Phosgene → HCID 51353870, compound

Participants

Reaction Steps

In a manner similar to the method described in Example 4, rac-(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-4-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile (126.9 mg, 0.30 mmol) was reacted with phosgene solution (Aldrich, 20% in toluene, 0.45 mL, 0.45 mmol), in the presence of triethylamine (TEA, 272.7 mg, 2.7 mmol) in CH2Cl2 (10 mL) followed by reacting with 4-aminomethyl-benzoic acid methyl ester (90.7 mg, 0.45 mmol) at rt for 30 min to give rac-4-({[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidine-1-carbonyl]amino}-methyl)-benzoic acid methyl ester (108.0 mg, 59.9%) as a white amorphous which was used in the next step without further purification.

Provenance & Evidence