反应详情

温度

100 °C

203.0 g (0.75 mol) of phosphorus tribromide was added to 263.1 g (3.6 mol) of N,N-dimethylformamide, and 45.3 g (0.3 mol) of guanine (manufactured by Sumika Fine Chemicals Co., Ltd.) was then added followed by stirring at 100° C. for 8 hours. After cooling, the reaction mixture was added to 2000 ml of water containing 315.0 g (3.75 mol) of sodium hydrogen carbonate. The precipitating crystal was collected by filtration and washed with 500 ml of water to yield a crystal of 2-dimethylaminomethyleneamino-6-bromopurine, whose properties are as follows:

1. additionwas then added
2. temperatureAfter cooling
3. filtrationThe precipitating crystal was collected by filtration
4. washwashed with 500 ml of water