Hydrochloric Acid → (R)-1-carboxymethyl-3-(5-chloroindole-2-carbonylamino)-3,4-dihydrocarbostyril

HRID 31123Notes

Reaction equation

HRID 31123 reaction equation
[C:1]([CH2:5][N:6]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH2:10][C@@H:9]([NH:17][C:18]([C:20]2[NH:21][C:22]3[C:27]([CH:28]=2)=[CH:26][C:25]([Cl:29])=[CH:24][CH:23]=3)=[O:19])[C:7]1=[O:8])([O:3]C)=[O:2].O.[OH-].[Li+].Cl>O1CCCC1.CO.O>[C:1]([CH2:5][N:6]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH2:10][C@@H:9]([NH:17][C:18]([C:20]2[NH:21][C:22]3[C:27]([CH:28]=2)=[CH:26][C:25]([Cl:29])=[CH:24][CH:23]=3)=[O:19])[C:7]1=[O:8])([OH:3])=[O:2]

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 168937Lithium hydroxide, monohydrateHCID 69194658(R)-1-carbomethoxymethyl-3-(5-chloroindole-2-carbonylamino)-3,4-dihydrocarbostyril

Product 1

HCID 69198269(R)-1-carboxymethyl-3-(5-chloroindole-2-carbonylamino)-3,4-dihydrocarbostyrilYield 95.6%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

(R)-1-carbomethoxymethyl-3-(5-chloroindole-2-carbonylamino)-3,4-dihydrocarbostyril (Example 7) (13 mg) was dissolved in a 2:2:1 mixture of tetrahydrofuran, methanol, and water (5 mL). Lithium hydroxide monohydrate (3 mg) was added, and the resulting mixture was stirred at room temperature for 2 h. Addition of 1.0 M aqueous hydrochloric acid (10 mL) was followed by extraction with ethyl acetate (20 mL twice). The combined organic layers were washed with brine (10 mL), dried over anhydrous sodium sulfate, and evaporated under vacuum to provide the title compound (12 mg). HPLC/MS [M+H]+, 398.

Workup

  1. extractionwas followed by extraction with ethyl acetate (20 mL twice)
  2. washThe combined organic layers were washed with brine (10 mL)
  3. dry with materialdried over anhydrous sodium sulfate
  4. customevaporated under vacuum

Sources & evidence

ORD record
ord-ea71577378634910a900c2cf8edb9308
Source dataset
uspto-grants-2008_09
Patent number
US07425550B2

Reaction notes

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