Methanesulfonic acid (5R)-3-(3-fluoro-4-iodo-phenyl)-2-oxo-oxazolidin-5-ylmethyl ester → (5R)-2-[3-(3-fluoro-4-iodo-phenyl)-2-oxo-oxazolidin-5-ylmethyl]-isoindole-1,3-dione

HRID 1247481Notes

Reaction equation

HRID 1247481 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([N:9]2[CH2:13][C@H:12]([CH2:14]OS(C)(=O)=O)[O:11][C:10]2=[O:20])[CH:5]=[CH:6][C:7]=1[I:8].[C:21]1(=[O:31])[NH:25][C:24](=[O:26])[C:23]2=[CH:27][CH:28]=[CH:29][CH:30]=[C:22]12.[K]>CN(C)C=O>[F:1][C:2]1[CH:3]=[C:4]([N:9]2[CH2:13][C@@H:12]([CH2:14][N:25]3[C:21](=[O:31])[C:22]4[C:23](=[CH:27][CH:28]=[CH:29][CH:30]=4)[C:24]3=[O:26])[O:11][C:10]2=[O:20])[CH:5]=[CH:6][C:7]=1[I:8]

Participants

4

Reactant 2

HCID 23624705Methanesulfonic acid (5R)-3-(3-fluoro-4-iodo-phenyl)-2-oxo-oxazolidin-5-ylmethyl esterHCID 24194345Phthalimide potassium salt

Product 1

HCID 66884332(5R)-2-[3-(3-fluoro-4-iodo-phenyl)-2-oxo-oxazolidin-5-ylmethyl]-isoindole-1,3-dioneYield 94%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
70 °C

Procedure

A solution of mesylate 94 (26.38 g, 63.57 mmol) in anhydrous N,N-dimethylformamide (DMF, 120 mL) was treated with solid potassium phthalimide (12.95 g, 70.0 mmol, 1.1 equiv) at 25° C., and the resulting reaction mixture was warmed to 70° C. for 2 h. When TLC and HPLC showed the reaction was complete, the reaction mixture was cooled to room temperature before being quenched with H2O (400 mL). The resulting mixture was stirred at room temperature for 10 min before being cooled to 0–5° C. for 1 h. The white precipitate was collected by filtration, washed with water (3×100 mL), and dried in vacuo to afford the desired (5R)-2-[3-(3-fluoro-4-iodo-phenyl)-2-oxo-oxazolidin-5-ylmethyl]-isoindole-1,3-dione (phthalimide 95, 27.85 g, 94%) as an off-white powder. This product was directly used in subsequent reactions without further purification. C18H12FIN2O4, LCMS (EI) m/e 467 (M++H).

Workup

  1. customthe resulting reaction mixture
  2. temperaturethe reaction mixture was cooled to room temperature
  3. custombefore being quenched with H2O (400 mL)
  4. temperaturebefore being cooled to 0–5° C. for 1 h
  5. filtrationThe white precipitate was collected by filtration
  6. washwashed with water (3×100 mL)
  7. customdried in vacuo

Sources & evidence

ORD record
ord-94564317d4c142f4b30ce744743fe4a3
Source dataset
uspto-grants-2006_10
Patent number
US07129259B2

Reaction notes

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