2,4-Difluoronitrobenzene → HCID 58707296, compound

HRID 2426078Notes

Reaction equation

HRID 2426078 reaction equation
F[C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[N+:9]([O-:11])=[O:10].[Cl:12][C:13]1[CH:14]=[C:15]([CH:18]=[C:19]([Cl:21])[CH:20]=1)[CH2:16][NH2:17].C(N(CC)C(C)C)(C)C>C(#N)C>[Cl:12][C:13]1[CH:14]=[C:15]([CH:18]=[C:19]([Cl:21])[CH:20]=1)[CH2:16][NH:17][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[N+:9]([O-:11])=[O:10]

Participants

5

Reactant 3

HCID 679672,4-DifluoronitrobenzeneHCID 81531DiisopropylethylamineHCID 457602Benzenemethanamine, 3,5-dichloro-

Product 1

HCID 58707296HCID 58707296, compoundYield 46%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 2,4-difluoronitrobenzene (5.0 mmol), 3,5-dichlorobenzylamine (5.0 mmol), N,N-diisopropylethylamine (10.0 mmol) and acetonitrile (25 mL) was heated at reflux for 18 h, cooled and concentrated in vacuo. The residue was dissolved in ethyl acetate; this solution was washed with water, dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel using 5% ethyl acetate in hexanes as eluent to yield the title compound as a yellowish solid (46%). 1H NMR (400 MHz, CDCl3): δ 9.28 (br s, 1H), 7.88 (m, 1H), 7.34 (s, 1H), 7.22 (s, 2H), 6.44 (m, 1H), 6.30 (dd, 1H), 4.43 (d, 2H).

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 18 h
  3. temperaturecooled
  4. concentrationconcentrated in vacuo
  5. dissolutionThe residue was dissolved in ethyl acetate
  6. washthis solution was washed with water
  7. dry with materialdried over Na2SO4
  8. concentrationconcentrated in vacuo
  9. customThe residue was purified by flash column chromatography on silica gel using 5% ethyl acetate in hexanes as eluent

Sources & evidence

ORD record
ord-f077673eb94b4102b8c8d89c1dccaf61
Source dataset
uspto-grants-2011_06
Patent number
US07968538B2

Reaction notes

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