Acetyl chloride → N-(4-ethynylphenyl)acetamide

HRID 340325Notes

Reaction equation

HRID 340325 reaction equation
[C:1]([C:3]1[CH:9]=[CH:8][C:6]([NH2:7])=[CH:5][CH:4]=1)#[CH:2].C(N(CC)CC)C.[C:17](Cl)(=[O:19])[CH3:18]>C(Cl)Cl.C(OCC)(=O)C.O>[C:1]([C:3]1[CH:9]=[CH:8][C:6]([NH:7][C:17](=[O:19])[CH3:18])=[CH:5][CH:4]=1)#[CH:2]

Participants

7

Reactant 3

HCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 37600254-Ethynylaniline

Product 1

HCID 11412536N-(4-ethynylphenyl)acetamide

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 4-ethynylaniline (commercially available) (1.0 eq.), and triethylamine (1.0 eq.) in methylene chloride (0.04 M), acetyl chloride (1.5 eq.) was added slowly. Then the reaction mixture was stirred at 0° C. for 1 hour. After warmed to ambient temperature, the reaction mixture was diluted with ethyl acetate and water. The two phases were separated, and the aqueous layer was extracted twice with ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous MgSO4, and concentrated en vacuo. The crude material was purified by flash chromatography on a COMBIFLASH® system (ISCO) using 0-80% ethyl acetate in hexane to give N-(4-ethynylphenyl)acetamide as a white solid.

Workup

  1. temperatureAfter warmed to ambient temperature
  2. customThe two phases were separated
  3. extractionthe aqueous layer was extracted twice with ethyl acetate
  4. washThe combined organic layers were washed with brine
  5. dry with materialdried over anhydrous MgSO4
  6. concentrationconcentrated en vacuo
  7. customThe crude material was purified by flash chromatography on a COMBIFLASH® system (ISCO)

Sources & evidence

ORD record
ord-c805a7a69a5a42e1b9d4da7949be8052
Source dataset
uspto-grants-2014_11
Patent number
US08895577B2

Reaction notes

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