反应详情

5.8 g. 4-Hydroxymethylpiperidine are dissolved in 100 ml. acetonitrile and cooled to -25° C. By the addition of 3.1 ml. 100% nitric acid, the base is converted into the nitric acid salt. To this solution is added a freshly prepared acetyl nitrate solution (prepared from 9.5 ml. acetic anhydride and 4.2 ml. 100% nitric acid in 40 ml. acetonitrile at -25° C.) and the reaction mixture then stirred for 3 hours at this temperature. The reaction solution is diluted with 300 ml. diisopropyl ether. The crystals obtained are filtered off with suction and washed with diethyl ether. There are obtained 9.5 g. (82% of theory) of the nitrate of the title compound; m.p. 64°-65° C.

1. additionBy the addition of 3.1 ml
2. additionThe reaction solution is diluted with 300 ml
3. customThe crystals obtained
4. filtrationare filtered off with suction
5. washwashed with diethyl ether
6. customThere are obtained 9.5 g