Phosgene → HCID 67095410, 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 (42.3 mg, 0.10 mmol) was reacted with phosgene solution (Aldrich, 20% in toluene, 0.12 mL, 0.12 mmol), in the presence of triethylamine (TEA, 30.0 mg, 0.30 mmol) in CH2Cl2 (2 mL) followed by reacting with 3-amino-benzoic acid methyl ester (Aldrich, 45.0 mg, 0.30 mmol) at rt for 30 min to give rac-3-{[(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}-benzoic acid methyl ester (38.1 mg, 62.9%) as a white amorphous which was used in the next step without further purification.

Provenance & Evidence