Trifluoroacetic acid → HCID 68276432, Verbindung

HRID 334423Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 334423
FC(F)(F)C(O)=O.[F:8][C:9]1([F:16])[CH2:14][CH2:13][C:12](=O)[CH2:11][CH2:10]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.C[N+](C)(C)C.[NH2:35][C:36]1[CH:48]=[C:47]([N:49]2[CH2:54][CH2:53][N:52]([CH3:55])[CH2:51][CH2:50]2)[CH:46]=[CH:45][C:37]=1[C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39]>ClCCl.C(OCC)(=O)C>[F:8][C:9]1([F:16])[CH2:14][CH2:13][CH:12]([NH:35][C:36]2[CH:48]=[C:47]([N:49]3[CH2:54][CH2:53][N:52]([CH3:55])[CH2:51][CH2:50]3)[CH:46]=[CH:45][C:37]=2[C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39])[CH2:11][CH2:10]1

Komponenten

7

Edukt 4

HCID 6422Trifluoroacetic acidHCID 13696215Tetramethylammonium Triacetoxyborohydride (>90%)HCID 157890924,4-DifluorocyclohexanoneHCID 667359202-Amino-4-(4-methylpiperazin-1-yl) benzoic acid tertbutyl ester

Produkt 1

HCID 68276432HCID 68276432, VerbindungAusbeute 102,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6344DichloromethaneLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

1.045 ml (13.57 mmol) of trifluoroacetic acid, 1 g (7.46 mmol) of 4,4-difluorocyclohexanone and 2.158 g (8.20 mmol) of tetramethylammonium triacetoxyborohydride are added to 1.521 g (5.22 mmol) of tert-butyl 2-amino-4-(4-methylpiperazin-1-yl)benzoate dissolved in 60 ml of dichloromethane. The reaction is left under stirring at room temperature for 24 hours. The solvent is evaporated and then the crude reaction product is redissolved in 30 ml of ethyl acetate. The solution is successively washed with 0.5 M HCl solution, 0.5 M soda solution and finally with saturated NaHCO3 solution. The organic phase is dried on sodium sulfate, filtered and concentrated to obtain 2.2 g of tert-butyl 2-(4,4-difluorocyclohexylamino)-4-(4-methylpiperazin-1-yl)benzoate in the form of a light brown gum (yield=72%).

Aufarbeitung

  1. waitThe reaction is left
  2. customThe solvent is evaporated
  3. customthe crude reaction product
  4. washThe solution is successively washed with 0.5 M HCl solution, 0.5 M soda solution and finally with saturated NaHCO3 solution
  5. customThe organic phase is dried on sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-5e4afa93d1ae490380ce34cb5b9fb56b
Quelldatensatz
uspto-grants-2014_11
Patentnummer
US08883821B2

Notizen zur Reaktion

Wird geladen…