Acetic Acid → tert-butyl 4-(4-(4-(((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl) carbamoyl)-1-isopropyl-1H-pyrazolo[3,4-b]pyridin-6-yl)-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylate

HRID 1909270Notes

Reaction equation

HRID 1909270 reaction equation
[CH3:1][C:2]1[CH:7]=[C:6]([CH3:8])[NH:5][C:4](=[O:9])[C:3]=1[CH2:10][NH:11][C:12]([C:14]1[C:15]2[CH:28]=[N:27][N:26]([CH:29]([CH3:31])[CH3:30])[C:16]=2[N:17]=[C:18]([C:20]2[CH2:21][CH2:22][NH:23][CH2:24][CH:25]=2)[CH:19]=1)=[O:13].O=[C:33]1[CH2:38][CH2:37][N:36]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:35][CH2:34]1.C(O)(=O)C.[BH3-]C#N.[Na+]>CO>[CH3:1][C:2]1[CH:7]=[C:6]([CH3:8])[NH:5][C:4](=[O:9])[C:3]=1[CH2:10][NH:11][C:12]([C:14]1[CH:19]=[C:18]([C:20]2[CH2:21][CH2:22][N:23]([CH:33]3[CH2:38][CH2:37][N:36]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:35][CH2:34]3)[CH2:24][CH:25]=2)[N:17]=[C:16]2[N:26]([CH:29]([CH3:31])[CH3:30])[N:27]=[CH:28][C:15]=12)=[O:13]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 735900tert-Butyl 4-oxopiperidine-1-carboxylateHCID 5003444Sodium cyanoborohydrideHCID 68294868N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-1-isopropyl-6-(1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamide

Product 1

HCID 86703435tert-butyl 4-(4-(4-(((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl) carbamoyl)-1-isopropyl-1H-pyrazolo[3,4-b]pyridin-6-yl)-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylateYield 34.8%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a stirred solution of N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-1-isopropyl-6-(1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamide (1 g, 2.38 mmol) in methanol (15 mL) was added tert-butyl 4-oxopiperidine-1-carboxylate (1.18 g, 5.95 mmol) and acetic acid (0.17 g, 2.85 mmol) stirred it at room temperature for 2 days. Then NaBH3CN (0.224 g, 3.57 mmol) was added to it resulting reaction mixture was stirred at room temperature for 8 h. After completion of reaction, solvent was removed under reduced pressure and water was added to it. Extraction was carried out using ethyl acetate. The combined organic layers were washed with water, dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to afford crude material which was purified by column chromatography to give the desired compound (0.5 g, 34.5%).

Workup

  1. customresulting
  2. customreaction mixture
  3. stirringwas stirred at room temperature for 8 h
  4. customAfter completion of reaction, solvent
  5. customwas removed under reduced pressure and water
  6. additionwas added to it
  7. extractionExtraction
  8. washThe combined organic layers were washed with water
  9. dry with materialdried over anhydrous Na2SO4
  10. filtrationfiltered
  11. concentrationconcentrated under reduced pressure
  12. customto afford crude material which
  13. customwas purified by column chromatography

Sources & evidence

ORD record
ord-ea44c6848a034c2b8e0474a879e66537
Source dataset
uspto-grants-2013_12
Patent number
US08598167B1

Reaction notes

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