The invention discloses a chiral pentafluorophenyl
urea compound as well as a preparation method and application thereof, and relates to a preparation method and application of a
synthetic drug. The synthesized chiral product is used for synthesizing GABA analogue drugs such as (R)-pheibut, (R)-
baclofen and the like, an
effective method is provided for chiral
drug synthesis, and the application of the chiral product in
catalysis of asymmetric
addition reaction of dithiomalonate and nitroolefin in a water-containing medium is provided. When pentafluorophenylurea catalyzes an asymmetric
addition reaction of dithiomalonate and nitroolefin in a water-containing
solvent, due to a hydrophobic hydration effect, the
reaction rate and
stereoselectivity of pentafluorophenylurea are remarkably improved compared with those of pentafluorophenylurea in an
organic solvent, the dosage of a catalyst can be remarkably reduced, and green chemical requirements are met.