Toluene → 3-(S)-benzyl-1-(2'-trifluoromethyl-biphenyl-4-ylmethyl)-piperazine

HRID 737129Notes

Reaction equation

HRID 737129 reaction equation
[CH2:1]([C@@H:8]1[NH:13][CH2:12][CH2:11][N:10]([CH2:14][C:15]2[CH:20]=[CH:19][C:18](Br)=[CH:17][CH:16]=2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[F:22][C:23]([F:34])([F:33])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=1B(O)O.C(=O)([O-])[O-].[Na+].[Na+].C1(C)C=CC=CC=1>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C(O)C>[CH2:1]([C@@H:8]1[NH:13][CH2:12][CH2:11][N:10]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([C:25]3[CH:26]=[CH:27][CH:28]=[CH:29][C:24]=3[C:23]([F:34])([F:33])[F:22])=[CH:17][CH:16]=2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 27343872-(Trifluoromethyl)benzeneboronic acidHCID 578494623-(S)-benzyl-1-(4-bromobenzyl)-piperazine

Product 1

HCID 578494973-(S)-benzyl-1-(2'-trifluoromethyl-biphenyl-4-ylmethyl)-piperazine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolvent

Conditions

Temperature
120 °C

Procedure

0.13 g of 3-(S)-benzyl-1-(4-bromo-benzyl)-piperazine were combined with 1.5 equiv. of 2-trifluoromethylphenyl boronic acid, 0.05 equiv. of tetrakis(triphenylphosphine)palladium(0), 2M aqueous sodium carbonate solution, toluene and ethanol. The reaction mixture was heated in a sealed tube at 120° C. overnight. The reaction mixture was filtered through Celite and concentrated in vacuo. The residue was diluted with water and extracted with ethyl acetate. The combined organic phases were washed with brine, dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was purified by flash chromatography to afford 0.18 g of the title compound. ES MS (+) m/z 411.

Workup

  1. filtrationThe reaction mixture was filtered through Celite
  2. concentrationconcentrated in vacuo
  3. additionThe residue was diluted with water
  4. extractionextracted with ethyl acetate
  5. washThe combined organic phases were washed with brine
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe crude material was purified by flash chromatography

Sources & evidence

ORD record
ord-ff45f35a42c0408caa737d3a47315698
Source dataset
uspto-grants-2009_09
Patent number
US07595397B2

Reaction notes

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