Acetonitrile → 1-[4-[3-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-propoxy]-3-methoxyphenyl]-2,2,2-trifluoroethanone

HRID 1780090Notes

Reaction equation

HRID 1780090 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.Cl[CH2:18][CH2:19][CH2:20][O:21][C:22]1[CH:27]=[CH:26][C:25]([C:28](=[O:33])[C:29]([F:32])([F:31])[F:30])=[CH:24][C:23]=1[O:34][CH3:35].C([O-])([O-])=O.[K+].[K+].C(#N)C>O>[F:1][C:2]1[CH:16]=[CH:15][C:5]2[C:6]([CH:9]3[CH2:10][CH2:11][N:12]([CH2:18][CH2:19][CH2:20][O:21][C:22]4[CH:27]=[CH:26][C:25]([C:28](=[O:33])[C:29]([F:30])([F:31])[F:32])=[CH:24][C:23]=4[O:34][CH3:35])[CH2:13][CH2:14]3)=[N:7][O:8][C:4]=2[CH:3]=1

Participants

6

Reactant 4

HCID 6342AcetonitrileHCID 11430Potassium CarbonateHCID 8494213-(4-Piperidyl)-6-fluoro-1,2-benzisoxazoleHCID 100174981-[4-(3-Chloropropoxy)-3-methoxyphenyl]-2,2,2-trifluoroethanone

Product 1

HCID 104352741-[4-[3-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-propoxy]-3-methoxyphenyl]-2,2,2-trifluoroethanoneYield 56%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole (1.5 g, 6.7 mmol), 1-[4-(3-chloropropoxy)-3-methoxyphenyl]-2,2,2-trifluoroethanone (2.0 g, 6.7 mmol), K2CO3 (0.88 g), KI (0.1 g) and acetonitrile (50 ml) was stirred and refluxed for 16 hours. After cooling, the reaction was poured into water and the aqueous mixture extracted with ethyl acetate. The extract was washed (H2O), dried (MgSO4), and the solvent was concentrated to an oil, which upon evacuation at high vacuum afforded 3.2 g of a waxy solid. The solid was chromatographed on a Waters preparative LC (silica columns, eluting with 3% methanol-dichloromethane). Concentration of the appropriate fractions gave 1.8 g (56%) of 1-[4-[3-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-propoxy]-3-methoxyphenyl]-2,2,2-trifiuoro-ethanone solid, m.p.=94°-96° C.

Workup

  1. temperaturerefluxed for 16 hours
  2. temperatureAfter cooling
  3. extractionthe aqueous mixture extracted with ethyl acetate
  4. washThe extract was washed (H2O)
  5. dry with materialdried (MgSO4)
  6. concentrationthe solvent was concentrated to an oil, which upon evacuation at high vacuum
  7. customafforded 3.2 g of a waxy solid
  8. customThe solid was chromatographed on a Waters preparative LC (silica columns, eluting with 3% methanol-dichloromethane)

Sources & evidence

ORD record
ord-c2fbdca606794cd2b34a709451b9d312
Source dataset
uspto-grants-1997_05
Patent number
US05629326

Reaction notes

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