tert-Butyl bromoacetate → {9-[(3-Phenoxyphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, tert-butyl ester

HRID 567278Notes

Reaction equation

HRID 567278 reaction equation
[O:1]([C:8]1[CH:9]=[C:10]([CH2:14][N:15]2[C:27]3[CH:26]=[CH:25][CH:24]=[C:23]([OH:28])[C:22]=3[C:21]3[C:16]2=[CH:17][CH:18]=[CH:19][C:20]=3[C:29](=[O:31])[NH2:30])[CH:11]=[CH:12][CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Br[CH2:33][C:34]([O:36][C:37]([CH3:40])([CH3:39])[CH3:38])=[O:35]>CN(C=O)C.C(OCC)(=O)C>[O:1]([C:8]1[CH:9]=[C:10]([CH2:14][N:15]2[C:27]3[CH:26]=[CH:25][CH:24]=[C:23]([O:28][CH2:33][C:34]([O:36][C:37]([CH3:40])([CH3:39])[CH3:38])=[O:35])[C:22]=3[C:21]3[C:16]2=[CH:17][CH:18]=[CH:19][C:20]=3[C:29](=[O:31])[NH2:30])[CH:11]=[CH:12][CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 2

HCID 79177tert-Butyl bromoacetateHCID 227407659-[(3-Phenoxyphenyl)methyl]-4-hydroxy-5-carbamoyl carbazole

Product 1

HCID 86756262{9-[(3-Phenoxyphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, tert-butyl esterYield 65.3%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

40% Methanolic Triton B (0.054 mL, 0.12 mM) was added to a solution of the 9-[(3-phenoxyphenyl)methyl]-4-hydroxy-5-carbamoyl carbazole (39.5 mg, 0.10 mM) in 3 mL DMF at room temperature. After 3 minutes, t-butyl bromoacetate (54.8 mg, 0.27 mM) was added and the resultant mixture stirred at room temperature for 5 hours. The mixture was diluted with ethyl acetate, washed four times with H2O, once with saturated brine, dried over magnesium sulfate, filtered, and concentrated. The residue was purified by column chromatography on silica gel (elution with gradient methylene chloride/ethyl acetate) to afford 33.0 mg (65%) of the {9-[(3-phenoxyphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, tert-butyl ester as a white solid. 1H NMR (DMSO-d6) δ 7.6 (d, 1H, J=8 Hz), 7.5-6.8 (m, 15H), 6.55 (d, 1H, J=8 Hz), 5.7 (s, 2H), 4.8 (s, 2H), and 1.45 (s, 9H). IR (KBr, cm−1) 3450, 1748, 1670, 1582, 1486, 1246, 1225, and 1151. MS (ES) m/e 523.

Workup

  1. washwashed four times with H2O
  2. dry with materialonce with saturated brine, dried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography on silica gel (elution with gradient methylene chloride/ethyl acetate)

Sources & evidence

ORD record
ord-4e8e2dba4fc546868567b421fb1ae28d
Source dataset
uspto-grants-2001_01
Patent number
US06177440B1

Reaction notes

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