Réaction #2897

Équation de réaction

Hydroxy(tosyloxy)iodobenzene

1,1,1-trifluoropentane-2,4-dione

thiourea

→

title compound

5-Acetyl-2-amino-4-trifluoromethylthiazole

Solvants

acetonitrile

Conditions de réaction

Traitement

1. 1
   TempératureThe mixture was heated
2. 2
   Températureunder reflux for 45 minutes
3. 3
   Températurecooled
4. 4
   TempératureThe mixture was heated
5. 5
   Températureunder reflux for 4 hours
6. 6
   workup.WAITleft
7. 7
   AutreEvaporation and crystallisation of the residue from dichloromethane

Mode opératoire

Hydroxy(tosyloxy)iodobenzene (78.5 g) was added to a solution of 1,1,1-trifluoropentane-2,4-dione in acetonitrile (500 ml). The mixture was heated under reflux for 45 minutes, then cooled, and thiourea (15.2 g) was added. The mixture was heated under reflux for 4 hours and then left to stand overnight. Evaporation and crystallisation of the residue from dichloromethane gave the title compound.

Source