Diphenylphosphinic chloride → rac-(2'S,3'R,4'S,5'R)-6-chloro-4'-(3-chloro-2-fluoro-phenyl)-2'-(2,2-dimethyl-propyl)-2-oxo-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-5'-carboxylic acid (3-methoxy-pyridin-4-yl)-amide

Participants

Reaction Steps

In a manner similar to the method described in Example 5, rac-(2′S,3′R,4′S,5′R)-6-chloro-4′-(3-chloro-2-fluoro-phenyl)-2′-(2,2-dimethyl-propyl)-2-oxo-1,2-dihydro-spiro[indole-3,3′-pyrrolidine]-5′-carboxylic acid trifluoroacetic acid prepared in Example 4 (0.26 g, 0.45 mmol), was reacted with diisopropylethylamine (0.29 g, 2.2 mmol), diphenylphosphinic chloride (0.21 g, 0.9 mmol), then reacted with 4-amino-3-methoxypyridine (Tyger) (0.08 g, 0.67 mmol) to give rac-(2′S,3′R,4′S,5′R)-6-chloro-4′-(3-chloro-2-fluoro-phenyl)-2′-(2,2-dimethyl-propyl)-2-oxo-1,2-dihydro-spiro[indole-3,3′-pyrrolidine]-5′-carboxylic acid (3-methoxy-pyridin-4-yl)-amide as a light yellow solid (Yield 0.11 g, 41%).

Provenance & Evidence