4-Methylpyridine → 1-[4-(4-Butyl-phenyl)-but-3-ynyl]-4-methyl-pyridinium bromide

HRID 84337Notes

Reaction equation

HRID 84337 reaction equation
[Br:1][CH2:2][CH2:3][C:4]#[C:5][C:6]1[CH:11]=[CH:10][C:9]([CH2:12][CH2:13][CH2:14][CH3:15])=[CH:8][CH:7]=1.[N:16]1[CH:21]=[CH:20][C:19]([CH3:22])=[CH:18][CH:17]=1>C(#N)C>[Br-:1].[CH2:12]([C:9]1[CH:10]=[CH:11][C:6]([C:5]#[C:4][CH2:3][CH2:2][N+:16]2[CH:21]=[CH:20][C:19]([CH3:22])=[CH:18][CH:17]=2)=[CH:7][CH:8]=1)[CH2:13][CH2:14][CH3:15]

Participants

4

Reactant 2

HCID 79634-MethylpyridineHCID 593163501-(4-Bromo-but-1-ynyl)-4-butyl-benzene

Product 1

HCID 685923171-[4-(4-Butyl-phenyl)-but-3-ynyl]-4-methyl-pyridinium bromideYield 67%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

1-(4-Bromo-but-1-ynyl)-4-butyl-benzene (1 mmol) was added to a solution of 4-picoline (3 mmol) in acetonitrile, and the solution was refluxed for 24 hours. The acetonitrile was removed in vacuum, and the resulting residue was partitioned between ether and water. The aqueous layer was washed extensively with ether until no picoline was left in the aqueous layer. The resulting aqueous solution of the product was extracted with chloroform. The chloroform was removed to afford the product (67%). 1HNMR (300 MHz, CDCl3, ppm), 9.40 (d, J=6.9, 1H), 7.80 (d, 1H), 7.17 (d, J=7.8, 2H), 7.06 (d, J=7.8, 2H), 5.2 (t, 2H), 3.23 (t, 2H), 2.65 (s, 3H), 2.56 (t, J=7.8, 2H), 1.49-1.57 (m, 2H), 1.27-1.35 (m, 2H), 0.90 (t, J=7.5, 3H).

Workup

  1. temperaturethe solution was refluxed for 24 hours
  2. customThe acetonitrile was removed in vacuum
  3. customthe resulting residue was partitioned between ether and water
  4. washThe aqueous layer was washed extensively with ether until no picoline
  5. waitwas left in the aqueous layer
  6. extractionThe resulting aqueous solution of the product was extracted with chloroform
  7. customThe chloroform was removed

Sources & evidence

ORD record
ord-e387028ef2ed4d89a5c3881e7d83af35
Source dataset
uspto-grants-2014_09
Patent number
US08846937B2

Reaction notes

Loading…