تفاعل #607437

معادلة التفاعل

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

المردود 80.0%

المذيبات

acetonitrile

DMF

ظروف التفاعل

المعالجة

1. 1
   أخرىThe solvent was then evaporated
2. 2
   workup.DISSOLUTIONthe residue dissolved in EtOAc
3. 3
   غسيلsubsequently washed with H2O and brine
4. 4
   أخرىAter separation
5. 5
   تجفيفthe organic phase was dried over MgSO4
6. 6
   تركيزthen concentrated
7. 7
   أخرىThe residue was purified by chromatography on silica gel

الإجراء التجريبي

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).

المصدر