N-[4-[4-(phenylmethyl)-1-piperazinyl]phenyl]-4'-(trifluoro-methyl)-[1,1'-biphenyl]-2-carboxamide → 4'-Trifluoromethyl-biphenyl-2-carboxylic acid [4-(piperazinyl)-phenyl]-amide

HRID 1375940Notes

Reaction equation

HRID 1375940 reaction equation
C1(C[N:8]2[CH2:13][CH2:12][N:11]([C:14]3[CH:19]=[CH:18][C:17]([NH:20][C:21]([C:23]4[C:24]([C:29]5[CH:34]=[CH:33][C:32]([C:35]([F:38])([F:37])[F:36])=[CH:31][CH:30]=5)=[CH:25][CH:26]=[CH:27][CH:28]=4)=[O:22])=[CH:16][CH:15]=3)[CH2:10][CH2:9]2)C=CC=CC=1.[H][H]>CO.C1COCC1.[Pd]>[N:11]1([C:14]2[CH:15]=[CH:16][C:17]([NH:20][C:21]([C:23]3[C:24]([C:29]4[CH:34]=[CH:33][C:32]([C:35]([F:37])([F:36])[F:38])=[CH:31][CH:30]=4)=[CH:25][CH:26]=[CH:27][CH:28]=3)=[O:22])=[CH:18][CH:19]=2)[CH2:12][CH2:13][NH:8][CH2:9][CH2:10]1

Participants

6

Reactant 2

HCID 22499401N-[4-[4-(phenylmethyl)-1-piperazinyl]phenyl]-4'-(trifluoro-methyl)-[1,1'-biphenyl]-2-carboxamideHCID 178418361HCID 178418361, compound

Product 1

HCID 112010994'-Trifluoromethyl-biphenyl-2-carboxylic acid [4-(piperazinyl)-phenyl]-amideYield 49.5%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of intermediate (5) (0.19 mole) in methanol (600 ml) and THF (600 ml) was hydrogenated overnight with Pd/C 10% (3 g) as a catalyst. After uptake of hydrogen (1 equivalent), the catalyst was filtered off and the filtrate was evaporated. The residue was triturated in DIPE. The precipitate was filtered off, dried, and dissolved in water. The mixture was alkalinized with Na2CO3 and then extracted with DCM. The organic layer was separated, dried, filtered and the solvent was evaporated. The residue was triturated in DIPE. The precipitate was filtered off and dried, yielding 40 g of N-[4-(1-piperazinyl)phenyl]-4′-(trifluoromethyl)-[1,1′-biphenyl]-2-carboxamide (intermediate 6).

Workup

  1. customthe filtrate was evaporated
  2. customThe residue was triturated in DIPE
  3. filtrationThe precipitate was filtered off
  4. customdried
  5. dissolutiondissolved in water
  6. extractionextracted with DCM
  7. customThe organic layer was separated
  8. customdried
  9. filtrationfiltered
  10. customthe solvent was evaporated
  11. customThe residue was triturated in DIPE
  12. filtrationThe precipitate was filtered off
  13. customdried

Sources & evidence

ORD record
ord-ce74aebd432a47298860f86e90325928
Source dataset
uspto-grants-2007_01
Patent number
US07169796B2

Reaction notes

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