N-bromobutanimide → {3-Bromo-6-methoxy-5-[2-methoxy-4-(trifluoromethoxy)phenyl]pyrazin-2-yl} [(4-methoxyphenyl)methyl]amine

HRID 349182Notes

Reaction equation

HRID 349182 reaction equation
[CH3:1][O:2][C:3]1[N:8]=[C:7]([NH:9][CH2:10][C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[CH:6]=[N:5][C:4]=1[C:19]1[CH:24]=[CH:23][C:22]([O:25][C:26]([F:29])([F:28])[F:27])=[CH:21][C:20]=1[O:30][CH3:31].[Br:32]N1C(=O)CCC1=O>C(Cl)(Cl)Cl>[Br:32][C:6]1[C:7]([NH:9][CH2:10][C:11]2[CH:12]=[CH:13][C:14]([O:17][CH3:18])=[CH:15][CH:16]=2)=[N:8][C:3]([O:2][CH3:1])=[C:4]([C:19]2[CH:24]=[CH:23][C:22]([O:25][C:26]([F:27])([F:29])[F:28])=[CH:21][C:20]=2[O:30][CH3:31])[N:5]=1

Participants

4

Reactant 2

HCID 67184N-bromobutanimideHCID 22249073{6-Methoxy-5-[2-methoxy-4-(trifluoromethoxy)phenyl]pyrazin-2-yl}[(4-methoxyphenyl)methyl]amine

Product 1

HCID 23594996{3-Bromo-6-methoxy-5-[2-methoxy-4-(trifluoromethoxy)phenyl]pyrazin-2-yl} [(4-methoxyphenyl)methyl]amineYield 89.4%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

A solution of {6-methoxy-5-[2-methoxy-4-(trifluoromethoxy)phenyl]pyrazin-2yl}[(4-methoxyphenyl)methyl]amine (870 mg, 2.0 mmol) in chloroform (10 mL) is cooled to 0 C and N-bromosuccinimide (356 mg, 2.0 mmol) is added in portions. After the addition, the mixture is further stirred for 1 hour while being allowed to warm to room temperature. The mixture is washed with saturated aqueous sodium bicarbonate, aqueous sodium chloride, dried (magnesium sulfate), filtered, and evaporated to give {3-bromo-6-methoxy-5-[2methoxy-4-(trifluoromethoxy)phenyl]pyrazin-2-yl} [(4-methoxyphenyl)methyl]amine (920 mg), a yellow solid.

Workup

  1. additionis added in portions
  2. additionAfter the addition
  3. washThe mixture is washed with saturated aqueous sodium bicarbonate, aqueous sodium chloride
  4. dry with materialdried (magnesium sulfate)
  5. filtrationfiltered
  6. customevaporated

Sources & evidence

ORD record
ord-0257432c0b454210ac7c013aaca32217
Source dataset
uspto-grants-2007_02
Patent number
US07179807B2

Reaction notes

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