Reacción #607437

Ecuación de reacción

potassium iodide

(2Z)-(hydroxyimino)(phenyl)acetonitrile

4-(chloromethyl)-1,3-thiazol-2-amine hydrochloride

caesium carbonate

→

(2Z)-{[(2-amino-1,3-thiazol-4-yl)methoxy]imino}(phenyl)acetonitrile

Rendimiento 80.0%

Disolventes

acetonitrile

DMF

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroThe solvent was then evaporated
2. 2
   workup.DISSOLUTIONthe residue dissolved in EtOAc
3. 3
   Lavadosubsequently washed with H2O and brine
4. 4
   OtroAter separation
5. 5
   Secadothe organic phase was dried over MgSO4
6. 6
   Concentraciónthen concentrated
7. 7
   OtroThe residue was purified by chromatography on silica gel

Procedimiento

To a solution of (2Z)-(hydroxyimino)(phenyl)acetonitrile (7.3 g, 49.95 mmol, 1 eq.) in 280 ml of acetonitrile and 30 ml of DMF, was added 4-(chloromethyl)-1,3-thiazol-2-amine hydrochloride (11.09 g, 59.94 mmol, 1.2 eq.) followed by potassium iodide (829 mg, 4.99 mmol, 0.1 eq.) and caesium carbonate (39.06 g, 119.88 mmol, 2.4 eq.). The reaction was stirred overnight at room temperature. The solvent was then evaporated and the residue dissolved in EtOAc, subsequently washed with H2O and brine. Ater separation, the organic phase was dried over MgSO4 then concentrated. The residue was purified by chromatography on silica gel to give (2Z)-{[(2-amino-1,3-thiazol-4-yl)methoxy]imino}(phenyl)acetonitrile (10.30 g, 80% yield, only 1 oxime isomer).

Fuente