Hydroxyamine hydrochloride → HCID 135977438, compound

HRID 909453Notes

Reaction equation

HRID 909453 reaction equation
[CH3:1][O:2][CH2:3][C@H:4]([CH3:31])[O:5][C:6]1[CH:7]=[C:8]([C:23]2[NH:27][C:26]([C:28](=O)[CH3:29])=[CH:25][CH:24]=2)[CH:9]=[C:10]([O:12][C:13]2[CH:18]=[CH:17][C:16]([S:19]([CH3:22])(=[O:21])=[O:20])=[CH:15][CH:14]=2)[CH:11]=1.Cl.[NH2:33][OH:34].C([O-])(=O)C.[Na+]>CO.ClCCl>[CH3:1][O:2][CH2:3][C@H:4]([CH3:31])[O:5][C:6]1[CH:7]=[C:8]([C:23]2[NH:27][C:26](/[C:28](=[N:33]/[OH:34])/[CH3:29])=[CH:25][CH:24]=2)[CH:9]=[C:10]([O:12][C:13]2[CH:18]=[CH:17][C:16]([S:19]([CH3:22])(=[O:21])=[O:20])=[CH:15][CH:14]=2)[CH:11]=1

Participants

6

Reactant 3

HCID 443297Hydroxyamine hydrochlorideHCID 517045Sodium AcetateHCID 58065475HCID 58065475, compound

Product 1

HCID 135977438HCID 135977438, compoundYield 41.9%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

1-(5-{3-[(1S)-2-Methoxy-1-methylethoxy]-5-[4-(methylsulfonyl)phenoxy]phenyl}-1H-pyrrol-2-yl)ethanone (117 mg, 0.26 mmol) synthesized in Example (15c) was dissolved in methanol (6 mL), and hydroxylamine hydrochloride (37 mg, 0.53 mmol) and sodium acetate (26 mg, 0.32 mmol) were added, followed by heating to reflux for 6 hours under nitrogen atmosphere. The reaction solution was diluted with dichloromethane (60 mL), washed with water and saturated brine, and subsequently dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: ethyl acetate/hexane=30%-50%) to afford the desired product (50 mg, yield 41%) as a white solid.

Workup

  1. temperatureby heating
  2. temperatureto reflux for 6 hours under nitrogen atmosphere
  3. washwashed with water and saturated brine
  4. dry with materialsubsequently dried over anhydrous magnesium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customthe resulting residue was purified
  7. washsilica gel column chromatography (elution solvent: ethyl acetate/hexane=30%-50%)

Sources & evidence

ORD record
ord-93c252b12e5c4fce8c83b67d5491e685
Source dataset
uspto-grants-2011_09
Patent number
US08017610B2

Reaction notes

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