Sodium ethoxide → HCID 21532573, compound

Participants

Reaction Steps

A mixture containing 3.0 g of ethyl 5-chloro-2-(4-methyl-1-piperazinyl)pyrido[2,3-d]pyrimidine-6-carboxylate, 0.7 g of sodium ethoxide, and 50 ml of absolute ethanol was heated to reflux for 2 hours. The ethanol was removed by distillation in vacuo, the residue was extracted with chloroform and the extract washed with water, and dried over anhydrous magnesium sulfate. After the solvent was distilled off the residue was crystallized from n-hexane to give 2.8 g of the product as pale yellow needles, m.p. 105° - 108°C.

Provenance & Evidence