Potassium Hydroxide → HCID 18436985, compound

Participants

Reaction Steps

To a stirred mixture of KOH(s) (56.09 g, 2.66 mol) in methyl alcohol (1.33 L) is added 3-(4-benzyl-piperazin-1-yl)-1-(toluene-4-sulfonyl)-1H-thieno[3,2-c]pyrazole (241 g, 0.532 mol). The mixture is heated at reflux for 1.25 hours, cooled to room temperature and evaporated. The residue is taked up in EtOAc (1 L) washed with water (2 L), dried (MgSO4) filtered and evaporated. The residue was recrystallized from EtOAc/Heptane yielding 129 g (81%).

Provenance & Evidence