Sodium Bicarbonate → HCID 59699835, compound

HRID 886570Notes

Reaction equation

HRID 886570 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[C:17]2[C:12](=[N:13][CH:14]=[C:15](B3OC(C)(C)C(C)(C)O3)[CH:16]=2)[N:11]([S:27]([C:30]2[CH:35]=[CH:34][C:33]([CH3:36])=[CH:32][CH:31]=2)(=[O:29])=[O:28])[CH:10]=1.Br[C:38]1[CH:39]=[C:40]([CH:44]=[O:45])[CH:41]=[N:42][CH:43]=1.C(=O)(O)[O-].[Na+]>C(#N)C.O1CCCC1>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[C:17]2[C:12](=[N:13][CH:14]=[C:15]([C:38]3[CH:39]=[C:40]([CH:44]=[O:45])[CH:41]=[N:42][CH:43]=3)[CH:16]=2)[N:11]([S:27]([C:30]2[CH:35]=[CH:34][C:33]([CH3:36])=[CH:32][CH:31]=2)(=[O:28])=[O:29])[CH:10]=1

Participants

6

Reactant 3

HCID 516892Sodium BicarbonateHCID 27847345-Bromo-3-pyridinecarboxaldehydeHCID 160390673-(2-Methoxyphenyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 59699835HCID 59699835, compoundYield 55.7%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
80 °C

Procedure

3-(2-Methoxy-phenyl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-(toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridine (5.0 g, 9.91 mmol), commercial 5-bromo-pyridine-3-carbaldehyde 1.84 g, 9.91 mmol) and 1,1′-bis(diphenylphosphino)ferrocenepalladium(II)-dichloride dichloromethane adduct (405 mg, 0.495 mmol) were combined in a vial under nitrogen and dissolved in acetonitrile (25 mL) and tetrahydrofuran (25 mL). Saturated sodium bicarbonate (25 mL) was added and the system was purged with nitrogen gas. The reaction mixture was capped and heated for 15 h at 80° C. The cooled mixture was diluted with ethyl acetate and washed with brine. The combined organic layers were dried over sodium sulfate and purified by flash chromatography on silica gel using a gradient of ethyl acetate in hexanes to afford 5-[3-(2-methoxy-phenyl)-1-(toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridin-5-yl]-pyridine-3-carbaldehyde (2.66 g, 55.7%). MS: m/z 484 (M+H+).

Workup

  1. customthe system was purged with nitrogen gas
  2. customThe reaction mixture was capped
  3. additionThe cooled mixture was diluted with ethyl acetate
  4. washwashed with brine
  5. dry with materialThe combined organic layers were dried over sodium sulfate
  6. custompurified by flash chromatography on silica gel using a gradient of ethyl acetate in hexanes

Sources & evidence

ORD record
ord-53e75f665cd54c5fbbc4e76765bfb93b
Source dataset
uspto-grants-2012_08
Patent number
US08242280B2

Reaction notes

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