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

HRID 1261702Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1261702
[C:1]([O:5][C:6]([NH:8][C@@H:9]1[CH2:13][CH2:12][C@:11]([C@H:17]2[CH2:21][CH2:20][O:19][CH2:18]2)([C:14]([OH:16])=O)[CH2:10]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.Cl.[F:24][C:25]([F:39])([F:38])[C:26]1[CH:31]=[CH:30][N:29]=[C:28]([N:32]2[CH2:37][CH2:36][NH:35][CH2:34][CH2:33]2)[CH:27]=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>[O:19]1[CH2:20][CH2:21][C@H:17]([C@:11]2([C:14]([N:35]3[CH2:36][CH2:37][N:32]([C:28]4[CH:27]=[C:26]([C:25]([F:39])([F:24])[F:38])[CH:31]=[CH:30][N:29]=4)[CH2:33][CH2:34]3)=[O:16])[CH2:12][CH2:13][C@@H:9]([NH:8][C:6](=[O:7])[O:5][C:1]([CH3:2])([CH3:3])[CH3:4])[CH2:10]2)[CH2:18]1

Komponenten

7

Edukt 4

HCID 8471TriethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 68596411(1S,3R)-3-[(tert-Butoxycarbonyl)amino]-1-[(3R)-tetrahydrofuran-3-yl]cyclopentanecarboxylic AcidHCID 685975881-[4-(Trifluoromethyl)pyridin-2-yl]piperazine dihydrochloride

Produkt 1

HCID 86641538tert-Butyl [(1R,3S)-3-[(3R)-Tetrahydrofuran-3-yl]-3-(4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentyl]carbamateAusbeute 45,1 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

(1S,3R)-3-[(tert-Butoxycarbonyl)amino]-1-[(3R)-tetrahydrofuran-3-yl]cyclopentanecarboxylic acid (350.0 mg, 1.169 mmol), 1-[4-(trifluoromethyl)pyridin-2-yl]piperazine dihydrochloride (391.1 mg, 1.286 mmol), triethylamine (0.652 mL, 4.68 mmol) and O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (665.1 mg, 1.754 mol) (HBTU) were mixed in dry DMF (8.0 mL). After being stirred at room temperature 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 (Combi-flash system, 0-50% EtOAc in hexanes, gradient elution, 40 gram column) to provide the desired product (270 mg, 45%). MS calculated for C25H36F3N4O4 (M+H) 513.3; found 513.3.

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 (Combi-flash system, 0-50% EtOAc in hexanes, gradient elution, 40 gram column)

Quellen und Nachweise

ORD-Eintrag
ord-c4373d8174a54b2abc449c2d67761bc0
Quelldatensatz
uspto-grants-2013_06
Patentnummer
US08470827B2

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