Hydrochloric Acid → HCID 22175341, compound

HRID 1797463Notes

Reaction equation

HRID 1797463 reaction equation
[CH2:1]([O:5][C:6]1[C:15]2[C:10](=[CH:11][C:12]([F:16])=[CH:13][CH:14]=2)[C:9](=[O:17])[N:8]([CH2:18][C:19]([CH3:22])([CH3:21])[CH3:20])[C:7]=1[C:23]([O-:25])=[O:24])[CH2:2][CH2:3][CH3:4].[OH-].[Na+].O.Cl>O1CCCC1.C(O)C>[CH2:1]([O:5][C:6]1[C:15]2[C:10](=[CH:11][C:12]([F:16])=[CH:13][CH:14]=2)[C:9](=[O:17])[N:8]([CH2:18][C:19]([CH3:21])([CH3:20])[CH3:22])[C:7]=1[C:23]([OH:25])=[O:24])[CH2:2][CH2:3][CH3:4]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 14798Sodium HydroxideHCID 22175340HCID 22175340, compound

Product 1

HCID 22175341HCID 22175341, compoundYield 96.8%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 4-butoxy-7-fluoro-2-neopentyl-1-oxo-1,2-dihydro-3-isoquinolinecarboxylate (3.40 g, 9 mmol) in tetrahydrofuran (20 ml) and ethanol (20 ml) was added sodium hydroxide (1.08 g, 27 mmol). The obtained mixture was refluxed under heating for 3 h. The reaction mixture was pouted into water, and, after making the mixture acidic with 1N hydrochloric acid, 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 tetrahydrofuran-diisopropyl ether to give 4-butoxy-7-fluoro-2-neopentyl-1-oxo-1,2-dihydro-3-isoquinolinecarboxylic acid (3.04 g, 96.8%) as crystals.

Workup

  1. temperatureThe obtained mixture was refluxed
  2. temperatureunder heating for 3 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 tetrahydrofuran-diisopropyl ether

Sources & evidence

ORD record
ord-e64378f28d554779b8bbb40e8fec0528
Source dataset
uspto-grants-2006_04
Patent number
US07034039B2

Reaction notes

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