Potassium Iodide → 4-Acetyl-1-[3-(6-fluoro-1,2-benzisoxazol-3-yl)propyl]-4-phenylpiperidine hydrochloride

HRID 1462072Notes

Reaction equation

HRID 1462072 reaction equation
[C:1]([C:4]1([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH2:9][CH2:8][NH:7][CH2:6][CH2:5]1)(=[O:3])[CH3:2].[Cl:16][CH2:17][CH2:18][CH2:19][C:20]1[C:24]2[CH:25]=[CH:26][C:27]([F:29])=[CH:28][C:23]=2[O:22][N:21]=1.C(=O)([O-])[O-].[K+].[K+].[I-].[K+]>CN(C)C=O>[ClH:16].[C:1]([C:4]1([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH2:5][CH2:6][N:7]([CH2:17][CH2:18][CH2:19][C:20]2[C:24]3[CH:25]=[CH:26][C:27]([F:29])=[CH:28][C:23]=3[O:22][N:21]=2)[CH2:8][CH2:9]1)(=[O:3])[CH3:2]

Participants

6

Reactant 4

HCID 4875Potassium IodideHCID 11430Potassium CarbonateHCID 1015214-Acetyl-4-phenylpiperidineHCID 109108803-(3-Chloropropyl)-6-fluorobenzo[d]isoxazole

Product 1

HCID 133198744-Acetyl-1-[3-(6-fluoro-1,2-benzisoxazol-3-yl)propyl]-4-phenylpiperidine hydrochlorideYield 66.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To 35 ml of dimethylformamide was added 4.06 g of 4-acetyl-4-phenylpiperidine, 5.0 g of 3-(3-chloropropyl)-6-fluoro-1,2-benzisoxazole, 10 g of milled anhydrous potassium carbonate, and a few crystals of potassium iodide. After stirring at 80° C. for two hrs, the mixture was filtered. The filtrate was evaporated and the residue was stirred with 100 ml of water and then extracted into ether. The ether solution was washed with water (2×), saturated sodium chloride solution and dried over anhydrous magnesium sulfate. After filtering, the solution was acidified with ethereal hydrogen chloride and the resultant precipitate was collected and dried to yield 5.5 g (66%) of product, mp 170° C. (dec). Three recrystallizations from ethyl acetate:methanol (9:1) gave the analytical sample, mp 200°-203° C.

Workup

  1. filtrationthe mixture was filtered
  2. customThe filtrate was evaporated
  3. stirringthe residue was stirred with 100 ml of water
  4. extractionextracted into ether
  5. washThe ether solution was washed with water (2×), saturated sodium chloride solution
  6. dry with materialdried over anhydrous magnesium sulfate
  7. filtrationAfter filtering
  8. customthe resultant precipitate was collected
  9. customdried

Sources & evidence

ORD record
ord-7e87e3548d3e48e1b3227a5d34fc7de1
Source dataset
uspto-grants-1984_07
Patent number
US04458075

Reaction notes

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