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Water → rac-[(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-2-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-acetic acid tert-butyl ester

HRID 909051
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 909051
[Cl:1][C:2]1[C:3]([F:28])=[C:4]([CH:8]2[CH2:12][NH:11][CH:10]([CH2:13][C:14]([CH3:17])([CH3:16])[CH3:15])[C:9]2([C:20]2[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][C:21]=2[F:27])[C:18]#[N:19])[CH:5]=[CH:6][CH:7]=1.Br[CH2:30][C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32].C([O-])([O-])=O.[Cs+].[Cs+].O>CN(C)C=O>[C:34]([O:33][C:31](=[O:32])[CH2:30][N:11]1[CH2:12][C@H:8]([C:4]2[CH:5]=[CH:6][CH:7]=[C:2]([Cl:1])[C:3]=2[F:28])[C@:9]([C:20]2[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][C:21]=2[F:27])([C:18]#[N:19])[C@@H:10]1[CH2:13][C:14]([CH3:17])([CH3:16])[CH3:15])([CH3:37])([CH3:36])[CH3:35]
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Komponenten

6

Edukt 4

HCID 962WaterHCID 10796Cesium carbonateHCID 79177tert-Butyl bromoacetateHCID 67095302rac-(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-2-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile

Produkt 1

HCID 51355302rac-[(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-2-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-acetic acid tert-butyl ester
Ausbeute 66,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of rac-(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-2-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile (2.5 g, 5.9 mmol) in N,N-dimethylformamide (50 mL) was added tert-butyl bromoacetate (2.5 g, 12.8 mmol) and Cs2CO3 (5 g, 15.4 mmol). The reaction mixture was stirred at room temperature for 66 h. Water was added. The mixture was extracted with ethyl acetate. The organic layer was separated, and aqueous layer was extracted with ethyl acetate. The organic layers were combined, washed with water twice, dried over MgSO4, then concentrated. The residue was purified by chromatography (EtOAc:hexanes=1:10) to give rac-[(2S,3R,4S)-4-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-2-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-acetic acid tert-butyl ester as a white foam (2.1 g, 66%).

Aufarbeitung

  1. extractionThe mixture was extracted with ethyl acetate
  2. customThe organic layer was separated
  3. extractionaqueous layer was extracted with ethyl acetate
  4. washwashed with water twice
  5. dry with materialdried over MgSO4
  6. concentrationconcentrated
  7. customThe residue was purified by chromatography (EtOAc:hexanes=1:10)

Quellen und Nachweise

ORD-Eintrag
ord-2d7253efde074ec5a7bf022ed812a108
Quelldatensatz
uspto-grants-2011_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08017607B2

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