Water → 6-[3-(4-(4-fluorobenzoyl)-1-piperidyl)propyl]-6H-dibenzo[c,e]-1,2-thiazine 5,5-dioxide

HRID 654104Notes

Reaction equation

HRID 654104 reaction equation
[CH:1]1[C:6]2[C:7]3[CH:16]=[CH:15][CH:14]=[CH:13][C:8]=3[NH:9][S:10](=[O:12])(=[O:11])[C:5]=2[CH:4]=[CH:3][CH:2]=1.[H-].[Na+].Cl[CH2:20][CH2:21][CH2:22][N:23]1[CH2:28][CH2:27][CH:26]([C:29](=[O:37])[C:30]2[CH:35]=[CH:34][C:33]([F:36])=[CH:32][CH:31]=2)[CH2:25][CH2:24]1.O>CN(C)C=O.C(OCC)(=O)C>[F:36][C:33]1[CH:32]=[CH:31][C:30]([C:29]([CH:26]2[CH2:27][CH2:28][N:23]([CH2:22][CH2:21][CH2:20][N:9]3[C:8]4[CH:13]=[CH:14][CH:15]=[CH:16][C:7]=4[C:6]4[CH:1]=[CH:2][CH:3]=[CH:4][C:5]=4[S:10]3(=[O:12])=[O:11])[CH2:24][CH2:25]2)=[O:37])=[CH:35][CH:34]=1

Participants

7

Reactant 4

HCID 962WaterHCID 24758Sodium hydrideHCID 7080916~{h}-Benzo[c][1,2]benzothiazine 5,5-DioxideHCID 12404419[1-(3-Chloropropyl)piperidin-4-yl](4-fluorophenyl)methanone

Product 1

HCID 198884636-[3-(4-(4-fluorobenzoyl)-1-piperidyl)propyl]-6H-dibenzo[c,e]-1,2-thiazine 5,5-dioxideYield 51.2%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent3×HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

A solution of 6H-dibenzo[c,e]-1,2-thiazine 5,5-dioxide (1.7 g) in dry N,N-dimethylformamide (15 cc) is added dropwise to a suspension of sodium hydride (0.25 g, 80% suspension in oil) in N,N-dimethylformamide (5 cc). After 30 minutes' stirring, a solution of 1-(3-chloropropyl)-4-(4-fluorobenzoyl)piperidine (2.1 g) in N,N-dimethylformamide (15 cc) is added. The reaction mixture is heated to 100° C. for 40 minutes and is then cooled and poured into a mixture of water (150 cc) and ethyl acetate (150 cc). The organic phase is washed with water (3×50 cc), is dried over magnesium sulphate and is concentrated to dryness under reduced pressure (2.7 kPa). The residue is chromatographed on a column of silica gel (0.06-0.2-mm particle size, 2-cm diameter, 25-cm height) and eluted with a mixture of cyclohexane and ethyl acetate (50--50 by volume), 30-cc fractions being collected; fractions 7 to 16 are combined and concentrated to dryness under reduced pressure (2.7 kPa). The residue is recrystallized from ethanol (40 cc); the crystals obtained are filtered off, washed with ethanol (5 cc) and dried. 6-[3-(4-(4-fluorobenzoyl)-1-piperidyl)propyl]-6H-dibenzo[c,e]-1,2-thiazine 5,5-dioxide (1.8 g) is obtained, melting at 114° C.

Workup

  1. temperatureis then cooled
  2. washThe organic phase is washed with water (3×50 cc)
  3. dry with materialis dried over magnesium sulphate
  4. concentrationis concentrated to dryness under reduced pressure (2.7 kPa)
  5. customThe residue is chromatographed on a column of silica gel (0.06-0.2-mm particle size, 2-cm diameter, 25-cm height)
  6. washeluted with a mixture of cyclohexane and ethyl acetate (50--50 by volume), 30-cc fractions
  7. custombeing collected
  8. concentrationconcentrated to dryness under reduced pressure (2.7 kPa)
  9. customThe residue is recrystallized from ethanol (40 cc)
  10. customthe crystals obtained
  11. filtrationare filtered off
  12. washwashed with ethanol (5 cc)
  13. customdried

Sources & evidence

ORD record
ord-2d14d187092c47d9a0a35feae7a26986
Source dataset
uspto-grants-1992_07
Patent number
US05130313

Reaction notes

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