p-Aminophenylacetic acid ethyl ester → Ethyl (4-{4-(ethyloxy)-1,3-dioxo-9-[(phenylmethyl)oxy]-1,3-dihydro-2H-benzo[f]isoindol-2-yl}phenyl)acetate

HRID 222432Notes

Reaction equation

HRID 222432 reaction equation
[CH2:1]([O:3][C:4]1[C:13]2[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=2)[C:7]([O:14][CH2:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)=[C:6]([C:22](O)=[O:23])[C:5]=1[C:25](O)=[O:26])[CH3:2].[CH2:28]([O:30][C:31](=[O:40])[CH2:32][C:33]1[CH:38]=[CH:37][C:36]([NH2:39])=[CH:35][CH:34]=1)[CH3:29]>C(O)(=O)C.[Cl-].[Na+].O>[CH2:28]([O:30][C:31](=[O:40])[CH2:32][C:33]1[CH:34]=[CH:35][C:36]([N:39]2[C:22](=[O:23])[C:6]3[C:7]([O:14][CH2:15][C:16]4[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=4)=[C:8]4[CH:9]=[CH:10][CH:11]=[CH:12][C:13]4=[C:4]([O:3][CH2:1][CH3:2])[C:5]=3[C:25]2=[O:26])=[CH:37][CH:38]=1)[CH3:29]

Participants

5

Reactant 2

HCID 225219p-Aminophenylacetic acid ethyl esterHCID 580124801-(Ethyloxy)-4-[(phenylmethyl)oxy]-2,3-naphthalenedicarboxylic acid

Product 1

HCID 58017612Ethyl (4-{4-(ethyloxy)-1,3-dioxo-9-[(phenylmethyl)oxy]-1,3-dihydro-2H-benzo[f]isoindol-2-yl}phenyl)acetateYield 74.2%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

A mixture of 1-(ethyloxy)-4-[(phenylmethyl)oxy]-2,3-naphthalenedicarboxylic acid (2.55 g, 6.97 mmol) and ethyl(4-aminophenyl)acetate (2.49 g, 13.9 mmol) were heated to 120° C. in acetic acid (20 ml) for 18 hours. The reaction mixture was diluted with brine and extracted with ethyl acetate twice. Combined organics were washed with water then dried over magnesium sulphate, the solvent evaporated to give a brown oil. This was purified by chromatography on silica gel, eluting with ethyl acetate (0-30%) in hexane to give the title compound as a peach coloured solid (2.63 g, 5.17 mmol). LC/MS: Rt=3.95, [MH]+ 510.

Workup

  1. extractionextracted with ethyl acetate twice
  2. washCombined organics were washed with water
  3. dry with materialthen dried over magnesium sulphate
  4. customthe solvent evaporated
  5. customto give a brown oil
  6. customThis was purified by chromatography on silica gel
  7. washeluting with ethyl acetate (0-30%) in hexane

Sources & evidence

ORD record
ord-b1428b02837a464a93fa45c270bb4bce
Source dataset
uspto-grants-2012_06
Patent number
US08207213B2

Reaction notes

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