Trifluoromethylated iodoisoxazoles have been synthesized by the reaction of trifluoroacetohydroximoyl
chloride, alkynes, and N-iodosuccinimide in a one-pot reaction under metal-free and
mild conditions. An array of iodoisoxazole compounds with a wide range of functionalities
was obtained in moderate to good yields. The iodine-substituted isoxazoles render
versatile reaction sites for subsequent conversion. Plausible pathways are proposed
based on the control experiments.
Key words
alkynes - cycloaddition - trifluoromethylated iodoisoxazoles - hydroximoyl chloride
- synthetic methods