作者:Mikio Taniguchi、Shozo Kobayashi、Masako Nakagawa、Tohru Hino、Yoshito Kishi
DOI:10.1016/s0040-4039(00)85059-5
日期:1986.1
of terminal acetylenic ketones with NaI or LiBr gave almost exclusively E-β-iodo- or E-β-bromovinyl ketones in trifluoroacetic acid, while Z-β-iodo- or Z-β-bromovinyl ketones were the major products in acetic acid. Trimethylsilyl iodide and bromide reacted smoothly with acetylenic ketones at −78°C to give TMS-allenolates which were readily converted to β-iodo- and β-bromovinyl ketones, respectively
末端炔基酮与NaI或LiBr的反应几乎只在三氟乙酸中生成E-β-碘或E-β-溴乙烯基酮,而Z-β-碘或Z-β-溴乙烯基酮是乙酸的主要产物酸。三甲基甲硅烷基碘化物和溴化物在-78°C下与炔酮平稳反应,生成TMS-烯丙酸酯,它们分别容易地转化为β-碘和β-溴乙烯基酮。