Sodium Hydroxide → Baricitinib

HRID 1692977Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1692977
C(OC[N:9]1[C:13]2[N:14]=[CH:15][N:16]=[C:17]([C:18]3[CH:19]=[N:20][N:21]([C:23]4([CH2:32][C:33]#[N:34])[CH2:26][N:25]([S:27]([CH2:30][CH3:31])(=[O:29])=[O:28])[CH2:24]4)[CH:22]=3)[C:12]=2[CH:11]=[CH:10]1)(=O)C(C)(C)C.[OH-].[Na+]>CO.O1CCCC1>[N:14]1[C:13]2[NH:9][CH:10]=[CH:11][C:12]=2[C:17]([C:18]2[CH:19]=[N:20][N:21]([C:23]3([CH2:32][C:33]#[N:34])[CH2:24][N:25]([S:27]([CH2:30][CH3:31])(=[O:28])=[O:29])[CH2:26]3)[CH:22]=2)=[N:16][CH:15]=1

Komponenten

5

Edukt 2

HCID 14798Sodium HydroxideHCID 66824167(4-(1-(3-(Cyanomethyl)-1-(ethylsulfonyl)azetidin-3-yl)-1H-pyrazol-4-yl)-7H-pyrrolo(2,3-d)pyrimidin-7-yl)methyl pivalate

Produkt 1

HCID 44205240BaricitinibAusbeute 86 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A suspension of (4-(1-(3-(cyanomethyl)-1-(ethylsulfonyl)azetidin-3-yl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methyl pivalate (20, 1.0 g, 2.06 mmol) in methanol (MeOH, 5 mL) and tetrahydrofuran (THF, 20 mL) was treated with a 1 M aqueous sodium hydroxide solution (NaOH, 2.3 mL, 2.3 mmol, 1. 12 equiv) at room temperature, and the resulting reaction mixture was stirred at room temperature for 2-3 h. When HPLC showed that the reaction was deemed complete, the reaction mixture was quenched with water (10 mL) and a 1 N aqueous HCl solution (0.2 mL) to adjust pH to 7-7.5 at room temperature. The resulting mixture was stirred at room temperature for 30 min before the solids were collected by filtration. The solids were washed with a mixture of acetonitrile and water (2/3 by volume, 2×4 mL) and dried in vacuum at 40-45° for 24 h to afford crude 2-(3-(4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile (14, 658 mg, 765 mg theoretical, 86% yield) as off-white solids, which was found to be identical to the material prepared by Method A. For crude 14: 1H NMR (DMSO-d6, 300 MHz) δ 12.15 (s, 1H), 8.94 (s, 1H), 8.72 (s, 1H), 8.49 (s, 1H), 7.63 (d, 1H), 7.09 (d, 1H), 4.62 (d, 2H), 4.25 (d, 2H), 3.71 (s, 2H), 3.24 (q, 2H), 1.26 (t, 3H) ppm; C16H17N7O2S (MW, 371.42), LCMS (EI) m/e 372 (M++H).

Aufarbeitung

  1. customthe resulting reaction mixture
  2. customthe reaction mixture was quenched with water (10 mL)
  3. customat room temperature
  4. stirringThe resulting mixture was stirred at room temperature for 30 min before the solids
  5. filtrationwere collected by filtration
  6. washThe solids were washed with a mixture of acetonitrile and water (2/3 by volume, 2×4 mL)
  7. customdried in vacuum at 40-45° for 24 h

Quellen und Nachweise

ORD-Eintrag
ord-9e43c0d2b5114651900396d4b311aad1
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08158616B2

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