1-Methylpiperazine → 1-Methyl-4-(5-nitro-2-pentafluoroethyl-benzyl)-piperazine

HRID 238460Notes

Reaction equation

HRID 238460 reaction equation
Br[CH2:2][C:3]1[CH:8]=[C:7]([N+:9]([O-:11])=[O:10])[CH:6]=[CH:5][C:4]=1[C:12]([F:18])([F:17])[C:13]([F:16])([F:15])[F:14].[CH3:19][N:20]1[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]1>>[CH3:19][N:20]1[CH2:25][CH2:24][N:23]([CH2:2][C:3]2[CH:8]=[C:7]([N+:9]([O-:11])=[O:10])[CH:6]=[CH:5][C:4]=2[C:12]([F:18])([F:17])[C:13]([F:16])([F:15])[F:14])[CH2:22][CH2:21]1

Participants

3

Reactant 2

HCID 531671-MethylpiperazineHCID 219593672-Bromomethyl-4-nitro-1-pentafluoroethyl-benzene

Product 1

HCID 222492671-Methyl-4-(5-nitro-2-pentafluoroethyl-benzyl)-piperazine

Procedure

2-Bromomethyl-4-nitro-1-pentafluoroethyl-benzene (2.6 g) was added to N-methylpiperazine (5 ml) and stirred at RT for 3 h. The mixture was filtered and the filtrate was treated with 1-chlorobutane, extracted with 2N HCl (100 ml). The acidic solution was treated with 5N NaOH (6 ml) then extracted with EtOAc. The organic layer was removed, dried over MgSO4 and concentrated to give the compound as an oil.

Workup

  1. filtrationThe mixture was filtered
  2. additionthe filtrate was treated with 1-chlorobutane
  3. extractionextracted with 2N HCl (100 ml)
  4. additionThe acidic solution was treated with 5N NaOH (6 ml)
  5. extractionthen extracted with EtOAc
  6. customThe organic layer was removed
  7. dry with materialdried over MgSO4
  8. concentrationconcentrated

Sources & evidence

ORD record
ord-735cf649371245afb38e8578bf47715e
Source dataset
uspto-grants-2014_02
Patent number
US08642624B2

Reaction notes

Loading…