Reaktion #49723

Reaktionsgleichung

1-[2-chloro-4-(methylsulphenyl)phenyl]-3-cyclopropylprop-1-yn-3-one

ethyl chloro-oximidoacetate

→

ethyl 5-[2-chloro-4-(methylsulphenyl)phenyl]-4-cyclopropylcarbonylisoxazole-3-carboxylate

Ausbeute 35.5%

Lösungsmittel

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturheated
2. 2
   Temperaturat reflux overnight
3. 3
   TemperaturIt was cooled
4. 4
   Sonstigeevaporated to dryness
5. 5
   SonstigeThe residue was purified by chromatography
6. 6
   Wascheneluted with a mixture of hexane and dichloromethane

Vorschrift

A mixture of 1-[2-chloro-4-(methylsulphenyl)phenyl]-3-cyclopropylprop-1-yn-3-one (1.39g) and ethyl chloro-oximidoacetate (0.84g) in toluene was stirred and heated at reflux overnight. It was cooled and evaporated to dryness. The residue was purified by chromatography eluted with a mixture of hexane and dichloromethane, followed by ether to give ethyl 5-[2-chloro-4-(methylsulphenyl)phenyl]-4-cyclopropylcarbonylisoxazole-3-carboxylate (compound 9, 0.72g) as an orange solid, m.p. 50° C.

Quelle