1-Fluoro-2,6-dichloropyridinium Triflate → HCID 59331363, compound

HRID 1882018Notes

Reaction equation

HRID 1882018 reaction equation
[CH:1]1([S:4]([C:7]2[CH:12]=[CH:11][C:10]([CH:13]([C:21]3[NH:25][C:24]([C:26]4[S:27][C:28]([CH:31]([OH:33])[CH3:32])=[CH:29][N:30]=4)=[CH:23][CH:22]=3)[CH2:14][CH:15]3[CH2:20][CH2:19][O:18][CH2:17][CH2:16]3)=[CH:9][CH:8]=2)(=[O:6])=[O:5])[CH2:3][CH2:2]1.[F:34]C(F)(F)S([O-])(=O)=O.ClC1C=CC=C(Cl)[N+]=1F>ClCCl.C(OCC)(=O)C>[CH:1]1([S:4]([C:7]2[CH:12]=[CH:11][C:10]([CH:13]([C:21]3[NH:25][C:24]([C:26]4[S:27][C:28]([CH:31]([OH:33])[CH3:32])=[CH:29][N:30]=4)=[C:23]([F:34])[CH:22]=3)[CH2:14][CH:15]3[CH2:16][CH2:17][O:18][CH2:19][CH2:20]3)=[CH:9][CH:8]=2)(=[O:5])=[O:6])[CH2:3][CH2:2]1

Participants

5

Reactant 2

HCID 27373111-Fluoro-2,6-dichloropyridinium TriflateHCID 25107073HCID 25107073, compound

Product 1

HCID 59331363HCID 59331363, compound

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 1-[2-(5-{1-[4-(cyclopropylsulfonyl)phenyl]-2-(tetrahydro-2H-pyran-4-yl)ethyl}-1H-pyrrol-2-yl)-1,3-thiazol-5-yl]ethanol (420 mg) in dichloromethane (5 mL) was added 2,6-dichloro-1-fluoropyridinium trifluoromethanesulfonate (410 mg), and the mixture was stirred at room temperature for 3 hr. The reaction mixture was diluted with ethyl acetate, and washed with saturated aqueous sodium hydrogen carbonate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4) and concentrated. The residue was subjected to preparative HPLC to give a mixture of the title compound and a positional isomer thereof (35.0 mg). The mixture of the obtained positional isomers was dissolved in hexane-ethanol (850:150, volume ratio, 114 mL), and the solution was subjected to HPLC using TSK GEL SHILICA-60 (20 mm ID×250 mL, manufactured by Tosoh Corporation silica). Using hexane-ethanol (850:150, volume ratio) as a mobile phase, the solution was eluted at flow rate 20 mL/min and at room temperature, and the fraction was separated at retention time 39.0 min, and concentrated. The obtained solid was dissolved in ethyl acetate and the insoluble material was filtered off. The filtration was concentrated to give the title compound (26.8 mg, yield 4%) as a colorless amorphous solid. MS: 505 (MH+).

Workup

  1. washwashed with saturated aqueous sodium hydrogen carbonate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. customto give

Sources & evidence

ORD record
ord-3df008530b364526925a8af93ef5c3b0
Source dataset
uspto-grants-2012_11
Patent number
US08318746B2

Reaction notes

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