Toluene → 3(S)-[(3-chloro-4-cyanophenyl)-(3-chloro-4-fluorophenyl)amino]pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 1966032Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1966032
C1(C)C=CC=CC=1.[C:8]([O:12][C:13]([N:15]1[CH2:19][CH2:18][C@H:17]([NH:20][C:21]2[CH:26]=[CH:25][C:24]([F:27])=[C:23]([Cl:28])[CH:22]=2)[CH2:16]1)=[O:14])([CH3:11])([CH3:10])[CH3:9].[Cl:29][C:30]1[CH:37]=[C:36](F)[CH:35]=[CH:34][C:31]=1[C:32]#[N:33].C[Si]([N-][Si](C)(C)C)(C)C.[Na+]>C(OCC)C.O.O1CCCC1>[C:8]([O:12][C:13]([N:15]1[CH2:19][CH2:18][C@H:17]([N:20]([C:36]2[CH:35]=[CH:34][C:31]([C:32]#[N:33])=[C:30]([Cl:29])[CH:37]=2)[C:21]2[CH:26]=[CH:25][C:24]([F:27])=[C:23]([Cl:28])[CH:22]=2)[CH2:16]1)=[O:14])([CH3:11])([CH3:9])[CH3:10]

Komponenten

8

Edukt 4

HCID 1140TolueneHCID 1090002-Chloro-4-fluorobenzonitrileHCID 2724254Sodium bis(trimethylsilyl)amideHCID 666570713(S)-(3-chloro-4-fluorophenylamino)pyrrolidine-1-carboxylic acid tert-butyl ester

Produkt 1

HCID 666572273(S)-[(3-chloro-4-cyanophenyl)-(3-chloro-4-fluorophenyl)amino]pyrrolidine-1-carboxylic acid tert-butyl esterAusbeute 77,7 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 3283Diethyl EtherLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To an anhydrous toluene solution containing 3(S)-[(3-chloro-4-fluorophenyl)amino]pyrrolidine-1-carboxylic acid tert-butyl ester (0.50 g, 1.6 mmol) and 2-chloro-4-fluorobenzonitrile (0.30 g, 1.9 mmol) was added a 1.45 ml tetrahydrofuran solution containing sodium bis(trimethylsilyl)amide (1.1 M) using a syringe. The mixture was heated under reflux under a nitrogen atmosphere for 8 hours and cooled to room temperature. Water was added to the reaction solution, and extraction with diethyl ether was conducted. After drying over sodium sulfate and concentration under reduced pressure, the residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=4:1). The purified product was concentrated to dryness under reduced pressure to thereby obtain 0.56 g of white amorphous solid 3(S)-[(3-chloro-4-cyanophenyl)-(3-chloro-4-fluorophenyl)amino]pyrrolidine-1-carboxylic acid tert-butyl ester.

Aufarbeitung

  1. temperatureThe mixture was heated
  2. temperatureunder reflux under a nitrogen atmosphere for 8 hours
  3. dry with materialAfter drying over sodium sulfate and concentration under reduced pressure
  4. customthe residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=4:1)
  5. concentrationThe purified product was concentrated to dryness under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-cecda900f7df445d9c3b81b6b7fbf6c1
Quelldatensatz
uspto-grants-2013_04
Patentnummer
US08420623B2

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