Triethylamine → tert-Butyl [(3S)-3-(ethoxymethyl)-3-(4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentyl]carbamate

HRID 270610Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 270610
[C:1]([O:5][C:6]([NH:8][CH:9]1[CH2:13][CH2:12][C@:11]([CH2:17][O:18][CH2:19][CH3:20])([C:14]([OH:16])=O)[CH2:10]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.Cl.[F:23][C:24]([F:38])([F:37])[C:25]1[CH:30]=[CH:29][N:28]=[C:27]([N:31]2[CH2:36][CH2:35][NH:34][CH2:33][CH2:32]2)[CH:26]=1.C(N(CC)CC)C.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1>CN(C=O)C.C(Cl)Cl>[CH2:19]([O:18][CH2:17][C@:11]1([C:14]([N:34]2[CH2:35][CH2:36][N:31]([C:27]3[CH:26]=[C:25]([C:24]([F:38])([F:23])[F:37])[CH:30]=[CH:29][N:28]=3)[CH2:32][CH2:33]2)=[O:16])[CH2:12][CH2:13][CH:9]([NH:8][C:6](=[O:7])[O:5][C:1]([CH3:2])([CH3:3])[CH3:4])[CH2:10]1)[CH3:20]

Komponenten

7

Edukt 4

HCID 8471TriethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 685975881-[4-(Trifluoromethyl)pyridin-2-yl]piperazine dihydrochlorideHCID 68610943(1S)-3-[(tert-Butoxycarbonyl)amino]-1-(ethoxymethyl)cyclopentanecarboxylic acid

Produkt 1

HCID 86633372tert-Butyl [(3S)-3-(ethoxymethyl)-3-(4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentyl]carbamateAusbeute 40,7 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

(1S)-3-[(tert-Butoxycarbonyl)amino]-1-(ethoxymethyl)cyclopentanecarboxylic acid (429.4 mg, 1.494 mmol), 1-[4-(trifluoromethyl)pyridin-2-yl]piperazine dihydrochloride (500.0 mg, 1.644 mmol), triethylamine (0.833 mL, 5.98 mmol) and O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (850.3 mg, 2.242 mol) (HBTU) were mixed in dry DMF (10.2 mL). The resulting brown solution was stirred at room temperature under N2 overnight. The reaction mixture was diluted with CH2Cl2 and washed with saturated Na2CO3. The aqueous layer was extracted with CH2Cl2 four times. The combined organic layers were dried (MgSO4), concentrated and purified by flash chromatography to provide the desired product (304.4 mg, 40%). MS calculated for C24H36F3N4O4: (M+H) 501.3; found 501.3.

Aufarbeitung

  1. washwashed with saturated Na2CO3
  2. extractionThe aqueous layer was extracted with CH2Cl2 four times
  3. dry with materialThe combined organic layers were dried (MgSO4)
  4. concentrationconcentrated
  5. custompurified by flash chromatography

Quellen und Nachweise

ORD-Eintrag
ord-a050d339d17c4f499b01ad98c6eb4af7
Quelldatensatz
uspto-grants-2008_11
Patentnummer
US07449467B2

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