Toluene → (S)-3-Benzyl-1-(2',5'-dimethyl-biphenyl-4-ylmethyl)-piperazine

HRID 737132Notes

Reaction equation

HRID 737132 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.[CH3:22][C:23]1[CH:28]=[CH:27][C:26]([CH3:29])=[CH:25][C:24]=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:24]3[CH:25]=[C:26]([CH3:29])[CH:27]=[CH:28][C:23]=3[CH3:22])=[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 2734347(2,5-Dimethylphenyl)boronic acidHCID 578494623-(S)-benzyl-1-(4-bromobenzyl)-piperazine

Product 1

HCID 57849486(S)-3-Benzyl-1-(2',5'-dimethyl-biphenyl-4-ylmethyl)-piperazineYield 37%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolvent

Conditions

Temperature
85 °C

Procedure

0.1 g of 3-(S)-benzyl-1-(4-bromo-benzyl)-piperazine were combined with 1.5 equiv. of 2,5-dimethylphenyl boronic acid, 0.05 equiv. of tetrakis(triphenylphosphine)palladium(0), 6 equiv. of 2M aqueous sodium carbonate solution, toluene and ethanol. The reaction mixture was heated at 85° C. under nitrogen overnight. The reaction mixture was 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 0.04 g of the title compound. Yield 37% ES MS (+) m/z 371.

Workup

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

Sources & evidence

ORD record
ord-38f8ce7570524cb68d505c5fcaaf192a
Source dataset
uspto-grants-2009_09
Patent number
US07595397B2

Reaction notes

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