tert-Butyl-4-[2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)propyl]piperazine-1-carboxylate → 4-Methyl-5-(1-methyl-2-piperazin-1-ylethyl)-2-benzofuran-1(3H)-one

Participants

Reaction Steps

tert-Butyl-4-[2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)propyl]piperazine-1-carboxylate (160 mg, 0.43 mmol) was stirred in TFA (3 mL) at r.t for 3 hr. The reaction was concentrated and pump over high vacuum pump overnight to give the desired product, which could be converted to its freebase by partitioning between an organic solvent and saturated NaHCO3 solution. LC-MS (IE, m/z): 275.38 [M+1]+; tR=0.38 min.

Provenance & Evidence