Chloroacetamide → Tert-butyl 4-(2-carbamoylbenzofuran-5-yl)piperazine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

5 ml of 1-methyl-2-pyrrolidone, 0.16 g of chloroacetamide and 0.25 g of potassium carbonate are added at 20° C. with stirring/under nitrogen to 0.5 g of 5-(4-tert-butoxycarbonylpiperazin-1-yl)-2-hydroxybenzaldehyde. The mixture is stirred at 60° C. for 16 hours, cooled and then filtered, and the solvent is removed under reduced pressure. The residue is taken up in MTB ether, re-filtered and concentrated, and the residue is crystallized from toluene. The isolated yield is 0.34 g (60%).

Provenance & Evidence