Reaktion #607432

Reaktionsgleichung

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

Ausbeute 91.0%

Lösungsmittel

acetonitrile

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe solvent was then evaporated
2. 2
   workup.DISSOLUTIONthe residue dissolved in EtOAc
3. 3
   Waschensubsequently washed with H2O and brine
4. 4
   SonstigeAter separation
5. 5
   Trocknenthe organic phase was dried over MgSO4
6. 6
   Einengenthen concentrated

Vorschrift

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.

Quelle