Ethyl Acetate → HCID 67110900, compound

HRID 2077241Notes

Reaction equation

HRID 2077241 reaction equation
[CH3:1][C:2]1[O:3][C:4]2[CH:10]=[C:9]([OH:11])[CH:8]=[CH:7][C:5]=2[N:6]=1.[CH2:12]([O:14][C:15](=[O:17])[CH3:16])[CH3:13].[C:18](=[O:21])([O-])[O-].[K+].[K+].[CH3:24][C:25]([N:27](C)C)=[O:26]>>[CH2:12]([O:14][C:15](=[O:17])[CH2:16][N:27]1[C:25](=[O:26])[C:24]2[C:7](=[CH:5][CH:4]=[C:10]([O:11][C:9]3[CH:8]=[CH:7][C:5]4[N:6]=[C:2]([CH3:1])[O:3][C:4]=4[CH:10]=3)[CH:9]=2)[C:18]1=[O:21])[CH3:13]

Participants

5

Reactant 4

HCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 31374DimethylacetamideHCID 6765042-Methyl-1,3-benzoxazol-6-ol

Product 1

HCID 67110900HCID 67110900, compound

Conditions

Temperature
105 °C

Procedure

A mixture of 2-methyl-benzooxazol-6-ol (8.41 g, 56 mmol), 5-nitro-1,3-dioxo-1,3-dihydro-isoindol-2-yl)-acetic acid ethyl ester (17.23 g, 62 mmol), potassium carbonate (9.36 g, 67.7 mmol), and dimethylacetamide (120 mL) was stirred at 105° C. for twenty hours before it was cooled to room temperature and partitioned between chloroform and water. The organic layer was dried over anhydrous sodium sulfate, concentrated in vacuo and the residue was purified by flash column chromatography on silica gel with a gradient of ethyl acetate and dichloromethane to give the title compound as a yellow solid (9.18 g): MS: (+) m/z 381.27 (M+1).

Workup

  1. temperaturewas cooled to room temperature
  2. custompartitioned between chloroform and water
  3. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customthe residue was purified by flash column chromatography on silica gel with a gradient of ethyl acetate and dichloromethane

Sources & evidence

ORD record
ord-c57587397b1748afbe3b0796bcc70682
Source dataset
uspto-grants-2011_04
Patent number
US07928120B2

Reaction notes

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