Reaktion #9740

Reaktionsgleichung

ethyl 3-(bromomethyl)-5-[4-(trifluoromethyl)phenyl]thiophene-2-carboxylate

intermediate 43

ethyl 3-(bromomethyl)-5-[4-(trifluoromethyl)phenyl]thiophene-2-carboxylate

benzyl mercaptan

potassium carbonate

→

title compound

ethyl 3[(benzylthio)methyl]-5-[4-(trifluoromethyl)phenyl]thiophene-2-carboxylate

Lösungsmittel

acetonitrile

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction mixture was partitioned between ethyl acetate and water the organic layer
2. 2
   Sonstigeas collected
3. 3
   Trocknendried over magnesium sulfate
4. 4
   Einengenconcentrated
5. 5
   SonstigeThe residue was purified by SPE (Si cartridge)
6. 6
   Wascheneluting initially with cyclohexane:chloroform (5:1)

Vorschrift

A solution of ethyl 3-(bromomethyl)-5-[4-(trifluoromethyl)phenyl]thiophene-2-carboxylate (intermediate 43, 0.100 g) and benzyl mercaptan (0.30 g) in acetonitrile (10 ml) was treated with potassium carbonate (0.46 g) and the mixture stirred at ambient temperature overnight. The reaction mixture was partitioned between ethyl acetate and water the organic layer as collected, dried over magnesium sulfate and concentrated. The residue was purified by SPE (Si cartridge) eluting initially with cyclohexane:chloroform (5:1) and then cyclohexane:chloroform (1:3) to give the title compound as a colourless oil.

Quelle