Reaktion #955971

Reaktionsgleichung

thiophene-3,4-dicarboxylic anhydride

4-(3-ethylheptyl)-2,3,5,6-tetrafluoroaniline

→

5-(4-(3-ethylheptyl)-2,3,5,6-tetrafluorophenyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione

Lösungsmittel

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   FiltrationThe crude product is collected by filtration of the cold reaction mixture
2. 2
   SonstigeAnother portion of product can be recovered
3. 3
   Waschenby washing the filtrate with 5% hydrochloric acid
4. 4
   Sonstigeevaporating the solvent
5. 5
   SonstigeThe target molecule is purified by recrystallization from toluene
6. 6
   workup.DISSOLUTIONdissolved in 150 ml of thionyl chloride
7. 7
   Temperaturrefluxed for 3 hrs
8. 8
   EinengenThe reaction mixture is concentrated down
9. 9
   Sonstigedried
10. 10
    Sonstigepurified

Vorschrift

A solution of thiophene-3,4-dicarboxylic anhydride (8.0 mmol) and 4-(3-ethylheptyl)-2,3,5,6-tetrafluoroaniline (8.5 mmol) in 125 ml of toluene is refluxed for 24 h. The crude product is collected by filtration of the cold reaction mixture. Another portion of product can be recovered by washing the filtrate with 5% hydrochloric acid and then evaporating the solvent. The target molecule is purified by recrystallization from toluene, dissolved in 150 ml of thionyl chloride and refluxed for 3 hrs. The reaction mixture is concentrated down, dried, and purified.

Quelle