Trifluoroacetic acid → HCID 59593319, compound

HRID 1952042Notes

Reaction equation

HRID 1952042 reaction equation
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]=O)=[N:6][CH:7]=1.[Cl:10][C:11]1[CH:17]=[CH:16][C:14]([NH2:15])=[CH:13][CH:12]=1.C([SiH](CC)CC)C.FC(F)(F)C(O)=O>C(#N)C>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:8][NH:15][C:14]2[CH:16]=[CH:17][C:11]([Cl:10])=[CH:12][CH:13]=2)=[N:6][CH:7]=1

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 78124-ChloroanilineHCID 12052TriethylsilaneHCID 98775625-Bromopyridine-2-carbaldehyde

Product 1

HCID 59593319HCID 59593319, compound

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To 5-Bromo-pyridine-2-carbaldehyde (52, 1.00 g, 5.38 mmol) in acetonitrile (50.0 mL) were added p-chloroaniline (53, 0.686 g, 5.38 mmol), triethylsilane (6.00 mL, 0.0376 mol) and trifluoroacetic acid (3.00 mL, 0.0389 mol). The reaction was heated to reflux for 3 hours. The reaction was concentrated, poured into water and then extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 20% ethyl acetate in hexane to give a white solid (54, 0.75 g, 47.0%).

Workup

  1. temperatureThe reaction was heated
  2. temperatureto reflux for 3 hours
  3. concentrationThe reaction was concentrated
  4. additionpoured into water
  5. extractionextracted with ethyl acetate
  6. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  7. filtrationfiltered
  8. concentrationThe filtrate was concentrated
  9. custompurified by silica gel column chromatography
  10. washeluting with 20% ethyl acetate in hexane
  11. customto give a white solid (54, 0.75 g, 47.0%)

Sources & evidence

ORD record
ord-13f25aac3afc41e1b9b5b0c673400939
Source dataset
uspto-grants-2013_03
Patent number
US08404700B2

Reaction notes

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