Triethylamine → N-[5-(5,6-Dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-acetoxybenzoyl]-4-(1H-pyrazol-3-yl)aniline

HRID 1830419Notes

Reaction equation

HRID 1830419 reaction equation
[NH:1]1[CH:5]=[CH:4][C:3]([C:6]2[CH:12]=[CH:11][C:9]([NH2:10])=[CH:8][CH:7]=2)=[N:2]1.C(N(CC)CC)C.[Cl-].ClC1N(C)CC[NH+]1C.[CH3:29][O:30][C:31]1[C:32](=[O:55])[C:33]([CH3:54])=[C:34]([CH2:40][C:41]2[CH:42]=[CH:43][C:44]([O:50][C:51](=[O:53])[CH3:52])=[C:45]([CH:49]=2)[C:46](O)=[O:47])[C:35](=[O:39])[C:36]=1[O:37][CH3:38]>C(Cl)Cl>[CH3:29][O:30][C:31]1[C:32](=[O:55])[C:33]([CH3:54])=[C:34]([CH2:40][C:41]2[CH:42]=[CH:43][C:44]([O:50][C:51](=[O:53])[CH3:52])=[C:45]([CH:49]=2)[C:46]([NH:10][C:9]2[CH:11]=[CH:12][C:6]([C:3]3[CH:4]=[CH:5][NH:1][N:2]=3)=[CH:7][CH:8]=2)=[O:47])[C:35](=[O:39])[C:36]=1[O:37][CH3:38]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 109867151H-Imidazolium, 2-chloro-4,5-dihydro-1,3-dimethyl-, chlorideHCID 220542715-(5,6-Dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-acetoxybenzoic AcidHCID 178507410HCID 178507410, compound

Product 1

HCID 178493899N-[5-(5,6-Dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-acetoxybenzoyl]-4-(1H-pyrazol-3-yl)anilineYield 52.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

4-(1H-Pyrazol-3-yl)aniline (0.159 g, 1.003 mmol), triethylamine (0.101 g, 1.003 mmol) and 2-chloro-1,3-dimethylimidazolinium chloride (0.170 g, 1.003 mmol) were added to a methylene chloride solution (100 ml) of 5-(5,6-dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-acetoxybenzoic acid (0.250 g, 0.668 mmol) and the resulting solution was stirred at room temperature for 3 hours. The reaction solution was poured into ice water and then extracted with methylene chloride. The extract was washed with water and then dried, and the solvent was removed by distillation. The obtained residue was purified by preparative thin-layer chromatography (chloroform:methanol=10:1) to obtain the titled compound (0.180 g, 0.350 mmol, 52%).

Workup

  1. extractionextracted with methylene chloride
  2. washThe extract was washed with water
  3. customdried
  4. customthe solvent was removed by distillation
  5. customThe obtained residue was purified by preparative thin-layer chromatography (chloroform:methanol=10:1)

Sources & evidence

ORD record
ord-ec3005be37fe440eab35e237f495e898
Source dataset
uspto-grants-2006_06
Patent number
US07064124B2

Reaction notes

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