Reacción #607439

Ecuación de reacción

2-phenylethyl (4-{[({(1Z,2Z)-2-[ethyl(hydroxy)amino]-2-imino-1-phenylethylidene}amino)oxy]methyl}-1,3-thiazol-2-yl)carbamate

1,1′-carbonyldiimidazole

→

3-[(Z)-{[(2-amino-1,3-thiazol-4-yl)methoxy]imino}(phenyl)methyl]-2-ethyl-1,2,4-oxadiazol-5(2H)-one

Rendimiento 84.4%

Disolventes

acetonitrile

Condiciones de reacción

Tratamiento posterior

1. 1
   Otrothe reaction was quenched by addition of water
2. 2
   Extracciónextracted with EtOAc
3. 3
   Secadodried over MgSO4
4. 4
   Concentraciónconcentrated
5. 5
   OtroThe residue was purified by chromatography on silica gel

Procedimiento

To a solution of 2-phenylethyl (4-{[({(1Z,2Z)-2-[ethyl(hydroxy)amino]-2-imino-1-phenylethylidene}amino)oxy]methyl}-1,3-thiazol-2-yl)carbamate (160 mg, 71% purity, 0.24 mmol, 1 eq.) in acetonitrile (3 ml), was added 1,1′-carbonyldiimidazole (555 mg, 0.342 mmol, 1.4 eq.). After stirring at 80° C. for 6 hour, the reaction was quenched by addition of water and extracted with EtOAc. The organics were combined, dried over MgSO4 and concentrated. The residue was purified by chromatography on silica gel to give 3-[(Z)-{[(2-amino-1,3-thiazol-4-yl)methoxy]imino}(phenyl)methyl]-2-ethyl-1,2,4-oxadiazol-5(2H)-one (70 mg, 55% yield).

Fuente