Acetic Anhydride → HCID 15407882, compound

HRID 2257377Notes

Reaction equation

HRID 2257377 reaction equation
[NH2:1][CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[N:10]([CH3:26])[C:11]([C:20]3[CH:25]=[CH:24][N:23]=[CH:22][CH:21]=3)=[C:12]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[N:13]=2)=[CH:5][CH:4]=1.[C:27](OC(=O)C)(=[O:29])[CH3:28]>N1C=CC=CC=1>[C:27]([NH:1][CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[N:10]([CH3:26])[C:11]([C:20]3[CH:21]=[CH:22][N:23]=[CH:24][CH:25]=3)=[C:12]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[N:13]=2)=[CH:5][CH:4]=1)(=[O:29])[CH3:28]

Participants

4

Reactant 2

HCID 7918Acetic AnhydrideHCID 9902528HCID 9902528, compound

Product 1

HCID 15407882HCID 15407882, compoundYield 29.1%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

To a solution of 2-(4-aminomethylphenyl)-1-methyl-4-phenyl-5-(4-pyridyl)imidazole (30 mg, 0.09 mmol) [See Ex. 4 above] in pyridine (3 mL) was added acetic anhydride (0.30 mL, 3.18 mmol). The resulting solution was stirred at rt for 30 min, then concentrated under reduced pressure. The residue was purified by flash chromatography, eluting with a solvent gradient of 0-2% MeOH/CHCl3. The isolated material was triturated with Et2O to provide an off-white solid (10 mg, 28%) which was recrystallized from EtOAc to provide the title compound: mp 210°-211° C.

Workup

  1. concentrationconcentrated under reduced pressure
  2. customThe residue was purified by flash chromatography
  3. washeluting with a solvent gradient of 0-2% MeOH/CHCl3
  4. customThe isolated material was triturated with Et2O

Sources & evidence

ORD record
ord-3a8e72474c9045718d72d8962fea7c6f
Source dataset
uspto-grants-1997_08
Patent number
US05656644

Reaction notes

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