Tetrabutylammonium Fluoride → 2-[(E)-2-cyclobutyl-1-(4-methanesulfonyl-phenyl)-vinyl]-5-fluoro-1H-pyrrolo[2,3-b]pyridine

HRID 1515702Notes

Reaction equation

HRID 1515702 reaction equation
C1(S([N:10]2[C:14]3=[N:15][CH:16]=[C:17]([F:19])[CH:18]=[C:13]3[CH:12]=[C:11]2[C:20]([C:27]2[CH:32]=[CH:31][C:30]([S:33]([CH3:36])(=[O:35])=[O:34])=[CH:29][CH:28]=2)(O)[CH2:21][CH:22]2[CH2:25][CH2:24][CH2:23]2)(=O)=O)C=CC=CC=1.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>O1CCCC1.C(OCC)(=O)C>[CH:22]1(/[CH:21]=[C:20](/[C:11]2[NH:10][C:14]3=[N:15][CH:16]=[C:17]([F:19])[CH:18]=[C:13]3[CH:12]=2)\[C:27]2[CH:32]=[CH:31][C:30]([S:33]([CH3:36])(=[O:35])=[O:34])=[CH:29][CH:28]=2)[CH2:25][CH2:24][CH2:23]1

Participants

5

Reactant 2

HCID 2724141Tetrabutylammonium FluorideHCID 672280401-(1-benzenesulfonyl-5-fluoro-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclobutyl-1-(4-methylsulfonyl-phenyl)-ethanol

Product 1

HCID 532501452-[(E)-2-cyclobutyl-1-(4-methanesulfonyl-phenyl)-vinyl]-5-fluoro-1H-pyrrolo[2,3-b]pyridineYield 62.1%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 8857Ethyl AcetateSolvent

Procedure

A solution of 1-(1-benzenesulfonyl-5-fluoro-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclobutyl-1-(4-methylsulfonyl-phenyl)-ethanol (520 mg, 1 mmol) in tetrahydrofuran (0.5 mL) and a tetrabutylammonium fluoride solution in tetrahydrofuran (1 M, 5.0 mL, 5.0 mmol) was stirred at room temperature for 2 h. The mixture was diluted with ethyl acetate (150 mL), washed with a saturated aqueous ammonium chloride solution and brine, dried over anhydrous sodium sulfate and concentrated in vacuo. Purification using a Waters automated flash system (column: Xterra 30 mm×100 mm, sample manager 2767, pump 2525, detector: ZQ mass and UV 2487, solvent system: acetonitrile and 0.1% ammonium hydroxide in water) afforded 2-[(E)-2-cyclobutyl-1-(4-methanesulfonyl-phenyl)-vinyl]-5-fluoro-1H-pyrrolo[2,3-b]pyridine (230 mg, 62.1%) as a light yellow solid: LC/MS m/e calcd for C20H19FN2O2S [M+H]+ 371.45, observed 371.0; 1H NMR (400 MHz, CD3OD) δ ppm 8.06 (d, J=8.3 Hz, 3H), 7.50-7.58 (m, 3H), 6.66 (d, J=9.3 Hz, 1H), 5.86 (s, 1H), 3.22 (s, 3H), 2.99 (m, 1H), 2.04-2.16 (m, 4H), 1.85-1.94 (m, 2H).

Workup

  1. washwashed with a saturated aqueous ammonium chloride solution and brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. concentrationconcentrated in vacuo
  4. customPurification

Sources & evidence

ORD record
ord-983d6c8a624447efab9d8558436ad0d7
Source dataset
uspto-grants-2012_07
Patent number
US08222416B2

Reaction notes

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