Dicyclohexylcarbodiimide → 2,5-Dioxopyrrolidin-1-yl 2-(2-fluoro-4-iodophenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylate

HRID 1186762Notes

Reaction equation

HRID 1186762 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[N:11]([CH3:21])[C:12](=[O:20])[C:13]([CH3:19])=[CH:14][C:15]=1[C:16]([OH:18])=[O:17].O[N:23]1[C:27](=[O:28])[CH2:26][CH2:25][C:24]1=[O:29].C1CCC(N=C=NC2CCCCC2)CC1>O1CCOCC1>[F:1][C:2]1[CH:7]=[C:6]([I:8])[CH:5]=[CH:4][C:3]=1[NH:9][C:10]1[N:11]([CH3:21])[C:12](=[O:20])[C:13]([CH3:19])=[CH:14][C:15]=1[C:16]([O:18][N:23]1[C:27](=[O:28])[CH2:26][CH2:25][C:24]1=[O:29])=[O:17]

Participants

5

Reactant 3

HCID 10868DicyclohexylcarbodiimideHCID 80170N-HydroxysuccinimideHCID 441892192-(2-Fluoro-4-iodophenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid

Product 1

HCID 866645042,5-Dioxopyrrolidin-1-yl 2-(2-fluoro-4-iodophenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylateYield 85%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A 250 ml round-bottom flask was charged with 2-(2-fluoro-4-iodophenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid (2.0 g, 5.00 mmol) and dioxane (100 mL). To the resulting suspension was added 1-hydroxypyrrolidine-2,5-dione (0.63 g, 5.5 mmol) and DCC (0.63 g, 5.5 mmol). The reaction mixture was stirred at room temperature for 16 hours and filtered. The residue was concentrated under reduced pressure and purified by flash chromatography (Biotage system) using a gradient of EtOAc (0-50%) in hexane to afford the title product (2.1 g, 85%).

Workup

  1. filtrationfiltered
  2. concentrationThe residue was concentrated under reduced pressure
  3. custompurified by flash chromatography (Biotage system)

Sources & evidence

ORD record
ord-611ae8c4b43c4694beb6615e0e1f7a00
Source dataset
uspto-grants-2014_03
Patent number
US08673919B2

Reaction notes

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