Cesium carbonate → HCID 10160319, compound

HRID 1612054Notes

Reaction equation

HRID 1612054 reaction equation
[CH2:1]([N:8]1[C:20]2[CH:19]=[C:18]3[CH:21]=[CH:22][CH:23]=[CH:24][C:17]3=[C:16]([OH:25])[C:15]=2[C:14]2[C:13]([C:26]([NH2:28])=[O:27])=[CH:12][CH:11]=[CH:10][C:9]1=2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Br[CH2:30][C:31]([O:33][CH3:34])=[O:32].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.C(OCC)(=O)C>[CH2:1]([N:8]1[C:20]2[CH:19]=[C:18]3[CH:21]=[CH:22][CH:23]=[CH:24][C:17]3=[C:16]([O:25][CH2:30][C:31]([O:33][CH3:34])=[O:32])[C:15]=2[C:14]2[C:9]1=[CH:10][CH:11]=[CH:12][C:13]=2[C:26](=[O:27])[NH2:28])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 60984Methyl bromoacetateHCID 9925394HCID 9925394, compound

Product 1

HCID 10160319HCID 10160319, compoundYield 53.7%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

40% Methanolic Triton B (0.378 mL, 0.832 mM) was added to a solution of 5-benzyl-11-hydroxy-5H-benzo[b]carbazole-1-carboxylic acid amide, (0.235 g, 0.64 mM) in 5 mL DMF at room temperature. After 2 minutes, methyl bromoacetate (0.125 mL, 0.202 g, 1.28 mM) was added and the resultant mixture stirred at room temperature for 2 h. Cesium carbonate (0.105 g, 0.32 mM) was then added as a solid, and the mixture allowed to stir at room temperature for an additional 1 h. The mixture was diluted with ethyl acetate, washed with H2O, 1N HCl, saturated aqueous NaHCO3 solution, and saturated brine, dried over magnesium sulfate, filtered, and concentrated in vacuo. The resulting brown residue-was purified by column chromatography on silica gel (elution with ethyl acetate) to afford 0.151 g (53%) of the title compound (5-benzyl-1-carbamoyl-5H-benzo[b]carbazol-11-yloxy)-acetic acid, methyl ester as a brown foam (MP 120–125° C., MW 438.49).

Workup

  1. washwashed with H2O, 1N HCl, saturated aqueous NaHCO3 solution, and saturated brine
  2. dry with materialdried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe resulting brown residue-was purified by column chromatography on silica gel (elution with ethyl acetate)

Sources & evidence

ORD record
ord-e17db4ea114a465cb6bfaf6ce002011c
Source dataset
uspto-grants-2006_01
Patent number
US06992100B2

Reaction notes

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