反应详情

4-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-bicyclo[2.2.2]octane-1-carbaldehyde (XI, Example 9, 0.490 g, 1.32 mmol) is added to a mixture of malonic acid (0.275 g, 2.64 mmol), pyridine (2 ml), and piperidine (1 drop). The mixture is heated to 100° for 16 hours. Four additional equivalents of malonic acid are added and heating continued for another 16 hours until consumption of aldehyde ceases, to give the title compound.

1. temperatureThe mixture is heated to 100° for 16 hours
2. temperatureheating
3. customcontinued for another 16 hours until consumption of aldehyde ceases