Hydrochloric Acid → 2,3-Difluoro-6-nitro-(2-p-toluenesulfonyloxypropyl)oxybenzene

HRID 846335Notes

Reaction equation

HRID 846335 reaction equation
[F:1][C:2]1[C:7]([F:8])=[CH:6][CH:5]=[C:4]([N+:9]([O-:11])=[O:10])[C:3]=1[O:12][CH2:13][CH:14]([OH:16])[CH3:15].[C:17]1([CH3:27])[CH:22]=[CH:21][C:20]([S:23](Cl)(=[O:25])=[O:24])=[CH:19][CH:18]=1.C(OCC)(=O)C.Cl>N1C=CC=CC=1>[F:1][C:2]1[C:7]([F:8])=[CH:6][CH:5]=[C:4]([N+:9]([O-:11])=[O:10])[C:3]=1[O:12][CH2:13][CH:14]([O:16][S:23]([C:20]1[CH:21]=[CH:22][C:17]([CH3:27])=[CH:18][CH:19]=1)(=[O:25])=[O:24])[CH3:15]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 73974-Toluenesulfonyl chlorideHCID 8857Ethyl AcetateHCID 146971862,3-Difluoro-6-nitro-[(2-hydroxypropyl)oxy]benzene

Product 1

HCID 146971942,3-Difluoro-6-nitro-(2-p-toluenesulfonyloxypropyl)oxybenzeneYield 87.2%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

To a solution of 4.5 g of the compound obtained in Example 5 in 8.6 ml of pyridine was added 4.36 g of p-toluenesulfonyl chloride and the mixture was stirred under cooling with ice for 4 hours, and then at room temperature for 4 hours. To the mixture were added ethyl acetate and 1 N hydrochloric acid. The mixture was shaken, and the organic layer was separated. The organic layer was washed with water and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure. The residue was purified through silica gel column chromatography to yield 6.52 g of the titled compound.

Workup

  1. temperatureunder cooling with ice for 4 hours
  2. stirringThe mixture was shaken
  3. customthe organic layer was separated
  4. washThe organic layer was washed with water
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was removed under reduced pressure
  7. customThe residue was purified through silica gel column chromatography

Sources & evidence

ORD record
ord-c9befeeaef754feabada5e183d0022f7
Source dataset
uspto-grants-1992_08
Patent number
US05136059

Reaction notes

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