Hydrochloric Acid → rac-4-{[(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'-carbonyl]amino}-2-fluoro-5-methoxy-benzoic acid

HRID 417372Notes

Reaction equation

HRID 417372 reaction equation
C[O:2][C:3](=[O:44])[C:4]1[CH:9]=[C:8]([O:10][CH3:11])[C:7]([NH:12][C:13]([C@@H:15]2[NH:19][C@@H:18]([CH2:20][C:21]([CH3:24])([CH3:23])[CH3:22])[C@:17]3([C:32]4[C:27](=[CH:28][C:29]([Cl:33])=[CH:30][CH:31]=4)[NH:26][C:25]3=[O:34])[C@H:16]2[C:35]2[CH:40]=[CH:39][CH:38]=[C:37]([Cl:41])[C:36]=2[F:42])=[O:14])=[CH:6][C:5]=1[F:43].Cl>C1COCC1.O.C(OCC)(=O)C>[Cl:33][C:29]1[CH:28]=[C:27]2[NH:26][C:25](=[O:34])[C@:17]3([C@@H:16]([C:35]4[CH:40]=[CH:39][CH:38]=[C:37]([Cl:41])[C:36]=4[F:42])[C@H:15]([C:13]([NH:12][C:7]4[C:8]([O:10][CH3:11])=[CH:9][C:4]([C:3]([OH:44])=[O:2])=[C:5]([F:43])[CH:6]=4)=[O:14])[NH:19][C@H:18]3[CH2:20][C:21]([CH3:23])([CH3:22])[CH3:24])[C:32]2=[CH:31][CH:30]=1

Participants

6

Reactant 2

HCID 313Hydrochloric AcidHCID 66625373rac-4-{[(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'-carbonyl]-amino}-2-fluoro-5-methoxy-benzoic acid methyl ester

Product 1

HCID 66624565rac-4-{[(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'-carbonyl]amino}-2-fluoro-5-methoxy-benzoic acidYield 93.2%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of rac-4-{[(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′-carbonyl]amino}-2-fluoro-5-methoxy-benzoic acid methyl ester (36 mg, 0.056 mmol) in THF (3 mL) was added LiOH monohydrate (11 mg, 0.26 mmol) in water (2 ml) and the reaction mixture was allowed to stir at rt overnight. The mixture was then treated with 1N HCl to slightly acidic, diluted with ethyl acetate (80 mL), washed with water (2×15 mL), dried with Na2SO4 and concentrated to give rac-4-{[(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′-carbonyl]amino}-2-fluoro-5-methoxy-benzoic acid as a white solid (33 mg, 92%). MS (ES+) m/z [(M+H)+]: 632

Workup

  1. washwashed with water (2×15 mL)
  2. dry with materialdried with Na2SO4
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-dda1d774e39e41669f74948d99736c89
Source dataset
uspto-grants-2012_01
Patent number
US08088815B2

Reaction notes

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