Sodium Carbonate → 5-[5-(3,4,5-trimethoxyphenyl)-1H-pyrrolo[2,3-b]pyridin-3-yl]-1H-indole

HRID 85014

Reaction equation

HRID 85014 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:10]([C:11]3[CH:12]=[C:13]4[C:17](=[CH:18][CH:19]=3)[NH:16][CH:15]=[CH:14]4)=[CH:9][N:8](S(C3C=CC(C)=CC=3)(=O)=O)[C:5]2=[N:6][CH:7]=1.[CH3:30][O:31][C:32]1[CH:33]=[C:34](B(O)O)[CH:35]=[C:36]([O:40][CH3:41])[C:37]=1[O:38][CH3:39].C([O-])([O-])=O.[Na+].[Na+]>CC#N.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[NH:16]1[C:17]2[C:13](=[CH:12][C:11]([C:10]3[C:4]4[C:5](=[N:6][CH:7]=[C:2]([C:34]5[CH:35]=[C:36]([O:40][CH3:41])[C:37]([O:38][CH3:39])=[C:32]([O:31][CH3:30])[CH:33]=5)[CH:3]=4)[NH:8][CH:9]=3)=[CH:19][CH:18]=2)[CH:14]=[CH:15]1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 27343903,4,5-Trimethoxybenzeneboronic acidHCID 667791765-bromo-3-(1H-indol-5-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 462362215-[5-(3,4,5-trimethoxyphenyl)-1H-pyrrolo[2,3-b]pyridin-3-yl]-1H-indole

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 6342AcetonitrileSolvent

Conditions

Temperature
150 °C

Procedure

To a solution of 5-bromo-3-(1H-indol-5-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridine (65 mg, 0.14 mmol) in CH3CN (1 mL) in a Personal Chemistry microwave reaction vial was added 3,4,5-trimethoxyphenylboronic acid (30 mg, 0.14 mmol), bis(triphenylphosphine)-palladium(II) dichloride (7.0 mg, 0.010 mmol), and 1 M Na2CO3 (1 mL). The resulting mixture was de-gassed with Ar for 10 min, after which it was heated at 150° C. for 10 min in a Personal Chemistry Optimizer. The organic layer was separated, filtered, and concentrated in vacuo. The residue was dissolved in MeOH (3 mL) and acetone (2 mL), and 2 M NaOH (1.5 mL) was added. The resulting mixture was stirred at 65° C. for 30 min, after which it was partitioned between EtOAc and 1 M NaOH. The organic layer was separated, dried over MgSO4, filtered, and stripped to give a residue purified via preparatory HPLC to give the title compound as a white solid. 1H NMR (DMSO-d6, 300 MHz): δ 11.78 (s, 1H), 11.03 (s, 1H), 8.51 (d, J=2.1 Hz, 1H), 8.36 (d, J=1.8 Hz, 1H), 7.86 (s, 1H), 7.72 (d, J=2.4 Hz, 1H), 7.45 (s, 2H), 7.32 (m, 1H), 6.92 (s, 2H), 6.45 (m, 1H), 3.85 (s, 6H), 3.70 (s, 3H); HPLC retention time: 2.04 minutes; MS ESI (m/z): 400.4 (M+1)+, calc. 399.

Workup

  1. customThe resulting mixture was de-gassed with Ar for 10 min
  2. customThe organic layer was separated
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. dissolutionThe residue was dissolved in MeOH (3 mL)
  6. additionacetone (2 mL), and 2 M NaOH (1.5 mL) was added
  7. customafter which it was partitioned between EtOAc and 1 M NaOH
  8. customThe organic layer was separated
  9. dry with materialdried over MgSO4
  10. filtrationfiltered
  11. customto give a residue
  12. custompurified via preparatory HPLC

Sources & evidence

ORD record
ord-110e6105a8ef4ea5ad58d09913bc8fc2
Source dataset
uspto-grants-2014_09
Patent number
US08846909B2

Linked notes

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