4-(4-Nitro-3-benzyloxyphenoxy)-4'-(4-benzyloxycarbonylphenoxy)octafluorobiphenyl → 4-(4-Amino-3-hydroxyphenoxy)4'-(4-carboxyphenoxy)octafluorobiphenyl

HRID 2304996Notes

Reaction equation

HRID 2304996 reaction equation
[N+:1]([C:4]1[CH:47]=[CH:46][C:7]([O:8][C:9]2[C:14]([F:15])=[C:13]([F:16])[C:12]([C:17]3[C:22]([F:23])=[C:21]([F:24])[C:20]([O:25][C:26]4[CH:31]=[CH:30][C:29]([C:32]([O:34]CC5C=CC=CC=5)=[O:33])=[CH:28][CH:27]=4)=[C:19]([F:42])[C:18]=3[F:43])=[C:11]([F:44])[C:10]=2[F:45])=[CH:6][C:5]=1[O:48]CC1C=CC=CC=1)([O-])=O.[H][H]>O1CCCC1.C(OCC)(=O)C.[Pd]>[NH2:1][C:4]1[CH:47]=[CH:46][C:7]([O:8][C:9]2[C:10]([F:45])=[C:11]([F:44])[C:12]([C:17]3[C:22]([F:23])=[C:21]([F:24])[C:20]([O:25][C:26]4[CH:27]=[CH:28][C:29]([C:32]([OH:34])=[O:33])=[CH:30][CH:31]=4)=[C:19]([F:42])[C:18]=3[F:43])=[C:13]([F:16])[C:14]=2[F:15])=[CH:6][C:5]=1[OH:48]

Participants

6

Reactant 2

HCID 118146894-(4-Nitro-3-benzyloxyphenoxy)-4'-(4-benzyloxycarbonylphenoxy)octafluorobiphenylHCID 178418361HCID 178418361, compound

Product 1

HCID 110499734-(4-Amino-3-hydroxyphenoxy)4'-(4-carboxyphenoxy)octafluorobiphenylYield 91%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

49.9 g of the 4-(4-nitro-3-benzyloxyphenoxy)-4′-(4-benzyloxycarbonylphenoxy)octafluorobiphenyl prepared as described in Example 2 (0.065 mol) are dissolved in 400 ml of a mixture of tetrahydrofuran and ethyl acetate (volume ratio 1:1), and 5 g of Pd/C (palladium/carbon) are then added to the solution. The mixture is then hydrogenated using hydrogen at a pressure of 1 bar at room temperature in an autoclave with vigorous stirring; the reaction is terminated after 3 days. The yellow-beige solution is evaporated to half in a rotary evaporator and left to stand overnight at room temperature, during which the reaction product precipitates out in crystalline form. The reaction product is then separated off and dried for 48 hours under nitrogen at 40° C./10 mbar in a vacuum drying cabinet (yield: 91%).

Workup

  1. additionare then added to the solution
  2. customat room temperature
  3. customthe reaction is terminated after 3 days
  4. customThe yellow-beige solution is evaporated to half in a rotary evaporator
  5. waitleft
  6. customthe reaction product precipitates out in crystalline form
  7. customThe reaction product is then separated off
  8. customdried for 48 hours under nitrogen at 40° C./10 mbar in a vacuum
  9. customdrying cabinet (yield: 91%)

Sources & evidence

ORD record
ord-8843cac3a15a4e05bbfb2495e4bc4067
Source dataset
uspto-grants-2002_08
Patent number
US06437178B2

Reaction notes

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