Sodium Hydroxide → HCID 178467362, compound

HRID 725157Notes

Reaction equation

HRID 725157 reaction equation
[CH2:1]([O:3][C:4]1[N:8]([CH2:9][C:10]2[CH:15]=[CH:14][C:13]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]3[NH:26][N:25]=[N:24][N:23]=3)=[CH:12][CH:11]=2)[C:7]2[C:27]([C:31]([O:33]CC)=[O:32])=[CH:28][CH:29]=[CH:30][C:6]=2[N:5]=1)[CH3:2].[OH-].[Na+]>C(O)C>[CH2:1]([O:3][C:4]1[N:8]([CH2:9][C:10]2[CH:11]=[CH:12][C:13]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]3[NH:26][N:25]=[N:24][N:23]=3)=[CH:14][CH:15]=2)[C:7]2[C:27]([C:31]([OH:33])=[O:32])=[CH:28][CH:29]=[CH:30][C:6]=2[N:5]=1)[CH3:2]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 178468771ethyl 1-((2'-(1H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate

Product 1

HCID 178467362HCID 178467362, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of ethyl 2-ethoxy-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]benzimidazole-7-carboxylate (0.24 g) and 1N NaOH (1.5 ml) in ethanol (4 ml) was stirred at 80° C. for one hour. The reaction mixture was concentrated, and the concentrate was extracted with water and ethyl acetate. The aqueous layer was adjusted to pH 3-4 with 1N-HCl to give crystals. Recrystallization of the crystals from ethyl acetate-methanol afforded colorless crystals (0.15 g, 67%), m.p. 183°-185° C.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. extractionthe concentrate was extracted with water and ethyl acetate
  3. customto give crystals
  4. customRecrystallization of the crystals from ethyl acetate-methanol afforded colorless crystals (0.15 g, 67%), m.p. 183°-185° C.

Sources & evidence

ORD record
ord-f569e467f3dd4c7385c55e54339d1ae5
Source dataset
uspto-grants-1998_01
Patent number
US05705517

Reaction notes

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