Sodium Hydroxide → 2-Phenoxy-pyrimidine-4-carboxylic acid

HRID 22672Notes

Reaction equation

HRID 22672 reaction equation
C[O:2][C:3]([C:5]1[CH:10]=[CH:9][N:8]=[C:7]([O:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[N:6]=1)=[O:4].[OH-].[Na+]>CO>[O:11]([C:7]1[N:6]=[C:5]([C:3]([OH:4])=[O:2])[CH:10]=[CH:9][N:8]=1)[C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 205877332-Phenoxy-pyrimidine-4-carboxylic acid methyl ester

Product 1

HCID 219922022-Phenoxy-pyrimidine-4-carboxylic acidYield 60%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of 2-phenoxy-pyrimidine-4-carboxylic acid methyl ester, 16, (1.72 g, 74.8 mmol) in methanol (50 mL) is added a 50% NaOH solution (10 mL) at room temperature. After stirring for 1.5 hours the solvent is removed in vacuo and the remaining aqueous phase is extracted with ethyl acetate. The aqueous phase can then be carefully acidified with concentrated HCl and the white solid which forms extracted twice with ethyl acetate. The organic layers are combined, dried and concentrated in vacuo to afford 0.95 g (60% yield) of the desired product as a white solid.

Workup

  1. customis removed in vacuo
  2. extractionthe remaining aqueous phase is extracted with ethyl acetate
  3. extractionthe white solid which forms extracted twice with ethyl acetate
  4. customdried
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-e8cce4c6afb9447ca3d54e2d9769dba2
Source dataset
uspto-grants-2005_02
Patent number
US06849627B2

Reaction notes

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