Trifluoroacetic acid → (5-fluoro-2-methoxy-pyridin-3-ylmethyl)-[3-methoxy-5-(5-methyl-1H-pyrrolo[2,3-b]pyridin-3-ylmethyl)-pyridin-2-yl]-amine

HRID 509977Notes

Reaction equation

HRID 509977 reaction equation
[CH3:1][O:2][C:3]1[C:4]([NH2:20])=[N:5][CH:6]=[C:7]([CH2:9][C:10]2[C:18]3[C:13](=[N:14][CH:15]=[C:16]([CH3:19])[CH:17]=3)[NH:12][CH:11]=2)[CH:8]=1.[F:21][C:22]1[CH:23]=[C:24]([CH:30]=O)[C:25]([O:28][CH3:29])=[N:26][CH:27]=1.C([SiH](CC)CC)C.FC(F)(F)C(O)=O>C(#N)C>[F:21][C:22]1[CH:23]=[C:24]([CH2:30][NH:20][C:4]2[C:3]([O:2][CH3:1])=[CH:8][C:7]([CH2:9][C:10]3[C:18]4[C:13](=[N:14][CH:15]=[C:16]([CH3:19])[CH:17]=4)[NH:12][CH:11]=3)=[CH:6][N:5]=2)[C:25]([O:28][CH3:29])=[N:26][CH:27]=1

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 226783235-Fluoro-2-methoxynicotinaldehydeHCID 582593253-methoxy-5-(5-methyl-1H-pyrrolo[2,3-b]pyridin-3-ylmethyl)-pyridin-2-ylamine

Product 1

HCID 67200110(5-fluoro-2-methoxy-pyridin-3-ylmethyl)-[3-methoxy-5-(5-methyl-1H-pyrrolo[2,3-b]pyridin-3-ylmethyl)-pyridin-2-yl]-amine

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
80 °C

Procedure

To 3-methoxy-5-(5-methyl-1H-pyrrolo[2,3-b]pyridin-3-ylmethyl)-pyridin-2-ylamine (128, 1 equivalent) in 2 mL of acetonitrile, 5-fluoro-2-methoxy-pyridine-3-carbaldehyde (37, 1 equivalent), triethylsilane (5 equivalents) and trifluoroacetic acid (6.9 equivalents) are added. The reaction is heated at 80° C. for 18 hours, then concentrated under vacuum and mixed with aqueous potassium carbonate and extracted with ethyl acetate. The organic layer is washed with water, brine, then dried over magnesium sulfate, filtered and the filtrate concentrated under vacuum. The resulting material is purified by silica gel column chromatography eluting with ethyl acetate and hexane. Appropriate fractions are combined and concentrated under vacuum to provide the desired compound.

Workup

  1. concentrationconcentrated under vacuum
  2. additionmixed with aqueous potassium carbonate
  3. extractionextracted with ethyl acetate
  4. washThe organic layer is washed with water, brine
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. concentrationthe filtrate concentrated under vacuum
  8. customThe resulting material is purified by silica gel column chromatography
  9. washeluting with ethyl acetate and hexane
  10. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-2060f99c2fbc4491ac5e8919d476ca23
Source dataset
uspto-grants-2015_08
Patent number
US09096593B2

Reaction notes

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