Hydrochloric Acid → HCID 178503339, compound

HRID 725162Notes

Reaction equation

HRID 725162 reaction equation
[CH3:1][S:2][C:3]1[N:7]([CH2:8][C:9]2[CH:14]=[CH:13][C:12]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=3[C:21]3[NH:25][N:24]=[N:23][N:22]=3)=[CH:11][CH:10]=2)[C:6]2[C:26]([C:30]([O:32]CC)=[O:31])=[CH:27][CH:28]=[CH:29][C:5]=2[N:4]=1.[OH-].[Na+].Cl>CO>[CH3:1][S:2][C:3]1[N:7]([CH2:8][C:9]2[CH:10]=[CH:11][C:12]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=3[C:21]3[NH:25][N:24]=[N:23][N:22]=3)=[CH:13][CH:14]=2)[C:6]2[C:26]([C:30]([OH:32])=[O:31])=[CH:27][CH:28]=[CH:29][C:5]=2[N:4]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 178468774HCID 178468774, compound

Product 1

HCID 178503339HCID 178503339, compoundYield 90.4%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A solution of ethyl 2-methylthio-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]benzimidazole-7-carboxylate (0.2 g) in a methanol (5 ml) solution containing 1N NaOH 1.3 ml) was heated under reflux for 2 hours. The reaction mixture was adjusted to about pH 4 with dilute hydrochloric acid to give crystals. The crystals were collected by filtration, and recrystallized from ethyl acetate-hexane to give colorless crystals (0.17 g, 81%), m.p. 223°-225° C. (decomp.).

Workup

  1. temperaturewas heated
  2. temperatureunder reflux for 2 hours
  3. customto give crystals
  4. filtrationThe crystals were collected by filtration
  5. customrecrystallized from ethyl acetate-hexane

Sources & evidence

ORD record
ord-f0ca5b8a6fed40a59d64630136918021
Source dataset
uspto-grants-1998_01
Patent number
US05705517

Reaction notes

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