title: One-step ethynylation of silyl enol ether with chlorosilylethyne.
abstract: [reaction: see text] In the presence of GaCl(3), silyl enol ethers are ethynylated at the alpha-carbon atom with chlorotrimethylsilylethyne. This reaction can provide alpha-ethynylated aryl ketones possessing acidic alpha-protons without isomerization to conjugated allenyl ketones.
authors.affiliation: Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan.
authors.forename: Mieko
authors.initials: M
authors.lastname: Arisawa
authors.forename: Ryo
authors.initials: R
authors.lastname: Amemiya
authors.forename: Masahiko
authors.initials: M
authors.lastname: Yamaguchi