Au(I)-Catalyzed Intramolecular Hydroamination of the Fluorinated <i>N′</i>-Aryl-<i>N</i>-Propargyl Amidines: Mild Conditions for the Synthesis of 2-Fluoroalkyl Imidazole Derivatives
The gold(I)-catalyzedsynthesis of 2-fluoroalkyl imidazolederivatives was developed. Catalyzed by gold(I), propargyl amidines underwent a 5-exo-dig cyclization to afford 2-fluoroalkyl-5-methyl imidazoles. Also, 2-fluoroalkyl imidazole-5-carbaldehydes were obtained in the presence of NIS. A mechanism investigation manifested the probable process and the carbonyl oxygen derived from O2.