Hydrochloric Acid → 6-Carboxy-7-methoxy-4-(indol-5-yloxy)quinoline

HRID 387972Notes

Reaction equation

HRID 387972 reaction equation
C[O:2][C:3]([C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][C:14]=1[O:15][CH3:16])[N:11]=[CH:10][CH:9]=[C:8]2[O:17][C:18]1[CH:19]=[C:20]2[C:24](=[CH:25][CH:26]=1)[NH:23][CH:22]=[CH:21]2)=[O:4].[OH-].[Li+].Cl>O1CCCC1>[C:3]([C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][C:14]=1[O:15][CH3:16])[N:11]=[CH:10][CH:9]=[C:8]2[O:17][C:18]1[CH:19]=[C:20]2[C:24](=[CH:25][CH:26]=1)[NH:23][CH:22]=[CH:21]2)([OH:4])=[O:2]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 229366056-Methoxycarbonyl-7-methoxy-4-(5-indolyloxy)quinoline

Product 1

HCID 229369786-Carboxy-7-methoxy-4-(indol-5-yloxy)quinolineYield 72.9%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

After dissolving 6-methoxycarbonyl-7-methoxy-4-(indol-5-yloxy)quinoline (400 mg) in tetrahydrofuran (5 ml), a 1.5N aqueous lithium hydroxide solution (2.5 ml) was added and the mixture was stirred at room temperature for 3 hours. The reaction solution was adjusted to pH 4 with 1N aqueous hydrochloric acid, and the precipitated crystals were filtered out and washed with ethyl acetate to obtain the title compound (280 mg).

Workup

  1. filtrationthe precipitated crystals were filtered out
  2. washwashed with ethyl acetate

Sources & evidence

ORD record
ord-5e0ccb0245904be49df2ffa8a717c54e
Source dataset
uspto-grants-2013_02
Patent number
US08372981B2

Reaction notes

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