Water → 2-[Methyl-(5,6,7,8-tetrahydro-naphthalene-1-carbonyl)-amino]-indan-2-carboxylic acid

HRID 1047762Notes

Reaction equation

HRID 1047762 reaction equation
C([O:3][C:4]([C:6]1([N:15]([CH3:28])[C:16]([C:18]2[C:27]3[CH2:26][CH2:25][CH2:24][CH2:23][C:22]=3[CH:21]=[CH:20][CH:19]=2)=[O:17])[CH2:14][C:13]2[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=2)[CH2:7]1)=[O:5])C.[OH-].[K+].O>CCO>[CH3:28][N:15]([C:16]([C:18]1[C:27]2[CH2:26][CH2:25][CH2:24][CH2:23][C:22]=2[CH:21]=[CH:20][CH:19]=1)=[O:17])[C:6]1([C:4]([OH:5])=[O:3])[CH2:7][C:8]2[C:13](=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH2:14]1

Participants

5

Reactant 3

HCID 962WaterHCID 14797Potassium HydroxideHCID 593141972-[Methyl-(5,6,7,8-tetrahydro-naphthalene-1-carbonyl)-amino]-indan-2-carboxylic acid ethyl ester

Product 1

HCID 593141322-[Methyl-(5,6,7,8-tetrahydro-naphthalene-1-carbonyl)-amino]-indan-2-carboxylic acidYield 72%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

The mixture of 2-[methyl-(5,6,7,8-tetrahydro-naphthalene-1-carbonyl)-amino]-indan-2-carboxylic acid ethyl ester (120) (226 mg, 0.60 mmol) and KOH (600 mg, 10.7 mmol) is dissolved in EtOH (5 mL) and water (0.5 mL) under a water bath. The water bath is removed when KOH is completely dissolved and the resulting reaction solution is stirred at RT for 8 h. After concentration in vacuo, the residue is dissolved in water (20 mL) and acidified with conc. HCl until pH˜3. The precipitate is filtered to give a pure product (121) as a pale orange solid (150 mg, 72%).

Workup

  1. customThe water bath is removed when KOH
  2. dissolutionis completely dissolved
  3. customthe resulting reaction solution
  4. concentrationAfter concentration in vacuo
  5. dissolutionthe residue is dissolved in water (20 mL)
  6. filtrationThe precipitate is filtered

Sources & evidence

ORD record
ord-c6c0d4626f4d49ab9efce6475bdeab13
Source dataset
uspto-grants-2013_10
Patent number
US08569535B2

Reaction notes

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