Trifluoroacetic acid → 1-[4-(2,2,2-Trifluoroethoxy)phenyl]piperazine

HRID 1723825

Reaktionsgleichung

Reaktionsgleichung von HRID 1723825
[F:1][C:2]([F:25])([F:24])[CH2:3][O:4][C:5]1[CH:10]=[CH:9][C:8]([N:11]2[CH2:16][CH2:15][N:14](C(OC(C)(C)C)=O)[CH2:13][CH2:12]2)=[CH:7][CH:6]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl>[F:25][C:2]([F:1])([F:24])[CH2:3][O:4][C:5]1[CH:6]=[CH:7][C:8]([N:11]2[CH2:16][CH2:15][NH:14][CH2:13][CH2:12]2)=[CH:9][CH:10]=1

Komponenten

4

Edukt 2

HCID 6422Trifluoroacetic acidHCID 68847847Tert-butyl 4-[4-(2,2,2-trifluoroethoxy)phenyl]piperazine-1-carboxylate

Produkt 1

HCID 435103441-[4-(2,2,2-Trifluoroethoxy)phenyl]piperazineAusbeute 91 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

Crude tert-butyl 4-[4-(2,2,2-trifluoroethoxy)phenyl]piperazine-1-carboxylate (32.47 g, approx 57 mmol) was dissolved in DCM (300 ml) and TFA (69 mL) was added. The reaction was stirred at room temperature overnight then evaporated to dryness, azeotroping with toluene. The residue was partitioned between DCM and saturated sodium bicarbonate solution. The organic phase was separated, dried (MgSO4), filtered and concentrated to yield 1-[4-(2,2,2-trifluoroethoxy)phenyl]piperazine as a solid (13.48 g, 91%)

Aufarbeitung

  1. customthen evaporated to dryness
  2. customazeotroping with toluene
  3. customThe residue was partitioned between DCM and saturated sodium bicarbonate solution
  4. customThe organic phase was separated
  5. dry with materialdried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-d4a7a68439a7489c929028d77cf10ea9
Quelldatensatz
uspto-grants-2009_02
Patentnummer
US07485644B2

Verknüpfte Notizen

Wird geladen…