Réaction #1223

Équation de réaction

potassium carbonate

trichloroacetyl chloride

pyrrole

→

2-trichloroacetylpyrrole

Solvants

water

ethyl ether

ethyl ether

Conditions de réaction

Traitement

1. 1
   AutreThe organic phase was decanted off
2. 2
   Séchagedried over magnesium sulfate
3. 3
   Autreevaporated
4. 4
   Autrethe residue triturated in hexane
5. 5
   Filtrationfiltered
6. 6
   Autre42.7 g (87%) of the expected compound of melting point 78°-79° C. were recovered

Mode opératoire

45 g (247 mmol) of trichloroacetyl chloride and 100 ml of ethyl ether were introduced into a three-necked flask. A solution of 15.4 g (230 mmol) of pyrrole in 100 ml of ethyl ether was added dropwise and the mixture was stirred at room temperature for one hour, then a solution of 20 g of potassium carbonate in 60 ml of water was added slowly. The organic phase was decanted off, dried over magnesium sulfate, evaporated, the residue triturated in hexane and filtered. 42.7 g (87%) of the expected compound of melting point 78°-79° C. were recovered.

Source