Water → 2-[(4-{2-[Heptyl(4-nitrophenyl)amino]ethyl}-1,3-thiazol-2-yl)thio]-2-methylpropionic acid tert-butyl ester

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Reaction Conditions

Reaction Steps

2-({4-[2-(Heptylamino)ethyl]-1,3-thiazol-2-yl}thio)-2-methylpropionic acid tert-butyl ester (0.40 g) synthesized in Example 303-2 and 1-fluoro-4-nitrobenzene (0.14 g) were dissolved in N,N-dimethylformamide (10 mL), N,N-diisopropylethylamine (0.52 mL) was added thereto, and the mixture was stirred at 80° C. for 4 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel chromatography (elution solvent; hexane:ethyl acetate=7:3) to give the title compound (0.20 g) as a yellow oil.

Provenance & Evidence