Water → HCID 22676835, compound

HRID 1006261Notes

Reaction equation

HRID 1006261 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([CH:20]=C)[CH:18]=3)[N:13]([CH2:22][C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([O:29][CH3:30])[CH:24]=3)[C:12]=2[C:31]([O:33][CH2:34][CH3:35])=[O:32])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].I([O-])(=O)(=O)=[O:37].[Na+].O>O1CCCC1.[Os](=O)(=O)(=O)=O>[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([CH:20]=[O:37])[CH:18]=3)[N:13]([CH2:22][C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([O:29][CH3:30])[CH:24]=3)[C:12]=2[C:31]([O:33][CH2:34][CH3:35])=[O:32])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 962WaterHCID 22676769HCID 22676769, compoundHCID 23667635Sodium periodate

Product 1

HCID 22676835HCID 22676835, compoundYield 75%

Reagents, catalysts & solvents 2

HCID 30318Osmium TetroxideCatalystHCID 8028TetrahydrofuranSolvent

Procedure

Ethyl 3-(4-tert-butylphenyl)-1-(3-methoxybenzyl)-5-vinyl-1H-indole-2-carboxylate (Example 129, 2.28 g, 4.9 mmol) was dissolved in anhydrous tetrahydrofuran (25 mL), and osmium tetroxide (2.5 weight % solution in 2-methyl-2-propanol, 1.5 mL, 0.15 mmol) was added. After ten minutes, the reaction mixture was cooled with an ice bath. Sodium periodate (2.10 g, 9.8 mmol) was added followed by a minimum volume of water to dissolve the solids. The reaction was allowed to return to room temperature, and after 30 minutes, the reaction was partitioned between water and diethyl ether. The organic layer was separated, dried over anhydrous magnesium sulfate, and concentrated. The resulting crude oil was passed through a pad of silica gel with 20% ethyl acetate/hexane. The filtrate was concentrated in vacuo without heat to provide the title compound as a brown oil (1.70 g, 75%). The product had: 1H NMR (300 MHz, acetone-d6) 10.01 (s, 1 H), 8.15 (d, 1 H), 7.88 (d, 1 H), 7.75 (d, 1 H), 7.54 (d, 2 H), 7.44 (d, 2 H), 7.21-7.19 (m, 1 H), 6.81-6.79 (m, 1 H), 6.72-6.69 (m, 2 H), 5.92 (s, 2 H), 4.12 (q, 2 H), 3.71 (s, 3 H), 1.39 (s, 9 H), 0.78 (t, 3 H).

Workup

  1. waitAfter ten minutes
  2. temperaturethe reaction mixture was cooled with an ice bath
  3. dissolutionto dissolve the solids
  4. customto return to room temperature
  5. customthe reaction was partitioned between water and diethyl ether
  6. customThe organic layer was separated
  7. dry with materialdried over anhydrous magnesium sulfate
  8. concentrationconcentrated
  9. concentrationThe filtrate was concentrated in vacuo
  10. temperaturewithout heat

Sources & evidence

ORD record
ord-22db32924fa34e87a5dfdc5419344725
Source dataset
uspto-grants-2004_09
Patent number
US06787651B2

Reaction notes

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