Potassium Carbonate → 3,4-Bis(2,2,2-trifluoroethoxy)nitrobenzene

HRID 2412332Notes

Reaction equation

HRID 2412332 reaction equation
[C:1](=[O:4])([O-])[O-].[K+].[K+].FC(F)(F)S([O:12][CH2:13][C:14]([F:17])([F:16])[F:15])(=O)=O.[N+:20]([C:23]1[CH:24]=[C:25](O)[C:26](=[CH:28][CH:29]=1)O)([O-:22])=[O:21]>CC(C)=O>[F:17][C:14]([F:15])([F:16])[CH2:13][O:12][C:28]1[CH:29]=[C:23]([N+:20]([O-:22])=[O:21])[CH:24]=[CH:25][C:26]=1[O:4][CH2:1][C:14]([F:17])([F:16])[F:15]

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 803662,2,2-Trifluoroethyl trifluoromethanesulfonateHCID 35051094-Nitrocatechol

Product 1

HCID 133704333,4-Bis(2,2,2-trifluoroethoxy)nitrobenzene

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent2×

Procedure

To a refluxing mixture of 12.7 g (0.092 mole) of potassium carbonate, 21.3 g. (0.092 mole) of 2,2,2-trifluoroethyl trifluoromethanesulfonate and 62 ml. of acetone is added dropwise 6.2 g. (0.040 mole) of 4-nitrocatechol in 62 ml. of acetone over about 2.5 hours. Refluxing is continued for a total of 24 hours, then the solution is evaporated. The residue is mixed with equal volumes of water and diethyl ether. The ether layer is separated, washed with water and saturated sodium chloride solution and dried. Evaporation provides crude 3,4-bis(2,2,2-trifluoroethoxy)nitrobenzene. Chromatographic purification on a silica gel column is effected by eluting with mixtures of chloroform and hexane. Recrystallization from cyclohexane with a small amount of benzene provides solid product, m.p. 63°-65° C.

Workup

  1. temperatureRefluxing
  2. customis continued for a total of 24 hours
  3. customthe solution is evaporated
  4. additionThe residue is mixed with equal volumes of water and diethyl ether
  5. customThe ether layer is separated
  6. washwashed with water and saturated sodium chloride solution
  7. customdried
  8. customEvaporation

Sources & evidence

ORD record
ord-a2c1c22ccc03492188752860682324a1
Source dataset
uspto-grants-1985_01
Patent number
US04491584

Reaction notes

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