Potassium Iodide → HCID 22397675, compound

Participants

Reaction Steps

8.9 g (24.9 mmol) 1-(4-chlorobutyryl)-4-diphenylmethylpiperazine, 4.8 g (73.8 mmol) sodium azide, 1 g potassium iodide and 1 g molecular sieve 4A are stirred in 70 ml DMF for five hours at 70° C. After cooling, the reaction mixture is filtered and the filtrate is concentrated under vacuum. The accumulated crude product is dissolved in methanol and mixed with a spatula tip of palladium-carbon (10%). The mixture is stirred for two days at RT under hydrogen atmosphere. The mixture is filtered from the catalyst and the solvent is removed under vacuum. The residue is chromatographically purified over silica gel with CHCl3/CH3OH/TEA (90/10/5): yield 5.2 g (62%) as a colorless amorphous solid.

Provenance & Evidence