The rates of monometallation of alkylphenylacetylenes

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Abstract

Alkylphenylacetylenes, C6H5CCCH2R, have been metallated at the propargylic positions with an excess of n-butyllithium in diethyl ether at 0°C. Mono- and di-silyl derivatives have been isolated by quenching the metallation mixtures with Me3SiCl at different times. Pseudo-first order rate constants have been calculated for the monometallation from the rate of formation of the silylated products. A Taft correlation gives ρ* = 1.8.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Organometallic Chemistry
Volume127
Issue number1
DOIs
StatePublished - 22 Feb 1977

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