Sodium Hydroxide → Rabeprazole-thioether

HRID 727902Notes

Reaction equation

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

Participants

Conditions

Temperature: 50 °C

Procedure

20 cc of ethanol was added to a mixture comprising 280 mg (1.8 mmol) of 2-mercapto-1H-benzimidazole, 470 mg (2 mmol) of 2-chloromethyl-4-(3-methoxypropoxy)-3-methylpyridine and 100 mg (2.4 mmol) of sodium hydroxide. The obtained mixture was stirred at 50° C. for 3 hours. After the completion of the reaction, the reaction mixture was distilled to remove the ethanol. The obtained residue was purified by silica gel column chromatography to obtain 590 mg of 2-[{4-(3-methoxypropoxy)-3-methylpyridine-2-yl}methylthio]-1H-benzimidazole as a pale yellow crystal.

Workup

customAfter the completion of the reaction
distillationthe reaction mixture was distilled
customto remove the ethanol
customThe obtained residue was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-8d96d4f7755b41938c4389cadac98620
Source dataset: uspto-grants-1991_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05045552

Reaction notes

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