反应 #607432

反应方程式

potassium iodide

(2Z)-(hydroxyimino)(3-methoxyphenyl)acetonitrile

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

caesium carbonate

→

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

收率 91.0%

溶剂

acetonitrile

DMF

反应条件

后处理

1. 1
   其他The solvent was then evaporated
2. 2
   workup.DISSOLUTIONthe residue dissolved in EtOAc
3. 3
   洗涤subsequently washed with H2O and brine
4. 4
   其他Ater separation
5. 5
   干燥the organic phase was dried over MgSO4
6. 6
   浓缩then concentrated

实验过程

To a solution of (2Z)-(hydroxyimino)(3-methoxyphenyl)acetonitrile (2.57 g, 14.59 mmol, 1 eq.) in 70 ml of acetonitrile and 7 ml of DMF, was added 4-(chloromethyl)-1,3-thiazol-2-amine hydrochloride (2.87 g, 16.05 mmol, 1.1 eq.) followed by potassium iodide (242 mg, 1.46 mmol, 0.1 eq.) and caesium carbonate (10.45 g, 32.09 mmol, 2.2 eq.). The reaction was stirred 8 h 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 to afford (2Z)-{[(2-amino-1,3-thiazol-4-yl)methoxy]imino}(3-methoxyphenyl)acetonitrile (4.03 g, 91% yield, only 1 oxime isomer) which was used in the next step without further purification.

来源