Potassium Carbonate → 1-Methyl-1H-pyrazole-4-sulfonic acid (2-{4-[2-(4-methoxymethyl-phenyl)-pyridin-3-yl]-piperazin-1-yl}-ethyl)-methyl-amide hydrochloride

HRID 553515Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 553515
[Cl:1][C:2]1[C:7]([N:8]2[CH2:13][CH2:12][N:11]([CH2:14][CH2:15][N:16]([CH3:26])[S:17]([C:20]3[CH:21]=[N:22][N:23]([CH3:25])[CH:24]=3)(=[O:19])=[O:18])[CH2:10][CH2:9]2)=[CH:6][CH:5]=[CH:4][N:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH3:33][O:34][CH2:35][CH2:36]OC.O>[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[ClH:1].[CH3:33][O:34][CH2:35][C:36]1[CH:2]=[CH:7][C:6]([C:2]2[C:7]([N:8]3[CH2:13][CH2:12][N:11]([CH2:14][CH2:15][N:16]([CH3:26])[S:17]([C:20]4[CH:21]=[N:22][N:23]([CH3:25])[CH:24]=4)(=[O:19])=[O:18])[CH2:10][CH2:9]3)=[CH:6][CH:5]=[CH:4][N:3]=2)=[CH:5][CH:4]=1

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 18180031Water 1,2-dimethoxyethaneHCID 866402101-Methyl-1H-pyrazole-4-sulfonic acid {2-[4-(2-chloro-pyridin-3-yl)-piperazin-1-yl]-ethyl}-methyl-amide

Produkt 1

HCID 673690991-Methyl-1H-pyrazole-4-sulfonic acid (2-{4-[2-(4-methoxymethyl-phenyl)-pyridin-3-yl]-piperazin-1-yl}-ethyl)-methyl-amide hydrochloride

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 11979704Tetrakis(triphenylphosphine)palladiumKatalysator

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

Dissolve 1-methyl-1H-pyrazole-4-sulfonic acid {2-[4-(2-chloro-pyridin-3-yl)-piperazin-1-yl]-ethyl}-methyl-amide (0.200 g, 0.501 mmol) in DME-H2O (6 mL; 3:1 v/v, previously degassed with nitrogen). Add 4-(methoxymethyl)boronic acid (0.125 g, 0.752 mmol), potassium carbonate (0.166 g, 1.203 mmol) and tetrakis(triphenylphosphine)-palladium (0.029 g, 0.025 mmol). Heat the reaction mixture at 80° C. for 8 hr. Cool to room temperature and concentrate to remove DME. Dilute with ethyl acetate and brine. Extract the aqueous layer with ethyl acetate. Combine the organic phases, dry over sodium sulfate, filter, and concentrate. Purify by silica gel chromatography eluting with dichloromethane:methanol 94:6 to 90:10 to afford the freebase of the title compound with minor impurities. Purify by SCX eluting sequentially with dichloromethane, dichloromethane:methanol 1:1, methanol, and 1N ammonia in methanol. Pass the pure free base through a silica gel plug eluting with dichloromethane:methanol 4:1 to afford the free base of the title compound.

Aufarbeitung

  1. custom3:1 v/v, previously degassed with nitrogen)
  2. temperatureCool to room temperature
  3. concentrationconcentrate
  4. customto remove DME
  5. additionDilute with ethyl acetate and brine
  6. extractionExtract the aqueous layer with ethyl acetate
  7. dry with materialdry over sodium sulfate
  8. filtrationfilter
  9. concentrationconcentrate
  10. customPurify by silica gel chromatography
  11. washeluting with dichloromethane:methanol 94:6 to 90:10

Quellen und Nachweise

ORD-Eintrag
ord-1d4ffc618b6e43b18c15f41783fc240a
Quelldatensatz
uspto-grants-2011_11
Patentnummer
US08048884B2

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