反应详情

温度

30 °C

15.1 g (0.1 mol) of guanine (manufactured by Sumika Fine Chemicals Co., Ltd.) was added to 175.4 g (2.4 mol) of N,N-dimethylformamide, and then 23.0 g (0.15 mol) of phosphorus oxychloride was added drop by drop, followed by stirring at 30° C. for 1 hour. The reaction mixture was added to 500 ml of ice water, and then neutralized with 75.6 g (0.9 mol) of sodium hydrogen carbonate. The precipitating crystal was collected by filtration and washed with 50 ml of water to yield 14.6 g (0.07 mol) of a white crystal of N-dimethylaminomethyleneguanine (yield 71%). Its properties are as follows:

1. filtrationThe precipitating crystal was collected by filtration
2. washwashed with 50 ml of water