反应详情

温度

60 °C

A mixture of 3-(2-chlorophenyl)-7-(trans-4-hydroxycyclohexylamino)-3,4-dihydropyrimido[4,5-d]pyrimidin-2(1H)-one (300 mg, 0.8 mal) (prepared as described in Example 73) and 96% formic acid (2 mL) was stirred at 60° C. for 3 hours, then concentrated under reduced pressure. The residue was triturated in ether, filtered and dried to give 250 mg of 3-(2-chlorophenyl)-7-(trans-4-formyloxycyclohexylamino)-3,4-dihydropyrimido[4,5-d]pyrimidin-2(1H)-one.

1. concentrationconcentrated under reduced pressure
2. customThe residue was triturated in ether
3. filtrationfiltered
4. customdried