Potassium Permanganate → HCID 58305268, compound

HRID 1515908Notes

Reaction equation

HRID 1515908 reaction equation
[CH:1]1([CH2:6][CH:7]([C:18]2[NH:30][C:21]3=[N:22][CH:23]=[C:24]([S:26]([CH2:28][CH3:29])=[O:27])[CH:25]=[C:20]3[CH:19]=2)[C:8]2[CH:13]=[CH:12][C:11]([S:14]([CH3:17])(=[O:16])=[O:15])=[CH:10][CH:9]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.[Mn]([O-])(=O)(=O)=[O:32].[K+]>CO.O>[CH:1]1([CH2:6][CH:7]([C:18]2[NH:30][C:21]3=[N:22][CH:23]=[C:24]([S:26]([CH2:28][CH3:29])(=[O:32])=[O:27])[CH:25]=[C:20]3[CH:19]=2)[C:8]2[CH:13]=[CH:12][C:11]([S:14]([CH3:17])(=[O:16])=[O:15])=[CH:10][CH:9]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

5

Reactant 2

HCID 516875Potassium PermanganateHCID 672282252-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-ethyl]-5-ethanesulfinyl-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 58305268HCID 58305268, compoundYield 21%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-ethyl]-5-ethanesulfinyl-1H-pyrrolo[2,3-b]pyridine (37.3 mg, 0.84 mmol) in methanol (4 mL) at 0° C. was added a solution of potassium permanganate (13.3 mg, 0.084 mmol) in water (2 mL) dropwise. After stirring for 2 h at 0° C., the mixture was extracted with ethyl acetate, washed with brine, dried over anhydrous sodium sulfate, filtered through a short silica gel pad (QingDao silica gel, 200-300 mesh), and concentrated in vacuo to give the residue. 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-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-ethyl]-5-ethanesulfonyl-1H-pyrrolo[2,3-b]pyridine (8 mg, 21%): LC/MS m/e calcd for C23H28N2O4S2 [M+H]+ 461.62, observed 461.0; 1H NMR (400 MHz, CD3OD) δ ppm 8.59 (d, J=2.0 Hz, 1H), 8.38 (d, J=2.0 Hz, 1H), 7.88-7.92 (m, J=8.3 Hz, 2H), 7.59-7.63 (m, J=8.3 Hz, 2H), 6.62 (s, 1H), 4.36 (t, J=8.0 Hz, 1H), 3.25 (q, J=7.4 Hz, 4H), 3.07-3.13 (m, 4H), 2.26-2.34 (m, 1H), 2.11-2.19 (m, 1H), 1.61-1.71 (m, 2H), 1.46-1.53 (m, 2H), 1.23 (t, J=7.3 Hz, 5H).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washwashed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltered through a short silica gel pad (QingDao silica gel, 200-300 mesh)
  5. concentrationconcentrated in vacuo
  6. customto give the residue
  7. customPurification

Sources & evidence

ORD record
ord-fbe5b629413941c4bf71ff486dccab2f
Source dataset
uspto-grants-2012_07
Patent number
US08222416B2

Reaction notes

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