Water → HCID 178469152, compound

HRID 1854036Notes

Reaction equation

HRID 1854036 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]([C:14]([O:16][CH2:17][CH3:18])=[O:15])[C:5]2[CH:10]=[N:9][N:8]([CH:11]([CH3:13])[CH3:12])[C:6]=2[N:7]=1.[Cl:19]NC(=O)CCC(N)=O.O.C(OCC)(=O)C>CN(C=O)C>[Cl:19][C:3]1[C:2]([OH:1])=[N:7][C:6]2[N:8]([CH:11]([CH3:13])[CH3:12])[N:9]=[CH:10][C:5]=2[C:4]=1[C:14]([O:16][CH2:17][CH3:18])=[O:15]

Participants

6

Reactant 4

HCID 962WaterHCID 8857Ethyl AcetateHCID 15238416N-chlorosuccinamideHCID 178469345HCID 178469345, compound

Product 1

HCID 178469152HCID 178469152, compoundYield 69.9%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
60 °C

Procedure

To a stirred solution of ethyl 6-hydroxy-1-isopropyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (1.3 g, 5.2 mmol) in DMF (7 mL), N-chlorosuccinamide (1.11 g, 8.35 mmol) was added. The resulting reaction mixture was stirred at 60° C. for 1 h. On completion of reaction, water was added to it and extraction was carried out using ethyl acetate; the combined organic layers were washed with water, brine and dried over anhydrous Na2SO4. Solvent was removed under reduced pressure and residue was purified by silica gel column chromatography to obtain the desired intermediate (1 g, 69.9%).

Workup

  1. customThe resulting reaction mixture
  2. additionwas added to it and extraction
  3. washthe combined organic layers were washed with water, brine
  4. dry with materialdried over anhydrous Na2SO4
  5. customSolvent was removed under reduced pressure and residue
  6. customwas purified by silica gel column chromatography

Sources & evidence

ORD record
ord-01c4e3f4ca95493ea971cac4bbbc0b08
Source dataset
uspto-grants-2015_02
Patent number
US08962620B2

Reaction notes

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