5-(2-Bromoethyl)-2-benzofuran-1(3H)-one → 1,4-Bis[2-(1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-2-one

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-[2-(1-Oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperazin-2-one (30 mg, 0.12 mmol) and 5-(2-Bromoethyl)-2-benzofuran-1(3H)-one (56 mg, 0.23 mmol) in DMF (2 ml) was added TEA (0.048 ml, 0.35 mmol) and tetrabutylammonium iodide (4.3 mg, 0.012 mmol). The mixture was heated to 55° C. for 16 hours. LC showed formation of the desired product, which was purified by mass-directed reverse phase HPLC (AcCN-Water with 0.1% TFA). LC-MS (IE, m/z): 421 [M+1]+.

Provenance & Evidence