Dimethylformamide → HCID 13259338, compound

Participants

Reaction Steps

A mixture of 0.5 g 1-(m-trifluoromethylphenyl)-2-oxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine, 0.8 g of dimethylcarbonate and 10 ml of dimethylformamide was reacted at 160° - 170° C in sealed-tube for 20 hours. After the reaction was finished, the solvent was distilled off from the mixture to leave a residue, to which was added water. This residue was extracted with ether and then dehydrated. The ether solution was applied on a column of alumina, and then eluted with ether. The ether was evaporated from the eluate and left to give 0.4 g of 1-(m-trifluoromethylphenyl)-3-methyl-2-oxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine as colorless prisms, melting at 122° - 124° C.

Provenance & Evidence