Potassium Carbonate → HCID 10453356, compound

HRID 609909Notes

Reaction equation

HRID 609909 reaction equation
[F:1][C:2]1[CH:16]=[CH:15][C:5]2[C:6]([CH:9]3[CH2:14][CH2:13][NH:12][CH2:11][CH2:10]3)=[N:7][O:8][C:4]=2[CH:3]=1.C([O-])([O-])=O.[K+].[K+].Br[CH2:24][CH2:25][CH2:26][O:27][C:28]1[CH:33]=[CH:32][C:31]([C:34](=[O:36])[CH3:35])=[CH:30][CH:29]=1>C(#N)C>[F:1][C:2]1[CH:16]=[CH:15][C:5]2[C:6]([CH:9]3[CH2:10][CH2:11][N:12]([CH2:24][CH2:25][CH2:26][O:27][C:28]4[CH:33]=[CH:32][C:31]([C:34](=[O:36])[CH3:35])=[CH:30][CH:29]=4)[CH2:13][CH2:14]3)=[N:7][O:8][C:4]=2[CH:3]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 8494213-(4-Piperidyl)-6-fluoro-1,2-benzisoxazoleHCID 10061000HCID 10061000, compound

Product 1

HCID 10453356HCID 10453356, compoundYield 48%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole (3.27 g, 14.8 mmol), K2CO3 (3 g), 1-[4-(3-bromopropoxy)phenyl]ethanone (4.5 g, 17.5 mmol) in acetonitrile (60 ml) was heated at reflux for 4 hours. The solvent was removed. The residue was dissolved in dichloromethane (300 ml) and washed with water and brine, then dried over MgSO4. The crude product from the evaporated solution was purified by flash chromatography (SiO2, 60 g; eluted with 1% methanol in dichloromethane, 1 liter). The purest fractions were combined and gave 2.8 g, 48% of 1-[4-[3-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]propoxy)phenyl]ethanone, m.p.=111-112° C.

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 4 hours
  3. customThe solvent was removed
  4. dissolutionThe residue was dissolved in dichloromethane (300 ml)
  5. washwashed with water and brine
  6. dry with materialdried over MgSO4
  7. customThe crude product from the evaporated solution was purified by flash chromatography (SiO2, 60 g; eluted with 1% methanol in dichloromethane, 1 liter)

Sources & evidence

ORD record
ord-e09a80e8b52446b996c6a704b139d0c7
Source dataset
uspto-grants-1999_12
Patent number
US05998417

Reaction notes

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