3-Methylpyridine → 3-Methyl-1-(8-phenyl-octyl)-pyridinium bromide

HRID 84317

Reaction equation

HRID 84317 reaction equation
[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.[N:16]1[CH:21]=[CH:20][CH:19]=[C:18]([CH3:22])[CH:17]=1>C(#N)C>[Br-:1].[CH3:22][C:18]1[CH:17]=[N+:16]([CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH:21]=[CH:20][CH:19]=1

Participants

4

Reactant 2

HCID 79703-MethylpyridineHCID 563758(8-Bromooctyl)benzene

Product 1

HCID 247811053-Methyl-1-(8-phenyl-octyl)-pyridinium bromideYield 76%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

(8-Bromo-octyl)-benzene (1 mmol) was added to a solution of 3-picoline (3 mmol) in acetonitrile, and the solution refluxed for 24 hours. The acetonitrile was removed in a 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 (76%). 1HNMR (300 MHz, CDCl3, ppm) 9.40 (s, 1H), 9.22 (d, 1H), 8.02 (d, 1H), 7.96 (dd, 1H), 7.12-7.22 (dd, 4H), 4.94 (t, 2H), 2.62 (s, 3H), 2.56 (t, 2H), 1.94-2.04 (m, 2H), 1.50-1.60 (m, 2H), 1.20-1.40 (br, 8H). 13CNMR, 145.68, 144.65, 142.87, 142.37, 139.79, 128.55, 128.40, 127.89, 125.76, 62.20, 36.19, 32.29, 31.73, 29.53, 29.44, 29.33, 26.40, 19.11.

Workup

  1. temperaturethe solution refluxed for 24 hours
  2. customThe acetonitrile was removed in a 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-a965aae1bccb46a0be0204f2cd58c0ab
Source dataset
uspto-grants-2014_09
Patent number
US08846937B2

Linked notes

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