Sodium Chloride → (S)-10-[4-(3-Fluoro-propyl)-3-(2-methoxy-ethyl)-piperazin-1-yl]-2-trifluoromethyl-4H-3-thia-1,4,9-triaza-benzo[f]azulene

HRID 131506Notes

Reaction equation

HRID 131506 reaction equation
Br[CH2:2][CH2:3][CH2:4][F:5].[CH3:6][O:7][CH2:8][CH2:9][C@@H:10]1[NH:15][CH2:14][CH2:13][N:12]([C:16]2[C:25]3[N:24]=[C:23]([C:26]([F:29])([F:28])[F:27])[S:22][C:21]=3[NH:20][C:19]3[CH:30]=[CH:31][CH:32]=[CH:33][C:18]=3[N:17]=2)[CH2:11]1.C(=O)([O-])[O-].[K+].[K+].[I-].[Na+].[Cl-].[Na+]>C(O)C.O.C(OCC)(=O)C>[F:5][CH2:4][CH2:3][CH2:2][N:15]1[CH2:14][CH2:13][N:12]([C:16]2[C:25]3[N:24]=[C:23]([C:26]([F:28])([F:29])[F:27])[S:22][C:21]=3[NH:20][C:19]3[CH:30]=[CH:31][CH:32]=[CH:33][C:18]=3[N:17]=2)[CH2:11][C@@H:10]1[CH2:9][CH2:8][O:7][CH3:6]

Participants

9

Reactant 5

HCID 5234Sodium ChlorideHCID 5238Sodium IodideHCID 11430Potassium CarbonateHCID 67699Propane, 1-bromo-3-fluoro-HCID 135457486(S)-10-[3-(2-Methoxy-ethyl)-piperazin-1-yl]-2-trifluoromethyl-4H-3-thia-1,4,9-triaza-benzo[f]azulene

Product 1

HCID 136090394(S)-10-[4-(3-Fluoro-propyl)-3-(2-methoxy-ethyl)-piperazin-1-yl]-2-trifluoromethyl-4H-3-thia-1,4,9-triaza-benzo[f]azulene

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Procedure

Add 1-bromo-3-fluoropropane (0.14 mL, 1.52 mmol) to a slurry of (S)-10-[3-(2-methoxy-ethyl)-piperazin-1-yl]-2-trifluoromethyl-4H-3-thia-1,4,9-triaza-benzo[f]azulene (0.52 g, 1.26 mmol), powdered potassium carbonate (0.87 g, 6.32 mmol), and sodium iodide (0.95 g, 6.32 mmol) in absolute ethanol (7.8 mL) and heat to reflux. After an overnight period, cool, add saturated aqueous sodium chloride and ethyl acetate, and add deionized water to dissolve precipitated salt that formed during the extraction. Extract aqueous phase with ethyl acetate (2×), and dry (sodium sulfate), filter, and concentrate organics under reduced pressure to an oil (0.564 g). Purify the oil by flash chromatography, eluting with a gradient of a 2% solution of 2M ammonia in methanol, in dichloromethane, (0-100%) to give the title compound: mass spectrum (APCI, m/e): 472 (M+1); NMR (1H, 300 MHz, DMSO-d6): δ 8.47 (s, 1H), 6.96-6.82 (m, 3H), 6.71 (m, 1H), 4.55 (td, 2H, 2J(H,F)=48 Hz, 3J(H,H)=5.7 Hz), 3.47 (br. m, 3H), 3.31-3.18 (m, 3H), 3.15 (s, 3H), 2.70 (m, 2H), 2.55 (br. m, 1H), 2.38 (m, 2H), 1.86-1.67 (in, 3H), 1.61 (m, 1H).

Workup

  1. temperatureheat to reflux
  2. temperaturecool
  3. dissolutionto dissolve
  4. customprecipitated salt
  5. customthat formed during the extraction
  6. dry with materialExtract aqueous phase with ethyl acetate (2×), and dry (sodium sulfate)
  7. filtrationfilter
  8. concentrationconcentrate organics under reduced pressure to an oil (0.564 g)
  9. customPurify the oil by flash chromatography
  10. washeluting with a gradient of a 2% solution of 2M ammonia in methanol, in dichloromethane, (0-100%)

Sources & evidence

ORD record
ord-2c1ebb5ec1194163a73552fcb30b856f
Source dataset
uspto-grants-2008_06
Patent number
US07384934B2

Reaction notes

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