Benzyl Bromide → Tert-butyl 4-benzyl-3-oxopiperazine-1-carboxylate

Participants

Reaction Steps

Sodium hydride (88 mg, 60% wt.) was added portionwise to a solution of 4-BOC-piperazinone (400 mg) in DMF (10 ml). The reaction mixture was stirred for 1 h, and then benzyl bromide (262 μl) was added dropwise and the mixture stirred at room temp for 16 h. The reaction was quenched with methanol and diluted with water, and then extracted with EtOAC. The organic extracts were concentrated in vacuo and the residue was purified by chromatography (silica, 20% ether/hexane as eluent) to give the sub-title compound (429 mg).

Provenance & Evidence