Sodium borohydride → N-((S)-1-(3-(3-chloro-4-cyano-2-methylphenyl)-1H-pyrazol-1-yl)propan-2-yl)-2-(1-hydroxyethyl)oxazole-4-carboxamide

HRID 872704Notes

Reaction equation

HRID 872704 reaction equation
[BH4-].[Na+].[C:3]([C:6]1[O:7][CH:8]=[C:9]([C:11]([NH:13][C@@H:14]([CH3:31])[CH2:15][N:16]2[CH:20]=[CH:19][C:18]([C:21]3[CH:26]=[CH:25][C:24]([C:27]#[N:28])=[C:23]([Cl:29])[C:22]=3[CH3:30])=[N:17]2)=[O:12])[N:10]=1)(=[O:5])[CH3:4]>C(O)C>[Cl:29][C:23]1[C:22]([CH3:30])=[C:21]([C:18]2[CH:19]=[CH:20][N:16]([CH2:15][C@@H:14]([NH:13][C:11]([C:9]3[N:10]=[C:6]([CH:3]([OH:5])[CH3:4])[O:7][CH:8]=3)=[O:12])[CH3:31])[N:17]=2)[CH:26]=[CH:25][C:24]=1[C:27]#[N:28]

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 70655932(S)-2-acetyl-N-(1-(3-(3-chloro-4-cyano-2-methylphenyl)-1H-pyrazol-1-yl)-propan-2-yl)oxazole-4-carboxamide

Product 1

HCID 70656868N-((S)-1-(3-(3-chloro-4-cyano-2-methylphenyl)-1H-pyrazol-1-yl)propan-2-yl)-2-(1-hydroxyethyl)oxazole-4-carboxamideYield 55.4%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Sodium borohydride (0.037 g, 0.971 mmol) was added into a flask and the atmosphere was replaced with nitrogen. Dry ethanol was added and the reaction mixture was cooled to 0° C. (S)-2-acetyl-N-(1-(3-(3-chloro-4-cyano-2-methylphenyl)-1H-pyrazol-1-yl)propan-2-yl)oxazole-4-carboxamide (0.2 g, 0.486 mmol) was added and the reaction mixture was warmed slowly to RT while stirring overnight. The crude product was cooled to 0° C., the pH was adjusted below 7 and the mixture was evaporated. 5% of DCM/MeOH was added and the crude product was washed with 1M NaHCO3, water and dried. The product was purified with Flash-chromatography. Yield 55.4%. 1H-NMR (400 MHz; CDCl3): δ 1.25 (d, 3H), 1.59 (d, 3H), 2.50 (s, 1H), 2.58 (s, 3H), 4.30 (dd, 1H), 4.42 (dd, 1H), 4.59 (m, 1H), 4.94 (m, 1H), 6.44 (d, 1H), 7.54 (m, 4H), 8.14 (s, 1H).

Workup

  1. additionwas added
  2. customthe mixture was evaporated
  3. addition5% of DCM/MeOH was added
  4. washthe crude product was washed with 1M NaHCO3, water
  5. customdried
  6. customThe product was purified with Flash-chromatography

Sources & evidence

ORD record
ord-6aedd66eb9764c42888f66f408491bfc
Source dataset
uspto-grants-2015_03
Patent number
US08975254B2

Reaction notes

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