Triethylamine → Rac-5-{[(2r,3s,4r,5s)-3-(3-chloro-2fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-thiophene-2-carboxylic acid methyl ester

Participants

Reaction Steps

In a manner similar to the method described in Examples 144, 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 (0.3 g, 0.64 mmol) was reacted with oxalyl chloride (0.12 mL, 1.4 mmol), triethylamine (0.22 mL, 1.6 mmol), DMAP (5 mg), and 5-amino-2-thiophene-carboxylate (Princeton) (0.14 g, 0.96 mmol) to give rac-5-{[(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-carbonyl]-amino}-thiophene-2-carboxylic acid methyl ester as a yellow solid (0.11 g, 28%).

Provenance & Evidence