Sodium hydride → 2-Hydroxy-5-(2-nitro-4-trifluoromethanesulfonyl-phenoxy)-terephthalic acid diethyl ester

HRID 1358755Notes

Reaction equation

HRID 1358755 reaction equation
[OH:1][C:2]1[CH:12]=[C:11]([C:13]([O:15][CH2:16][CH3:17])=[O:14])[C:10]([OH:18])=[CH:9][C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5].[H-].[Na+].[N+:21]([C:24]1[CH:29]=[C:28]([S:30]([C:33]([F:36])([F:35])[F:34])(=[O:32])=[O:31])[CH:27]=[CH:26][C:25]=1Cl)([O-:23])=[O:22]>C1COCC1>[CH2:16]([O:15][C:13](=[O:14])[C:11]1[CH:12]=[C:2]([O:1][C:25]2[CH:26]=[CH:27][C:28]([S:30]([C:33]([F:35])([F:36])[F:34])(=[O:32])=[O:31])=[CH:29][C:24]=2[N+:21]([O-:23])=[O:22])[C:3]([C:4]([O:6][CH2:7][CH3:8])=[O:5])=[CH:9][C:10]=1[OH:18])[CH3:17]

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 79980Diethyl 2,5-dihydroxyterephthalateHCID 15479561-chloro-2-nitro-4-[(trifluoromethyl)sulfonyl]benzene

Product 1

HCID 99578742-Hydroxy-5-(2-nitro-4-trifluoromethanesulfonyl-phenoxy)-terephthalic acid diethyl ester

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of diethyl 2,5-dihydroxyterephthalate (100 mg, 0.393 mmol) in THF was added sodium hydride (32 mg of 60% dispersion in mineral oil) followed by 2-nitro-4-(trifluoromethylsulfonyl)chlorobenzene (228 mg, 0.787 mmol). The mixture was stirred at room temperature for overnight. The reaction was extracted with ethyl acetate, the organic layer was washed with water and brine, dried, concentrated and purified to give the title compound. 1H NMR (300 MHz, DMSO-d6) δ 10.77 (br s, 1H, OH), 8.78 (d, J=2.3 Hz, 1H), 8.22 (dd, J=2.3 & 9.0 Hz, 1H), 7.82(s, 1H), 7.56 (s, 1H), 7.19 (d, J=9.0 Hz, 1H), 4.32 (q, J=7.2 Hz, 2H, OCH2CH3), 4.09 (q, J=7.2 Hz, 2H, OCH2CH3), 1.3 (t, J=7.2 Hz, 3H, OCH2CH3), 0.92 (t, J=7.2 Hz, 3H, OCH2CH3).

Workup

  1. extractionThe reaction was extracted with ethyl acetate
  2. washthe organic layer was washed with water and brine
  3. customdried
  4. concentrationconcentrated
  5. custompurified

Sources & evidence

ORD record
ord-370048ee9b754305aaf87cc822d31ac9
Source dataset
uspto-grants-2003_07
Patent number
US06596772B1

Reaction notes

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