Sodium hydride → tert-Butyl ({4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(5-methoxypyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}methyl)methylcarbamate

HRID 869757Notes

Reaction equation

HRID 869757 reaction equation
[H-].[Na+].[F:3][C:4]1[C:5]([CH2:16][N:17]([CH3:25])[C:18](=[O:24])[O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[CH:6][NH:7][C:8]=1[C:9]1[C:10]([F:15])=[N:11][CH:12]=[CH:13][CH:14]=1.C1OCCOCCOCCOCCOC1.[CH3:41][O:42][C:43]1[CH:44]=[CH:45][C:46]([S:49](Cl)(=[O:51])=[O:50])=[N:47][CH:48]=1>O1CCCC1>[F:3][C:4]1[C:5]([CH2:16][N:17]([CH3:25])[C:18](=[O:24])[O:19][C:20]([CH3:21])([CH3:22])[CH3:23])=[CH:6][N:7]([S:49]([C:46]2[CH:45]=[CH:44][C:43]([O:42][CH3:41])=[CH:48][N:47]=2)(=[O:50])=[O:51])[C:8]=1[C:9]1[C:10]([F:15])=[N:11][CH:12]=[CH:13][CH:14]=1

Participants

6

Reactant 4

HCID 24758Sodium hydrideHCID 3633615-Crown-5HCID 552792395-Methoxypyridine-2-sulfonyl chlorideHCID 67176761tert-butyl {[4-fluoro-5-(2-fluoropyridin-3-yl)-1H-pyrrol-3-yl]methyl}methylcarbamate

Product 1

HCID 67178606tert-Butyl ({4-fluoro-5-(2-fluoropyridin-3-yl)-1-[(5-methoxypyridin-2-yl)sulfonyl]-1H-pyrrol-3-yl}methyl)methylcarbamateYield 93%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a suspension of sodium hydride (60% in oil, 168 mg) in tetrahydrofuran (10 mL) were added tert-butyl {[4-fluoro-5-(2-fluoropyridin-3-yl)-1H-pyrrol-3-yl]methyl}methylcarbamate (970 mg), 15-crown-5 (925 mg) and a solution of 5-methoxypyridine-2-sulfonyl chloride (984 mg) in tetrahydrofuran (15 mL) at room temperature, and the mixture was stirred for 30 min. The reaction mixture concentrated under reduced pressure to a half volume, diluted with water, and extracted with ethyl acetate. The separated aqueous layer was extracted again with ethyl acetate. Combined organic layers were washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent:hexane-ethyl acetate=17:3→1:1) to give the title compound as a yellow oil (yield 1.38 g, 93%).

Workup

  1. concentrationThe reaction mixture concentrated under reduced pressure to a half volume
  2. additiondiluted with water
  3. extractionextracted with ethyl acetate
  4. extractionThe separated aqueous layer was extracted again with ethyl acetate
  5. washCombined organic layers were washed with saturated brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by silica gel column chromatography (eluent:hexane-ethyl acetate=17:3→1:1)

Sources & evidence

ORD record
ord-580acb9846924a4887ee5a082f6ca803
Source dataset
uspto-grants-2015_03
Patent number
US08969387B2

Reaction notes

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