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

HRID 889873Notes

Reaction equation

HRID 889873 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-2-yl}[(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 h 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-[2-methoxy-4-(trifluoromethoxy)phenyl]pyrazin-2-yl }[(4-methoxyphenyl) methyl]amine (920 mg), a yellow solid.

Workup

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

Sources & evidence

ORD record
ord-f73757087a46416699fffae4afe3d879
Source dataset
uspto-grants-2006_02
Patent number
US06995161B2

Reaction notes

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