Pyridine → N-[5-[2-(3,5-Dimethoxyphenyl)ethyl]-1H-pyrazol-3-yl]-4-(dimethylaminomethyl)benzamide

HRID 16739

Reaktionsgleichung

Reaktionsgleichung von HRID 16739
C(Cl)(=O)C(Cl)=O.[CH3:7][N:8]([CH2:10][C:11]1[CH:19]=[CH:18][C:14]([C:15]([OH:17])=O)=[CH:13][CH:12]=1)[CH3:9].[NH2:20][C:21]1[N:25](C(OC(C)(C)C)=O)[N:24]=[C:23]([CH2:33][CH2:34][C:35]2[CH:40]=[C:39]([O:41][CH3:42])[CH:38]=[C:37]([O:43][CH3:44])[CH:36]=2)[CH:22]=1.N1C=CC=CC=1.C(O)(C(F)(F)F)=O>C(Cl)Cl.CN(C=O)C>[CH3:42][O:41][C:39]1[CH:40]=[C:35]([CH2:34][CH2:33][C:23]2[NH:24][N:25]=[C:21]([NH:20][C:15](=[O:17])[C:14]3[CH:13]=[CH:12][C:11]([CH2:10][N:8]([CH3:7])[CH3:9])=[CH:19][CH:18]=3)[CH:22]=2)[CH:36]=[C:37]([O:43][CH3:44])[CH:38]=1

Komponenten

8

Edukt 5

HCID 1049PyridineHCID 6422Trifluoroacetic acidHCID 65578Oxalyl chlorideHCID 8263194-[(Dimethylamino)methyl]benzoic acidHCID 57440371Tert-butyl 5-amino-3-[2-(3,5-dimethoxyphenyl)ethyl]pyrazole-1-carboxylate

Produkt 1

HCID 66589695N-[5-[2-(3,5-Dimethoxyphenyl)ethyl]-1H-pyrazol-3-yl]-4-(dimethylaminomethyl)benzamideAusbeute 28,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideKatalysatorHCID 6344DichloromethaneLösungsmittel3×

Versuchsvorschrift

Oxalyl chloride (61 μl, 0.69 mmol, 1.1 eq) was added dropwise to 4-(dimethylaminomethyl)benzoic acid (113 mg, 0.63 mmol, 1 eq) in DCM (2.5 ml) containing 1 drop of DMF. After stirring at ambient temperature for 1.5 h, a solution of tert-butyl 5-amino-3-[2-(3,5-dimethoxyphenyl)ethyl]pyrazole-1-carboxylate (196 mg, 0.56 mmol, 0.9 eq) and pyridine (137 μL, 1.69 mmol, 2.70 eq) in DCM (2 ml) was added to the reaction mixture and stirring was continued at ambient temperature for a further 2 h. A solution of TFA (384 μL, 5.16 mmol, 8.25 eq) in DCM (3.5 ml) was then added and stirring was continued at ambient temperature for 18 h. The reaction mixture was concentrated and the crude product was purified by reverse-phase prep. HPLC (basic) using a gradient of acetonitrile in water containing 1% ammonium hydroxide solution. The clean fractions were taken and evaporated to afford the title compound as a colourless solid (65 mg, 25% yield).; 1H NMR (399.902 MHz, DMSO) δ 2.09 (6H, s), 2.81 (4H, s), 3.38 (2H, s), 3.65 (6H, s), 6.26-6.25 (1H, m), 6.35 (2H, d), 6.40 (1H, s), 7.31 (2H, d), 7.87 (2H, d), 10.51 (1H, br.s), 12.07 (1H, br.s). MS: m/z 409 (MH+)

Aufarbeitung

  1. stirringstirring
  2. waitwas continued at ambient temperature for a further 2 h
  3. stirringstirring
  4. waitwas continued at ambient temperature for 18 h
  5. concentrationThe reaction mixture was concentrated
  6. customthe crude product was purified by reverse-phase prep
  7. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-933a749d4f634e6c8e755cc56ddcc4bf
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07737149B2

Verknüpfte Notizen

Wird geladen…