1-Bromopentane → HCID 70981985, compound

HRID 922607Notes

Reaction equation

HRID 922607 reaction equation
[Cl:1][C:2]1[N:3]=[CH:4][NH:5][C:6]=1[Cl:7].[OH-].[K+].[Br:10][CH2:11][CH2:12][CH2:13][CH2:14][CH3:15].[K+].[Br-].Br[CH2:19][C:20]1[CH:29]=[CH:28][C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[CH:21]=1>C(#N)C>[Br-:10].[CH2:11]([C:28]1[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[CH:21]=[C:20]([CH3:19])[C:29]=1[N+:3]1[C:2]([Cl:1])=[C:6]([Cl:7])[NH:5][CH:4]=1)[CH2:12][CH2:13][CH2:14][CH3:15]

Participants

7

Reactant 5

HCID 80571-BromopentaneHCID 14797Potassium HydroxideHCID 703202-BromomethylnaphthaleneHCID 1400184,5-DichloroimidazoleHCID 253877Potassium Bromide

Product 1

HCID 70981985HCID 70981985, compoundYield 49%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

4,5-Dichloroimidazole (1.23 g, 9 mmol) was dissolved into 27 mL of acetonitrile. Potassium hydroxide (0.61 g, 9.9 mmol) was added and the mixture was allowed to stir for 0.5 h. 1-bromopentane (1.1 mL, 9 mmol) was added and the solution was allowed to reflux overnight. The solution was filtered hot to remove a white precipitate (presumed to be KBr) and 2-bromomethylnaphthalene (1.98 g, 9 mmol) was added and the mixture was returned to reflux overnight. The mixture was then allowed to cool to room temperature, resulting in a yellow precipitate (1.793, 49% yield). 1H NMR (500 MHz, DMSO-d6) 9.66 (1H, s, NCHN), 8.02 (4H, m, Ar), 7.57 (3H, m, Ar), 5.66 (2H, s, NCH2), 4.24 (2H, t, NCH2), 1.80 (2H, tt, CH2), 1.37 (2H, tq, CH2), 0.93 (3H, t, CH3). 13C{1H} NMR (125 MHz, DMSO-d6) 136.4 (NCN), 132.8 (Ar), 132.6 (Ar), 130.0 (Ar), 128.8 (Ar), 127.8 (Ar), 127.7 (Ar), 127.6 (Ar), 126.8 (Ar), 126.7 (Ar), 125.5 (Ar), 120.9 (Ar), 114.1 (Ar), 112.9 (Ar), 51.6 (CH2), 48.5 (CH2), 27.8 (CH2), 27.4 (CH2), 21.4 (CH2), 13.6 (CH3).

Workup

  1. temperatureto reflux overnight
  2. filtrationThe solution was filtered hot
  3. additionwas added
  4. temperatureto reflux overnight
  5. customresulting in a yellow precipitate (1.793, 49% yield)

Sources & evidence

ORD record
ord-69e4b70dbd614e1cb6d0707705f89bfe
Source dataset
uspto-grants-2016_03
Patent number
US09278951B2

Reaction notes

Loading…