Potassium Permanganate → 1-benzenesulfonyl-2-[2-cyclopentyl-1-(6-methanesulfonyl-pyridin-3-yl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester

HRID 1515726Notes

Reaction equation

HRID 1515726 reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:6]=[C:7]2[CH:13]=[C:12]([C:14]([C:21]3[CH:22]=[N:23][C:24]([S:27]([CH3:29])=[O:28])=[CH:25][CH:26]=3)=[CH:15][CH:16]3[CH2:20][CH2:19][CH2:18][CH2:17]3)[N:11]([S:30]([C:33]3[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=3)(=[O:32])=[O:31])[C:8]2=[N:9][CH:10]=1)=[O:4].[Mn]([O-])(=O)(=O)=[O:40].[K+]>CO.O>[CH3:1][O:2][C:3]([C:5]1[CH:6]=[C:7]2[CH:13]=[C:12]([C:14]([C:21]3[CH:22]=[N:23][C:24]([S:27]([CH3:29])(=[O:40])=[O:28])=[CH:25][CH:26]=3)=[CH:15][CH:16]3[CH2:17][CH2:18][CH2:19][CH2:20]3)[N:11]([S:30]([C:33]3[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=3)(=[O:32])=[O:31])[C:8]2=[N:9][CH:10]=1)=[O:4]

Participants

5

Reactant 2

HCID 516875Potassium PermanganateHCID 672279081-benzenesulfonyl-2-[2-cyclopentyl-1-(6-methanesulfinyl-pyridin-3-yl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester

Product 1

HCID 672291071-benzenesulfonyl-2-[2-cyclopentyl-1-(6-methanesulfonyl-pyridin-3-yl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl esterYield 73.9%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Conditions

Temperature
25 °C

Procedure

To a mixture of 1-benzenesulfonyl-2-[2-cyclopentyl-1-(6-methanesulfinyl-pyridin-3-yl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester (301 mg, 0.55 mmol) in methanol (30 ml) was added a solution of potassium permanganate (88 mg, 0.55 mmol) in water (30 ml). The reaction mixture was stirred at 25° C. for 1 h. The suspension was filtered through a short silica gel pad and then washed with ethyl acetate (3×30 mL). The filtrate was concentrated and extracted with ethyl acetate (2×50 mL). The combined organic extracts were washed with water (2×20 mL), dried over anhydrous sodium sulfate and then concentrated in vacuo to afford 1-benzenesulfonyl-2-[2-cyclopentyl-1-(6-methanesulfonyl-pyridin-3-yl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester (230 mg, 72%): LC/MS m/e calcd for C28H27N3O6S2 [M+H]+ 566.67, observed 565.9.

Workup

  1. filtrationThe suspension was filtered through a short silica gel pad
  2. washwashed with ethyl acetate (3×30 mL)
  3. concentrationThe filtrate was concentrated
  4. extractionextracted with ethyl acetate (2×50 mL)
  5. washThe combined organic extracts were washed with water (2×20 mL)
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-6a1e1c15df294dbab5b11bbb19fe94a3
Source dataset
uspto-grants-2012_07
Patent number
US08222416B2

Reaction notes

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