文献中这样的压力可以达到吗? 文献看到如下:the compound n,n-dimethyl-n-(2-ethoxycarbonyl) ethylamine (compound a) was preparedby adding 40 g (0.45 mol) of n,n-dimethyl-n-2-ethylamine(aldrich) to 60 g (0.51 mol) of diethylcarbonate. the solution waskept at 70 .c for 48 h and then distilled at 70c and0.5 torr. 0.5torr的压强,我算了一下一般实验室水泵和油泵都达不到,为何文献如此写? 我的产物(液体)280+-25.c,用什么方法弄出来?给点建议 查看更多