Cesium carbonate → HCID 10297138, compound

HRID 1612063Notes

Reaction equation

HRID 1612063 reaction equation
[CH2:1]([N:8]1[C:20]2[CH:19]=[C:18]3[CH2:21][CH2:22][CH2:23][CH2:24][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[CH2:21][CH2:22][CH2:23][CH2:24][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:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 60984Methyl bromoacetateHCID 17972763HCID 17972763, compound

Product 1

HCID 10297138HCID 10297138, compoundYield 31.2%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

40% Methanolic Triton B (0.148 mL, 0.325 mM) was added to a solution of 5-benzyl-11-hydroxy-7,8,9,10-tetrahydro-5H-benzo[b]carbazole-1-carboxylic acid amide, (0.094 g, 0.25 mM) in 5 mL DMF at room temperature. After 2 minutes, methyl bromoacetate (0.049 mL, 0.076 g, 0.5 mM) was added and the resultant mixture stirred at room temperature for 2 h. Cesium carbonate (0.041 g, 0.125 mM) was then added as a solid, and the mixture allowed to stir at room temperature for an additional 2 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 tan foam was purified by column chromatography on silica gel (elution with ethyl acetate) to afford 0.035 g (31%) of the title compound (5-benzyl-1-carbamoyl-7,8,9,10-tetrahydro-5H-benzo[b]carbazol-11-yloxy)-acetic acid, methyl ester as a white solid (MP 174–177° C., MW 442.52).

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 tan foam was purified by column chromatography on silica gel (elution with ethyl acetate)

Sources & evidence

ORD record
ord-adedafb914f04d359ef401be8f01b418
Source dataset
uspto-grants-2006_01
Patent number
US06992100B2

Reaction notes

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