Methanol → tert-Butyl piperazine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

To t-butyl 4-(4-cyanophenyl)piperazine-1-carboxylate (2.30 g, 8.0 mmol, prepared by reaction of the aryl-piperazine with Boc-anhydride) in toluene (20 ml) add DIBAH (diisobutylaluminum hydride) (1.0M in toluene, 12.8 ml, 12.8 mmol). Heat at 50° C. 1.5 h, allow to cool, add MeOH (10 ml) and water (10 ml). Filter and concentrate. Chromatograph the residue over silica to obtain the Boc-piperazine as a yellow solid.

Provenance & Evidence