Benzoyl Peroxide → 2-(1-Bromoethyl)pyridine

HRID 1806018Notes

Reaction equation

HRID 1806018 reaction equation
[CH2:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][N:4]=1)[CH3:2].C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1.[Br:27]N1C(=O)CCC1=O>C(Cl)(Cl)(Cl)Cl>[Br:27][CH:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][N:4]=1)[CH3:2]

Participants

5

Reactant 3

HCID 7187Benzoyl PeroxideHCID 75232-EthylpyridineHCID 67184N-bromobutanimide

Product 1

HCID 153736572-(1-Bromoethyl)pyridineYield 49.9%

Reagents, catalysts & solvents 1

HCID 5943Carbon TetrachlorideSolvent

Procedure

2-Ethylpyridine (20.0 g, 186.65 mmol) was placed in carbon tetrachloride (830 mL) and benzoyl peroxide (4.5211 g, 18.665 mmol) and 1-bromopyrrolidine-2,5-dione (33.221 g, 186.65 mmol) were added. The reaction mixture was heated to reflux for 18 hours, then cooled to room temperature and filtered. The filtrate was concentrated and the residue was purified over a plug of silica to give 2-(1-bromoethyl)pyridine (17.312 g, 49.9%). 1H NMR (CDCl3) δ 8.58 (d, 1H), 7.69 (td, 1H), 7.76 (d, 1H), 7.20 (dd, 1H), 5.24 (q, 1H), 2.08 (d, 3H)

Workup

  1. temperatureThe reaction mixture was heated
  2. temperatureto reflux for 18 hours
  3. filtrationfiltered
  4. concentrationThe filtrate was concentrated
  5. customthe residue was purified over a plug of silica

Sources & evidence

ORD record
ord-b9febb3c3fa249a2a11c2718815040a8
Source dataset
uspto-grants-2013_01
Patent number
US08354540B2

Reaction notes

Loading…