Potassium Carbonate → HCID 18321654, compound

Participants

Reaction Steps

A suspension of Ethyl 2-[2-(4-cyanoanilino)-ethyl (2-ethoxy-2-oxoethyl)amino]acetate (58 g, 0.174 mol), diisopropylethylamine (4 g, 0.03 mol) and potassium carbonate (24 g, 0.174 mol) in 400 ml of acetonitrile is refluxed for 2 days. The mixture is filtered and rinsed with dichloromethane. The filtrate is evaporated to give a brown solid, which is dissolved in 150 ml of methanol and 50 ml of water, and lithium hydroxide monohydrate (8.4 g, 0.2 mol) is then added. After stirring for 30 minutes at room temperature, half of the methanol is removed under vacuum to give a suspension. About 100 ml of water are added and this mixture is acidified at 5° C. The product is filtered off, rinsed with water and dried under vacuum at 50° C. to give 27.2 g of a beige-coloured powder.

Provenance & Evidence