Novel Perfluoroacyl Olefinations of Aldehydes Using β-Thio-Substituted Perfluoroalkyl Enol Ethers
作者:Mitsuhiro Yoshimatsu、Tomomi Sugimoto、Naoyuki Okada、Sayaka Kinoshita
DOI:10.1021/jo990282p
日期:1999.7.1
α-(Methylthio)- or α-(phenylthio)-substituted perfluoroacylolefinations of nonenolizable aldehydes using the β-lithio-β-thio-perfluoroalkyl enol ethers 1-4 stereoselectively proceeded to give (Z)-α,β-unsaturated perfluoroalkyl ketones 9a-e, 10a-c, 11a-c, and 12a. The α-(thio)-α,β-unsaturated trifluoromethyl ketones were easily converted to 3-(thio)-2-(trifluoromethyl)-1,3-butadienes 21a-c and 22a,b
使用 β-锂硫基-β-硫代-全氟烷基烯醇醚 1-4 立体选择性地进行非烯醇化醛的 α-(甲硫基)-或 α-(苯硫基)-取代的全氟酰基烯烃化反应,得到 (Z)-α,β-不饱和全氟烷基酮 9a -e、10a-c、11a-c 和 12a。α-(硫代)-α,β-不饱和三氟甲基酮很容易转化为 3-(硫代)-2-(三氟甲基)-1,3-丁二烯 21a-c 和 22a,b,产率中等至高 (41- 85%)。