reaction of 5-bromo-3-penten-2-one with triphenylphosphine

J. Font, P. De March

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

Abstract

The reaction of (E)-5-bromo-3-penten-2-one with triphenylphosphine affords a 3:1 mixture of two protomeric phosphonium salts 4-oxo 2 pentenyltriphenylphosphonium bromide and 4-oxo-1-pentenyltriphenyl-phosphonium bromide, characterized by the 13C NMR spectrum of the mixture. However, the common phosphorane of these salts gives two condensation products with benzaldehyde, corresponding to α- and γ-condensation respectively. © 1981.
Original languageEnglish
Pages (from-to)2391-2396
JournalTetrahedron
Volume37
Issue number13
DOIs
Publication statusPublished - 1 Jan 1981

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