Lithium hydroxide, monohydrate → 2-(2-tert-Butoxy-2-oxoethyl)-6-(3-chloro-4-fluorobenzyl)-4-methoxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylic acid

HRID 2066587Notes

Reaction equation

HRID 2066587 reaction equation
[C:1]([O:5][C:6](=[O:35])[CH2:7][N:8]1[C:17](=[O:18])[C:16]([O:19][CH3:20])=[C:15]2[C:10]([CH2:11][CH2:12][N:13]([CH2:22][C:23]3[CH:28]=[CH:27][C:26]([F:29])=[C:25]([Cl:30])[CH:24]=3)[C:14]2=[O:21])=[C:9]1[C:31]([O:33]C)=[O:32])([CH3:4])([CH3:3])[CH3:2].O.[OH-].[Li+]>O1CCCC1.O>[C:1]([O:5][C:6](=[O:35])[CH2:7][N:8]1[C:17](=[O:18])[C:16]([O:19][CH3:20])=[C:15]2[C:10]([CH2:11][CH2:12][N:13]([CH2:22][C:23]3[CH:28]=[CH:27][C:26]([F:29])=[C:25]([Cl:30])[CH:24]=3)[C:14]2=[O:21])=[C:9]1[C:31]([OH:33])=[O:32])([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 66996943Methyl 2-(2-tert-butoxy-2-oxoethyl)-6-(3-chloro-4-fluorobenzyl)-4-methoxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylate

Product 1

HCID 669968852-(2-tert-Butoxy-2-oxoethyl)-6-(3-chloro-4-fluorobenzyl)-4-methoxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylic acid

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of methyl 2-(2-tert-butoxy-2-oxoethyl)-6-(3-chloro-4-fluorobenzyl)-4-methoxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylate (0.49 g, 0.96 mmol) and lithium hydroxide monohydrate (0.12 g, 2.9 mmol) in a mixture of tetrahydrofuran (3 mL) and water (2 mL) was stirred at room temperature for one hour. The reaction mixture was concentrated under vacuum. The residue was partitioned between dichloromethane and dilute hydrochloric acid. The organic extract was dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum to provide the title compound. This was used in the following step without further purification. ES MS M+1=495

Workup

  1. concentrationThe reaction mixture was concentrated under vacuum
  2. customThe residue was partitioned between dichloromethane and dilute hydrochloric acid
  3. extractionThe organic extract
  4. dry with materialwas dried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-dfce728af82d4af18dac68bcb7621922
Source dataset
uspto-grants-2012_10
Patent number
US08293731B2

Reaction notes

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