Reaktion #552623

Reaktionsgleichung

4-hydroxyphenylpropan-2-one

potassium carbonate

chloroacetonitrile

→

4-acetonylphenoxyacetonitrile

Lösungsmittel

acetone

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturwas heated
2. 2
   Temperaturunder reflux for 5 h
3. 3
   Temperaturcooled
4. 4
   Filtrationfiltered
5. 5
   workup.ADDITIONtreated with 2N hydrochloric acid (1 ml)
6. 6
   Sonstigethe solvent was evaporated in vacuo
7. 7
   Sonstigethe residue partitioned between ethylacetate and water
8. 8
   TrocknenThe organic layer was dried, (magnesium sulphate),
9. 9
   Filtrationfiltered
10. 10
    Sonstigeevaporated
11. 11
    SonstigeThe residue was purified by column chromatography on silica

Vorschrift

A mixture of 4-hydroxyphenylpropan-2-one, ethylene ketal (4.7 g), potassium carbonate (3.5 g) and chloroacetonitrile (1.83 g) in acetone, was heated under reflux for 5 h, cooled, filtered, and treated with 2N hydrochloric acid (1 ml). The solution was allowed to stand at room temperature for 4 h, the solvent was evaporated in vacuo and the residue partitioned between ethylacetate and water. The organic layer was dried, (magnesium sulphate), filtered and evaporated. The residue was purified by column chromatography on silica using chloroform as eluent to give 4-acetonylphenoxyacetonitrile, (3.0 g)

Quelle