Diisopropylethylamine → HCID 77709006, compound

Participants

Reaction Steps

To 3-(4-cyano-phenyl)-2-(R,S)-cyclohexyl-propionic acid (5 g, 19.43 mmol) and (cyclohexylmethyl-amino)-acetic acid tert-butyl ester (4.42 g, 19.43 mmol) in dimethylformamide (50 ml) were added TOTU (7.01 g, 21.37 mmol) and diisopropylethyl amine (2.51 g, 19.43 mmol) at −15° C. The mixture was stirred for 1 hour and then allowed to warm to room temperature. After evaporation, the residue was treated with sodium bicarbonate solution and extracted with ethyl acetate. The organic layer was evaporated to yield 10 g of crude material which was used in the next step without further purification, MS m/z: 467.4 (M+H)+.

Provenance & Evidence