Hydrochloric Acid → HCID 22175188, compound

HRID 1797542Notes

Reaction equation

HRID 1797542 reaction equation
[CH2:1]([O:8][C:9]1[CH:10]=[C:11]2[C:16](=[CH:17][CH:18]=1)[C:15](=[O:19])[N:14]([CH2:20][CH:21]([CH3:23])[CH3:22])[C:13]([C:24]([O:26]C)=[O:25])=[C:12]2[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=1[F:34])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.O.[OH-].[Li+].O.Cl>CO>[CH2:1]([O:8][C:9]1[CH:10]=[C:11]2[C:16](=[CH:17][CH:18]=1)[C:15](=[O:19])[N:14]([CH2:20][CH:21]([CH3:23])[CH3:22])[C:13]([C:24]([OH:26])=[O:25])=[C:12]2[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=1[F:34])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 168937Lithium hydroxide, monohydrateHCID 22175279HCID 22175279, compound

Product 1

HCID 22175188HCID 22175188, compoundYield 93.2%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of methyl 6-benzyloxy-4-(2-fluorophenyl)-2-isobutyl-1-oxo-1,2-dihydro-3-isoquinolinecarboxylate (0.46 g, 1 mmol) in methanol (30 mL) was added an aqueous solution (3 mL) of lithium hydroxide monohydrate (0.42 g, 10 mmol). The obtained mixture was refluxed under heating for 12 h. The reaction mixture was poured into water, acidified with 1N hydrochloric acid and extracted with ethyl acetate. The extract was washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The obtained crystals were recrystallized from ethyl acetate-diisopropyl ether to give 6-benzyloxy-4-(2-fluorophenyl)-2-isobutyl-1-oxo-1,2-dihydro-3-isoquinolinecarboxylic acid (0.41 g, 93.2%) as crystals.

Workup

  1. temperatureThe obtained mixture was refluxed
  2. temperatureunder heating for 12 h
  3. extractionextracted with ethyl acetate
  4. washThe extract was washed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe obtained crystals were recrystallized from ethyl acetate-diisopropyl ether

Sources & evidence

ORD record
ord-50d8c6c30f6c494faf9a82c13ee0c8bd
Source dataset
uspto-grants-2006_04
Patent number
US07034039B2

Reaction notes

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