Dimethylformamide → 4-(2-Fluoro-4-iodo-phenylamino)-1-methyl-5-(5-oxo-4,5-dihydro-[1,3,4]oxadiazol-2-yl)-1H-pyridin-2-one

HRID 917783Notes

Reaction equation

HRID 917783 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([I:8])[CH:5]=[CH:4][C:3]=1[NH:9][C:10]1[C:11]([C:18]([NH:20][NH2:21])=[O:19])=[CH:12][N:13]([CH3:17])[C:14](=[O:16])[CH:15]=1.CN([CH:25]=[O:26])C>>[F:1][C:2]1[CH:7]=[C:6]([I:8])[CH:5]=[CH:4][C:3]=1[NH:9][C:10]1[C:11]([C:18]2[O:19][C:25](=[O:26])[NH:21][N:20]=2)=[CH:12][N:13]([CH3:17])[C:14](=[O:16])[CH:15]=1

Participants

3

Reactant 2

HCID 6228DimethylformamideHCID 112350284-(2-Fluoro-4-iodo-phenylamino)-1-methyl-6-oxo-1,6-dihydro-pyridine-3-carboxylic acid hydrazide

Product 1

HCID 589628444-(2-Fluoro-4-iodo-phenylamino)-1-methyl-5-(5-oxo-4,5-dihydro-[1,3,4]oxadiazol-2-yl)-1H-pyridin-2-one

Procedure

4-(2-Fluoro-4-iodo-phenylamino)-1-methyl-6-oxo-1,6-dihydro-pyridine-3-carboxylic acid hydrazide was dissolved in DMF (20 mL) and treated with the 1,1′-carbonydiimidazole (2.90 g, 17.92 mmol). The mixture was stirred at room temperature for 24 hours. The solid was precipitate out. This material was isolated by filtration, washed well with water and hexanes, then dried to afford 4-(2-Fluoro-4-iodo-phenylamino)-1-methyl-5-(5-oxo-4,5-dihydro-[1,3,4]oxadiazol-2-yl)-1H-pyridin-2-one as an off white solid (5.0 g, 71%). (APCI+) calcd for C14H10FIN4O3 428.16 (M+1), found 428.9. Anal. Calcd for C14H10FIN4O3: C, 39.27; H, 2.35; N, 13.09. Found: C, 39.55; H, 2.88; N, 13.12.

Workup

  1. additiontreated with the 1,1′-carbonydiimidazole (2.90 g, 17.92 mmol)
  2. customThe solid was precipitate out
  3. customThis material was isolated by filtration
  4. washwashed well with water and hexanes
  5. customdried

Sources & evidence

ORD record
ord-76219ae72a9141b88af04a13ff925cff
Source dataset
uspto-grants-2007_09
Patent number
US07273877B2

Reaction notes

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