Diphenylphosphinic chloride → HCID 76741120, compound

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 (0.3 g, 0.52 mmol), was reacted with diisopropylethylamine (0.34 g, 2.6 mmol), diphenylphosphinic chloride (0.24 g, 1 mmol), then reacted with 6-aminonicotinonitrile (Oakwood) (0.09 g, 0.8°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 (5-cyano-pyridin-2-yl)-amide as a yellow solid (Yield 12 mg, 4%).

Provenance & Evidence