Acetic Acid → HCID 20160800, compound

Participants

Reaction Steps

8.1 g of 2-cyanoethyl 2-acetyl-3-(3-nitrophenyl)acrylate and 10.6 g of 3-(4,4-diphenylpiperid-1-yl)-propyl 3-aminocrotonate are heated at the boiling point under reflux in 120 ml of 2-propanol and 0.5 ml of glacial acetic acid for 4 hours. After most of the solvent has been distilled off and 2 portions of 50 ml of toluene each have been added, the residue is concentrated to dryness. The residue, which has foamed as a solid, is taken up in isopropanol, and diethyl ether is added to the clear solution until the resulting cloudiness first persists. After the mixture has been left to stand in a refrigerator, the starting compound crystallizes out in the form of fine platelets. m.p.: 158°-160° C.; yield: 14.3 g.

Provenance & Evidence