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Sodium hydride → Tert-butyl 3-(((3-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)oxy)methyl)piperidine-1-carboxylate

HRID 1253545
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1253545
[Br:1][C:2]1[CH:3]=[N:4][N:5]2[CH:10]=[C:9]([C:11]3[CH:12]=[N:13][N:14]([CH3:16])[CH:15]=3)[CH:8]=[C:7]([OH:17])[C:6]=12.Br[CH2:19][CH:20]1[CH2:25][CH2:24][CH2:23][N:22]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:21]1.[H-].[Na+]>CN(C=O)C>[Br:1][C:2]1[CH:3]=[N:4][N:5]2[CH:10]=[C:9]([C:11]3[CH:12]=[N:13][N:14]([CH3:16])[CH:15]=3)[CH:8]=[C:7]([O:17][CH2:19][CH:20]3[CH2:25][CH2:24][CH2:23][N:22]([C:26]([O:28][C:29]([CH3:30])([CH3:32])[CH3:31])=[O:27])[CH2:21]3)[C:6]=12
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 24758Sodium hydrideHCID 211885311-Boc-3-bromomethylpiperidineHCID 673753833-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-ol

Produkt 1

HCID 58404902Tert-butyl 3-(((3-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)oxy)methyl)piperidine-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228
Dimethylformamide
Lösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

3-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-ol (60.0 mg, 0.205 mmol), tert-butyl 3-(bromomethyl)piperidine-1-carboxylate (114 mg, 0.410 mmol), and NaH (29.5 mg, 0.737 mmol) were suspended in DMF (2 ml), then heated to 60° C. After 2 h, the reaction mixture was quenched with 1 ml of saturated aqueous ammonium chloride, diluted in ethyl acetate, washed with saturated aqueous sodium bicarbonate and brine. The combined aqueous layers were extracted with ethyl acetate (1×30 mL), and the combined organic layers were dried over sodium sulfate, filtered and concentrated. The residue was purified by column chromatography on silica gel (methanol/ethyl acetate gradient) afford a yellow oil. The residue was purified by preparative HPLC Reverse phase (C-18), eluting with Acetonitrile/Water+0.05% TFA. The fractions containing product were combined and diluted in ethyl acetate, then washed with aqueous sodium bicarbonate and dried over sodium sulfate, filtered and concentrated to afford tert-butyl 3-({[3-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl]oxy}methyl)piperidine-1-carboxylate.

Aufarbeitung

  1. customthe reaction mixture was quenched with 1 ml of saturated aqueous ammonium chloride
  2. additiondiluted in ethyl acetate
  3. washwashed with saturated aqueous sodium bicarbonate and brine
  4. extractionThe combined aqueous layers were extracted with ethyl acetate (1×30 mL)
  5. dry with materialthe combined organic layers were dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified by column chromatography on silica gel (methanol/ethyl acetate gradient)
  9. customafford a yellow oil
  10. customThe residue was purified by preparative HPLC Reverse phase (C-18)
  11. washeluting with Acetonitrile/Water+0.05% TFA
  12. additionThe fractions containing product
  13. additiondiluted in ethyl acetate
  14. washwashed with aqueous sodium bicarbonate
  15. dry with materialdried over sodium sulfate
  16. filtrationfiltered
  17. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-32981d77af3846d793959015f118871f
Quelldatensatz
uspto-grants-2013_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08455477B2

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