Hydrochloric Acid → HCID 86718586, compound

HRID 1480625Notes

Reaction equation

HRID 1480625 reaction equation
C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].[C:15]([C:19]1[CH:20]=[C:21]([C:28]2[CH:29]=[N:30][C:31]([C:34]([F:37])([F:36])[F:35])=[CH:32][CH:33]=2)[C:22]([OH:27])=[C:23]([CH:26]=1)[CH:24]=O)([CH3:18])([CH3:17])[CH3:16].[C:38]([N:41]1[CH2:46][CH2:45][NH:44][CH2:43][CH2:42]1)(=[O:40])[CH3:39].C(O)C.[ClH:50]>O1CCCC1>[ClH:50].[C:15]([C:19]1[CH:20]=[C:21]([C:28]2[CH:29]=[N:30][C:31]([C:34]([F:37])([F:35])[F:36])=[CH:32][CH:33]=2)[C:22]([OH:27])=[C:23]([CH:26]=1)[CH2:24][N:44]1[CH2:45][CH2:46][N:41]([C:38](=[O:40])[CH3:39])[CH2:42][CH2:43]1)([CH3:18])([CH3:16])[CH3:17]

Participants

7

Reactant 5

HCID 313Hydrochloric AcidHCID 702EthanolHCID 837951-AcetylpiperazineHCID 5049666Sodium triacetoxyborohydrideHCID 86718581HCID 86718581, compound

Product 1

HCID 86718586HCID 86718586, compoundYield 61%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Sodium triacetoxyborohydride (0.41 g, 2.0 mmol) was added to a solution of 5-(tert-butyl)-2-hydroxy-3-(6-(trifluoromethyl)pyridin-3-yl)benzaldehyde (0.35 g, 1.1 mmol) and 1-acetylpiperazine (0.24 mL, 1.8 mmol) in tetrahydrofuran (10 mL). The reaction mixture was stirred at room temperature under nitrogen for 16 hours. The reaction mixture was partitioned between ethyl acetate (25 mL) and saturated aqueous sodium bicarbonate solution (25 mL). The organic phase was dried with sodium sulfate, filtered and concentrated under reduced pressure to give a yellow syrup. The product was purified using flash chromatography on silica eluting with a solvent gradient of 0 to 100% ethyl acetate in hexanes to give a colorless oil which was dissolved in 1.25 M hydrochloric acid in ethanol (10 mL, 12.5 mmol). The mixture stood for 20 minutes and was then concentrated under reduced pressure to give a white solid which was triturated with diethyl ether (10 mL) and solid was filtered off to afford 1-(4-(5-(tert-butyl)-2-hydroxy-3-(6-(trifluoromethyl)pyridin-3-yl)benzyl)piperazin-1-yl)ethanone hydrochloride (0.32 g, 61% yield) as a white solid.

Workup

  1. customThe reaction mixture was partitioned between ethyl acetate (25 mL) and saturated aqueous sodium bicarbonate solution (25 mL)
  2. dry with materialThe organic phase was dried with sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customto give a yellow syrup
  6. customThe product was purified
  7. customto give a colorless oil which
  8. waitThe mixture stood for 20 minutes
  9. concentrationwas then concentrated under reduced pressure
  10. customto give a white solid which
  11. customwas triturated with diethyl ether (10 mL) and solid
  12. filtrationwas filtered off

Sources & evidence

ORD record
ord-019318a17d48407eb9398d14bf860ce4
Source dataset
uspto-grants-2016_08
Patent number
US09409893B2

Reaction notes

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