反应详情

6.2 g of 3,7-diethylxanthine, 4.1 g of ptassium carbonate, and 6.6 g of 1-bromo-6-hydroxy-6-methylheptane are stirred in 100 ml of dimethylformamide at 120° C. for 18 hours. The mixture is filtered hot with suction, the filtrate is concentrated under recuced pressure final recrystallization from diisopropylether with addition of petroleum ether.

1. filtrationThe mixture is filtered hot with suction
2. concentrationthe filtrate is concentrated under recuced pressure final
3. customrecrystallization from diisopropylether
4. additionwith addition of petroleum ether