Water → TAK-603

HRID 862635Notes

Reaction equation

HRID 862635 reaction equation
[H-].[Na+].[NH:3]1[CH:7]=[N:6][CH:5]=[N:4]1.Cl[CH2:9][C:10]1[C:19]([C:20]([O:22][CH2:23][CH3:24])=[O:21])=[C:18]([C:25]2[CH:30]=[CH:29][C:28]([O:31][CH3:32])=[C:27]([O:33][CH3:34])[CH:26]=2)[C:17]2[C:12](=[CH:13][C:14]([O:37][CH3:38])=[C:15]([O:35][CH3:36])[CH:16]=2)[N:11]=1.O>CN(C)C=O>[CH3:36][O:35][C:15]1[CH:16]=[C:17]2[C:12](=[CH:13][C:14]=1[O:37][CH3:38])[N:11]=[C:10]([CH2:9][N:3]1[CH:7]=[N:6][CH:5]=[N:4]1)[C:19]([C:20]([O:22][CH2:23][CH3:24])=[O:21])=[C:18]2[C:25]1[CH:30]=[CH:29][C:28]([O:31][CH3:32])=[C:27]([O:33][CH3:34])[CH:26]=1

Participants

6

Reactant 4

HCID 962WaterHCID 92571H-1,2,4-TriazoleHCID 24758Sodium hydrideHCID 10813243Ethyl 2-chloromethyl-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinoline-3-carboxylate

Product 1

HCID 153980TAK-603Yield 53%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Oily sodium hydride (60%, 0.323 g) was added to a solution of 1H-1,2,4-triazole (0.558 g) in N,N-dimethylformamide (30 ml), and the mixture was stirred at room temperature for 15 minutes. Then ethyl 2-chloromethyl-6,7-dimethoxy-4-(3,4-dimethoxyphenyl)quinoline-3-carboxylate(3.0 g) was added. The mixture was stirred at 80° C. for 1 hour, poured into water and extracted with ethyl acetate. The ethyl acetate layer was washed with water and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was subjected to column chromatography on silica gel. The fractions firstly eluted with chloroform/methanol (40/1, v/v) gave ethyl 6,7-dimethoxy-4-(3,4-dimethoxyphenyl)-2-(1,2,4-triazol-1-ylmethyl)quinoline-3-carboxylate (1.7 g, 53%) which was then recrystallized from ethyl acetate-hexane. Colorless prisms. mp. 176°-177° C.

Workup

  1. stirringThe mixture was stirred at 80° C. for 1 hour
  2. extractionextracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with water
  4. dry with materialdried over magnesium sulfate
  5. customthe solvent was evaporated under reduced pressure
  6. washThe fractions firstly eluted with chloroform/methanol (40/1

Sources & evidence

ORD record
ord-7c8e2bcfcb2a438c9f9ab1a0e9c428ed
Source dataset
uspto-grants-1998_02
Patent number
US05719157

Reaction notes

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