Sodium Hydroxide → 2-(2-Amino-4-thiazolyl)-2-ethoxyiminoacetic acid

HRID 2412742Notes

Reaction equation

HRID 2412742 reaction equation
[CH2:1]([O:3][N:4]=[C:5]([C:11]1[N:12]=[C:13]([NH2:16])[S:14][CH:15]=1)[C:6]([O:8]CC)=[O:7])[CH3:2].[OH-].[Na+]>C(O)C>[CH2:1]([O:3][N:4]=[C:5]([C:11]1[N:12]=[C:13]([NH2:16])[S:14][CH:15]=1)[C:6]([OH:8])=[O:7])[CH3:2]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 53897917HCID 53897917, compound

Product 1

HCID 534242352-(2-Amino-4-thiazolyl)-2-ethoxyiminoacetic acidYield 65.6%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Ethyl 2-ethoxyimino-2-(2-aminothiazol-4-yl)acetate (syn isomer)(5 g) was added to a mixture of 1N sodium hydroxide (45.9 ml) and ethanol (30 ml) and stirred at room temperature for 5 hours. After removing ethanol from the resultant solution under reduced pressure, the residue was dissolved in water (60 ml) and adjusted to pH 2.0 with 10% hydrochloric acid. The solution was subjected to salting-out, and the precipitates were collected by filtration and dried to give 2-ethoxyimino-2-(2-aminothiazol-4-yl)acetic acid (syn isomer)(2.9 g).

Workup

  1. customAfter removing ethanol from the resultant solution under reduced pressure
  2. dissolutionthe residue was dissolved in water (60 ml)
  3. filtrationthe precipitates were collected by filtration
  4. customdried

Sources & evidence

ORD record
ord-1eb4095a995b451b9da2e09570bbf544
Source dataset
uspto-grants-1985_01
Patent number
US04493833

Reaction notes

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