Pentanamide, N-[5-[[2-[2,4-bis(1,1-dimethylpropyl)phenoxy]-1-oxobutyl]amino]-2-chlorophenyl]-4,4-dimethyl-3-oxo- → HCID 4408645, compound

Participants

Reaction Steps

Io 25 ml of ethyl acetate, was dispersed 5.71 g (0.01 mol) of N-[2-chloro-5-{2-(2,4-di-tert-amylphenoxy)butanoylamino}phenyl]-α-pivaloylacetic acid amide, which is easily obtained by a condensation reaction of 2-chloro-5-{2-(2,4-di-tert-amylphenoxy)butanoylamino}aniline with pivaloylacetic acid ester; and then to this was added, little by little, 1.57 g (0.0055 mol) of 1,3-dibromo-5,5-dimethylhydantoin, on an ice bath. After stirring for 1 hour, water was added to the resultant reaction mixture, followed by separation of solutions, and then a solvent was removed by fraction, to obtain on oily product. This product was subjected to silica gel column chromatography (n-hexane/ethyl acetate=10/1 to 5/1), for purification. As an oily product, 0.05 g of Compound (1)-1 was obtained.

Provenance & Evidence