1-Acetylpiperazine → (4-Acetyl-piperazin-1-yl)pyridin-3-yl-acetic acid ethyl ester

Participants

Reaction Steps

N-acetyl-piperazine (3.7 g; 28.8 mmol; 2.8 equiv) was combined with bromo-pyridin-3-yl-acetic acid ethyl ester (approx. 2.5 g; 10 mmol). Purification on a 3×16 cm silica column using a 30% then 40% ethyl acetate/hexanes (v/v) mobile phase followed by a 2% methanol/dichloromethane (v/v) mobile phase resulted in 1.84 g light yellow oil (approx. 60% yield). MS(ES) calc'd: [M+H]+=292.2 m/z; [M+Na]+=314.2 m/z.

Provenance & Evidence