Piperazine, hexahydrate → HCID 12884179, compound

Participants

Reaction Steps

A mixture containing 1.40 g of 5,8-dihydro-2-methylthio-8-n-propyl-5-oxopyrido[2,3-d]pyrimidine-6-carboxylic acid, 2.94 g of piperazine hexahydrate, and 20 ml of dimethylsulfoxide was heated at 100 - 110°C for 1.5 hours. The precipitate was collected, washed with ethanol, and then recrystallized from water to yield 1.40 g of the product, as colorless needles, m.p. 259°- 261°C.

Provenance & Evidence