2-Oxazolidinone → HCID 68758456, compound

HRID 2098214Notes

Reaction equation

HRID 2098214 reaction equation
CC(C)([O-])C.[K+].[O:7]1[CH2:11][CH2:10][NH:9][C:8]1=[O:12].Cl[C:14]1[S:15][CH:16]=[CH:17][C:18]=1[N+:19]([O-:21])=[O:20]>CN(C=O)C.[Cl-].[Na+].O>[N+:19]([C:18]1[CH:17]=[CH:16][S:15][C:14]=1[N:9]1[CH2:10][CH2:11][O:7][C:8]1=[O:12])([O-:21])=[O:20]

Participants

6

Reactant 3

HCID 739492-OxazolidinoneHCID 2201862-Chloro-3-nitrothiopheneHCID 23665647Potassium tert-butoxide

Product 1

HCID 68758456HCID 68758456, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

Potassium tert-butoxide (1.86 g, 16.6 mmol) and oxazolidin-2-one (1.90 g, 21.8 mmol) in DMF (50 ml) was stirred for 30 min. 2-chloro-3-nitrothiophene (1.64 g, 10.0 mmol) was added and after 1 h, the solution was placed into a preheated oil bath at 100° C. After stirring for 1 h, the solution was diluted with brine and extracted with diethyl ether. The combined organic extracts were dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was flash chromatographed with 9:1, 4:1, 7:3, 3:2, and 1:1 hexane:ethyl acetate as the eluant to yield impure 3-(3-nitrothiophen-2-yl)oxazolidin-2-one. Method [3] Retention time 2.50 min by HPLC (MH+ 215) and (M+Na=237).

Workup

  1. customthe solution was placed into a preheated oil bath at 100° C
  2. extractionextracted with diethyl ether
  3. dry with materialThe combined organic extracts were dried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customchromatographed with 9:1, 4:1, 7:3, 3:2, and 1:1 hexane

Sources & evidence

ORD record
ord-20820ea24b1d48908b8446be720d2e4e
Source dataset
uspto-grants-2013_05
Patent number
US08450363B2

Reaction notes

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