Cesium carbonate → HCID 66591335, compound

HRID 1093565Notes

Reaction equation

HRID 1093565 reaction equation
[F:1][C:2]([F:11])([F:10])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[SH:9].C(=O)([O-])[O-].[Cs+].[Cs+].[C:18]([O:22][C:23]([N:25]1[CH2:30][CH2:29][CH:28](OS(C)(=O)=O)[CH2:27][CH2:26]1)=[O:24])([CH3:21])([CH3:20])[CH3:19]>CN(C=O)C.O>[C:18]([O:22][C:23]([N:25]1[CH2:30][CH2:29][CH:28]([S:9][C:4]2[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=2[C:2]([F:1])([F:10])[F:11])[CH2:27][CH2:26]1)=[O:24])([CH3:21])([CH3:19])[CH3:20]

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 27778892-(Trifluoromethyl)benzenethiolHCID 41848691-(tert-Butoxycarbonyl)-4-(methanesulfonyloxy)piperidine

Product 1

HCID 66591335HCID 66591335, compoundYield 99%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a stirred solution of 2-trifluoromethylbenzenethiol (0.637 g, 0.00358 mole) in DMF (5 mL) was added cesium carbonate (1.396 g, 0.00429 mole) followed by 4-methanesulfonyloxy-piperidine-1-carboxylic acid tert-butyl ester (1.0 g, 0.00358 mole). The reaction mixture was heated at 80° C. overnight. The mixture was then diluted with water and the product was extracted with ethyl acetate. The ethyl acetate layer was washed brine solution, dried over sodium sulfate, filtered and concentrated. The resulting residue was washed with hexane to afford 0.81 g (99%) of 4-(2-trifluoromethyl-phenylsulfanyl)-piperidine-1-carboxylic acid tert-butyl ester. LCMS: 362.13 (M+1)+, 99%. A solution of 4-(2-trifluoromethyl-phenylsulfanyl)-piperidine-1-carboxylic acid tert-butyl ester (0.81 g, 0.00224 mole) in dioxane.HCl (2 mL) was stirred at ambient temperature for 30 minutes. The reaction mixture was then concentrated under reduced pressure and the resulting residue was washed with hexane twice to afford 0.604 g (90%) of 4-(2-trifluoromethyl-phenylsulfanyl)-piperidine hydrochloride which was used in the next step without further purification. LCMS: 262.08 (M+1)+, 95.07%.

Workup

  1. extractionthe product was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed brine solution
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. washThe resulting residue was washed with hexane

Sources & evidence

ORD record
ord-dd581586bb9447deb7641be4cc854c67
Source dataset
uspto-grants-2012_03
Patent number
US08129376B2

Reaction notes

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