Methylamine → 6-(4-Methoxyphenyl)-N7-methyl-pyrido[2,3-d]pyrimidine-2,7-diamine

Participants

Reaction Steps

A mixture of 3.4 g of 2-amino-7-chloro-6-(4-methoxyphenyl)-pyrido[2,3-d]pyrimidine from Example 12, 40 mL of anhydrous methylamine, and 10 mL of methanol were heated in a bomb on a steam bath for 4 hours. After cooling, the suspension was washed out of the bomb with 50 mL of methanol/water (50:50) and the solvents were evaporated in vacuo. The solid residue was slurried with 50 mL of water, filtered, and crystallized from ethanol to afford 2.2 g of the title compound 6-(4-methoxyphenyl)-N7 -methyl-pyrido[2,3-d]-pyrimidine-2,7-diamine, mp 270-275° C. dec.

Provenance & Evidence