Cycloadditions and nucleophilic attack on Z-2H-heptafluorobut-2-ene
作者:Richard D. Chambers、Andrew R. Edwards
DOI:10.1016/s0040-4020(98)00201-4
日期:1998.5
Chemistry of Z-2H-Heptafluorobut-2-ene 1 is surveyed; cycloaddition reactions occur with a variety of benzenoid compounds, in some cases leading directly to aromatics. Addition to cyclopentadiene, followed by eliminations of hydrogen fluoride and ethyne, lead to isomeric bistrifluoromethylcyclopentadienes. Nucleophilic reactions occur readily with oxygen, nitrogen and sulphur nucleophiles and aniline provides a quinoline synthesis. (C) 1998 Elsevier Science Ltd. All rights reserved.
Base-catalyzed stereoselective hydrophenoxylation and hydrothiolation of hexafluorobutyne
Novel base-catalyzed hydrophenoxylation and hydrothiolation of hexafluorobutyne are described. By using an easily available base, a variety of vinyl ethers as well as sulfides are prepared at room temperature through two-phase nucleophilic addition reaction. Mechanistic study revealed that the stereoselectivity of vinyl ethers might depend on frontier orbital interaction under kinetic control.