Lithium Hydroxide → rac-3-[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-propionic acid

HRID 909097Notes

Reaction equation

HRID 909097 reaction equation
C([O:3][C:4](=[O:35])[CH2:5][CH2:6][N:7]1[CH2:11][C@@H:10]([CH2:12][C:13]([CH3:16])([CH3:15])[CH3:14])[C@@:9]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[CH:21][C:20]=2[F:26])([C:17]#[N:18])[C@H:8]1[C:27]1[CH:32]=[CH:31][CH:30]=[C:29]([Cl:33])[C:28]=1[F:34])C.[Li+].[OH-]>C1COCC1.O>[Cl:33][C:29]1[C:28]([F:34])=[C:27]([C@@H:8]2[C@:9]([C:19]3[CH:24]=[CH:23][C:22]([Cl:25])=[CH:21][C:20]=3[F:26])([C:17]#[N:18])[C@H:10]([CH2:12][C:13]([CH3:15])([CH3:16])[CH3:14])[CH2:11][N:7]2[CH2:6][CH2:5][C:4]([OH:35])=[O:3])[CH:32]=[CH:31][CH:30]=1

Participants

5

Reactant 2

HCID 3939Lithium HydroxideHCID 67095542rac-3-[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-propionic acid ethyl ester

Product 1

HCID 51357804rac-3-[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-propionic acidYield 100%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a mixture of rac-3-[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-propionic acid ethyl ester (12.3 mg, 0.0235 mmol) in THF (2 mL) was added a solution of LiOH (Aldrich, 6.7 mg, 0.16 mmol) in water (1 mL) and the reaction mixture was stirred at rt for 22 hrs. The reaction mixture was partly concentrated and quenched with 1 N HCl (pH 6-7), extracted with EtOAc, washed with water (2×), and saturated NaCl. The organic phase was separated, and dried over Na2SO4. The mixture was then concentrated 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)-pyrrolidin-1-yl]-propionic acid (11 mg, 100%). HRMS (ES+) m/z Calcd for C25H26Cl2F2N2O2+H [(M+H)+]: 495.1412; Found: 495.1413.

Workup

  1. concentrationThe reaction mixture was partly concentrated
  2. customquenched with 1 N HCl (pH 6-7)
  3. extractionextracted with EtOAc
  4. washwashed with water (2×), and saturated NaCl
  5. customThe organic phase was separated
  6. dry with materialdried over Na2SO4
  7. concentrationThe mixture was then concentrated

Sources & evidence

ORD record
ord-5adf8c1227e44547b74c721185b5340c
Source dataset
uspto-grants-2011_09
Patent number
US08017607B2

Reaction notes

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