Lithium hydroxide, monohydrate → 4'-Methyl-5-tetrazol-1-yl-biphenyl-3-carboxylic acid

HRID 736872Notes

Reaction equation

HRID 736872 reaction equation
O[Li].O.C[O:5][C:6]([C:8]1[CH:9]=[C:10]([C:19]2[CH:24]=[CH:23][C:22]([CH3:25])=[CH:21][CH:20]=2)[CH:11]=[C:12]([N:14]2[CH:18]=[N:17][N:16]=[N:15]2)[CH:13]=1)=[O:7]>O.C1COCC1>[CH3:25][C:22]1[CH:23]=[CH:24][C:19]([C:10]2[CH:11]=[C:12]([N:14]3[CH:18]=[N:17][N:16]=[N:15]3)[CH:13]=[C:8]([C:6]([OH:7])=[O:5])[CH:9]=2)=[CH:20][CH:21]=1

Participants

5

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 578511214'-Methyl-5-tetrazol-1-yl-biphenyl-3-carboxylic acid methyl ester

Product 1

HCID 578515114'-Methyl-5-tetrazol-1-yl-biphenyl-3-carboxylic acidYield 93%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of LiOH.H2O (1.86 g, 44.2 mmol) in H2O (40 mL) was added dropwise to a suspension of 4′-Methyl-5-tetrazol-1-yl-biphenyl-3-carboxylic acid methyl ester (10 g, 34 mmol) in THF (25 mL) at 0° C. The reaction mixture was allowed to warm to room temperature and was stirred until the reaction solution turned clear. Solvent was removed under vacuum and the aqueous solution was acidified by addition of 10% HCl to pH=3. The resulting precipitate was collected and dried to afford 4′-Methyl-5-tetrazol-1-yl-biphenyl-3-carboxylic acid as white solid (8.85 g, 93%). MS (M+H)=281.

Workup

  1. customSolvent was removed under vacuum
  2. additionthe aqueous solution was acidified by addition of 10% HCl to pH=3
  3. customThe resulting precipitate was collected
  4. customdried

Sources & evidence

ORD record
ord-97f6f9e3149d43a0bea5996c7c61e618
Source dataset
uspto-grants-2009_09
Patent number
US07595405B2

Reaction notes

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