Water → HCID 69430818, compound

HRID 1269737Notes

Reaction equation

HRID 1269737 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][O:12]1)[N:6]=[CH:5]2.[CH2:17]([N:24]1[CH2:29][CH2:28][NH:27][CH2:26][CH2:25]1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.CC(C)([O-])C.[Na+].O>C1(C)C=CC=CC=1.CC1C=CC=CC=1[P](C1C=CC=CC=1C)([Pd](Cl)(Cl)[P](C1=C(C)C=CC=C1)(C1C=CC=CC=1C)C1C=CC=CC=1C)C1C=CC=CC=1C>[CH2:17]([N:24]1[CH2:29][CH2:28][N:27]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[N:7]([CH:11]2[CH2:16][CH2:15][CH2:14][CH2:13][O:12]2)[N:6]=[CH:5]3)[CH2:26][CH2:25]1)[C:18]1[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=1

Participants

7

Reactant 4

HCID 962WaterHCID 759941-BenzylpiperazineHCID 23676156Sodium t-butoxideHCID 534338265-bromo-1-(oxan-2-yl)-1H-indazole

Product 1

HCID 69430818HCID 69430818, compoundYield 55%

Reagents, catalysts & solvents 2

HCID 178424406HCID 178424406, compoundCatalystHCID 1140TolueneSolvent

Conditions

Temperature
75 °C

Procedure

To a solution of the 5-bromo-1-tetrahydro-2H-pyran-2-yl-1H-indazole (250 mg, 0.889 mmol) obtained in Reference Example 5 in toluene (12 ml) were added 1-benzylpiperazine (0.24 ml, 1.35 mmol) and sodium tert-butoxide (128 mg, 1.33 mmol) at room temperature. After deaeration, bis(tri-o-tolylphosphine)-palladium(II) dichloride (70 mg, 0.0891 mmol) was added thereto and the resulting mixture was stirred at 75° C. for three and a half hours. Then, the reaction solution was poured into water and extracted with ethyl acetate. The organic layer was washed with a saturated aqueous sodium chloride solution and then dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure and the resulting residue was purified by a silica gel column chromatography (eluent: chloroform/ethyl acetate=5/2) to obtain 5-(4-benzyl-1-piperazinyl)-1-tetrahydro-2H-pyran-2-yl-1H-indazole (183 mg, 55%).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with a saturated aqueous sodium chloride solution
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationThe solvent was distilled off under reduced pressure
  5. customthe resulting residue was purified by a silica gel column chromatography (eluent: chloroform/ethyl acetate=5/2)

Sources & evidence

ORD record
ord-323bb652347d4d1c9fc88a7634e45af0
Source dataset
uspto-grants-2007_04
Patent number
US07199147B2

Reaction notes

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