Aniline → N-phenyl-1H-pyrrolo(2,3-b)pyridin-3-amine

HRID 250708Notes

Reaction equation

HRID 250708 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Br[C:9]1[C:17]2[C:12](=[N:13][CH:14]=[CH:15][CH:16]=2)[N:11]([Si](C(C)C)(C(C)C)C(C)C)[CH:10]=1.C1(C2C=CC=CC=2)C=CC=CC=1P(C(C)(C)C)C(C)(C)C.CC([O-])(C)C.[Na+].C(O)(C(F)(F)F)=O>C1(C)C=CC=CC=1.CC([O-])=O.CC([O-])=O.[Pd+2]>[C:2]1([NH:1][C:9]2[C:17]3[C:12](=[N:13][CH:14]=[CH:15][CH:16]=3)[NH:11][CH:10]=2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

8

Reactant 5

HCID 6115AnilineHCID 6422Trifluoroacetic acidHCID 27342152-(Di-tert-butylphosphino)biphenylHCID 23676156Sodium t-butoxideHCID 580868483-bromo-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 24180721N-phenyl-1H-pyrrolo(2,3-b)pyridin-3-amine

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 1140TolueneSolvent2×

Procedure

A 1 dram vial was charged with aniline (2-3 equiv), and 10 mg of 3-bromo-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridine 583 in 0.4 mL toluene (dry, degassed). A catalyst stock solution containing 3 mmol Pd(OAc)2, 3 mmol biphenyl-2-yl-di-tert-butyl-phosphane and 15 mL of toluene was prepared. To the reaction mixture, 0.050 mL of the catalyst solution was added. Excess NaOtBu was added as a solid to the reaction. The vial was then placed in a 75° C. oven for 60 minutes (shaken several times over an hour). After cooling, the reaction was neutralized with 0.100 mL of TFA. After 30 minutes the sample was evaporated and re-solvated in 0.300 mL of DMSO. The desired compound was isolated by preparative HPLC/MS.

Workup

  1. customwas prepared
  2. customwas then placed in a 75° C.
  3. customfor 60 minutes
  4. temperatureAfter cooling
  5. customAfter 30 minutes the sample was evaporated and re-solvated in 0.300 mL of DMSO

Sources & evidence

ORD record
ord-b30564b747c84415b78974b1a439332c
Source dataset
uspto-grants-2011_01
Patent number
US07863288B2

Reaction notes

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