2-Pyridinemethanamine → 2-aminopyrido[2,3-d]pyrimidin-7(8H)-one 34

Participants

Reaction Conditions

Reaction Steps

A mixture of 0.165 g (0.47 nmmol) of 6-(2,6-dichlorophenyl)-8-methyl-2-methylsulfanyl-8H-pyrido[2,3-d]pyrimidin-7-one, 1.08 g (10.0 mmol) of 2-(aminomethyl)pyridine and 0.5 mL of dimethylformamide was heated with stirring in a 130° C. oil bath. After 2 minutes, solution was complete. After 2 hours, the excess amine and dimethylformamide were evaporated at reduced pressure. Ether (5 mL) was added to the residue. Crystals immediately developed. Water (5 mL) was added, and the entire mixture was filtered. The cake was washed 5 mL of ether, 5 mL of water, and then dried; wt 0.164 g. Recrystallization from ethyl acetate gave 0.075 g of pure product; mp 198-201° C.

Provenance & Evidence