Methylamine → 3,4-Dimethoxy-N-methyl-5-nitrobenzamide

HRID 42668Notes

Reaction equation

HRID 42668 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:9]=[C:10]([N+:14]([O-:16])=[O:15])[C:11]=1[O:12][CH3:13])[C:6](Cl)=[O:7].[CH3:17][NH2:18]>ClCCl>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:9]=[C:10]([N+:14]([O-:16])=[O:15])[C:11]=1[O:12][CH3:13])[C:6]([NH:18][CH3:17])=[O:7]

Participants

4

Reactant 2

HCID 6329MethylamineHCID 219286153,4-Dimethoxy-5-nitrobenzoyl chloride

Product 1

HCID 670370593,4-Dimethoxy-N-methyl-5-nitrobenzamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a stirred solution of 3,4-dimethoxy-5-nitro-benzoyl chloride (0.50 g, 2.04 mmol) in dichloromethane (10 mL) at 0° C., was added dropwise methylamine (1.02 mL, 2.04 mmol, 2 M in THF). The reaction mixture was stirred at room temperature till all starting material disappeared, then diluted with dichloromethane and washed with water. The organic phase was dried over anhydrous magnesium sulphate, filtered and evaporated to dryness to leave a crude residue that was recrystallised from a dichloromethane/isopropanol mixture to afford 3,4-dimethoxy-N-methyl-5-nitro-benzamide, 0.44 g (89%).

Workup

  1. washwashed with water
  2. dry with materialThe organic phase was dried over anhydrous magnesium sulphate
  3. filtrationfiltered
  4. customevaporated to dryness
  5. customto leave a crude residue that
  6. customwas recrystallised from a dichloromethane/isopropanol mixture

Sources & evidence

ORD record
ord-455a05bf8ee44cd499497054cc30d7a4
Source dataset
uspto-grants-2013_09
Patent number
US08536203B2

Reaction notes

Loading…