Bromobenzene → Triphenylamine

HRID 1645724Notes

Reaction equation

HRID 1645724 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:8]1([NH:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.CC(C)([O-])C.[Na+]>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1([B-](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(C2C=CC=CC=2)C=CC=CC=1[PH+](C(C)(C)C)C(C)(C)C.C1(C)C(C)=CC=CC=1>[C:2]1([N:14]([C:15]2[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=2)[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 3

HCID 7961BromobenzeneHCID 11487DiphenylamineHCID 23676156Sodium t-butoxide

Product 1

HCID 11775TriphenylamineYield 87%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 231366732-Biphenylyl-di-tert-butylphosphonium tetraphenylborateCatalystHCID 7237O-XyleneSolvent

Procedure

A 100-ml four-necked flask was equipped with a stirrer, a thermometer and a reflux condenser. 7.536 g (48 mmol) of bromobenzene, 6.769 g (40 mmol) of diphenylamine, 4.613 g (48 mmol) of sodium-tert-butoxide, 0.009 g (0.04 mmol) of palladium (II) acetate and 5 ml of xylene were weighed in the flask, followed by stirring. Further, 0.074 g (0.12 mmol) of 2-biphenylyl-di-tert-butylphosphonium tetraphenylborate obtained in Example B-10 was weighed in air and added into the flask. The flask was purged with argon, followed by stirring at 125° C. for 4 hours. After the completion of the reaction, 45 ml of xylene and 50 ml of saturated sodium chloride solution were added, followed by separation. The organic phase was purified by column chromatography to afford 8.537 g of triphenylamine (yield: 87 mol % based on diphenylamine). The melting point was 125-126° C.

Workup

  1. customA 100-ml four-necked flask was equipped with a stirrer
  2. additionadded into the flask
  3. customThe flask was purged with argon
  4. stirringby stirring at 125° C. for 4 hours
  5. customAfter the completion of the reaction, 45 ml of xylene and 50 ml of saturated sodium chloride solution
  6. additionwere added
  7. customfollowed by separation
  8. customThe organic phase was purified by column chromatography

Sources & evidence

ORD record
ord-93f32ff9b5f24c1698ac3d821a720824
Source dataset
uspto-grants-2012_02
Patent number
US08124809B2

Reaction notes

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