3,3,3-Triphenylpropionic Acid → Ethyl 3-(2-{(3,3,3-triphenylpropanoyl)amino}acetylamino)propionate

Participants

Reaction Steps

To a solution of 1.52 g of ethyl 3-{(2-aminoacetyl)amino}propionate monohydrochloride and 2.18 g of 3,3,3-triphenylpropionic acid in 20 ml of chloroform, 1.46 g of 1-hydroxybenzotriazole monohydrate, 2.07 g of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide monohydrochloride and 2.0 ml of triethylamine were successively added at room temperature by the order stated, followed by 2 hours' stirring at the same temperature. The reaction liquid: was diluted with ethyl acetate and washed successively with aqueous saturated sodium bicarbonate solution, 1N-hydrochloric acid and water, and filtered through cerite. The filtrate was dried on anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resultant residue was purified by means of silica gel column chromatography (eluting solvent: hexane/ethyl acetate=4/1-chloroform/methanol=10/1) to provide 1.7 g of the title compound.

Provenance & Evidence