Diisopropylethylamine → HCID 59249477, compound

Participants

Reaction Steps

To a stirred solution of rac (2R,3S,4R,5S)-3-(3-Chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carboxylic acid (581 mg, 1 mmol) in methylene chloride (10 mL), HATU (Aldrich, 500 mg, 1.3 mmol) was added followed by the addition of DIPEA (0.35 mL, 2.2 mmol) and piperidin-4-yl-acetic acid methyl ester (Oakwood, 205 mg, 1.3 mmol). The mixture was stirred at rt for 3 hrs. The reaction was quenched with addition of water. The mixture was extracted with methylene chloride (2×10 mL) and the extracts were dried with magnesium sulfate. The solvent was removed and the residue was purified on a ISCO machine (12 g column, eluent, 20% EtOAc/methylene chloride) to give a white solid. 586 mg.

Provenance & Evidence