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"1,2-Dimethyl-3-nitrobenzene and NBS, as a bromination reagent,was dissolved in 250mL of CCl4 containing AIBN as a radical initiator, and heated to reflux for 12h. The reaction mixture was then cooled, and any floating materials were filtered off. The solution was extracted with chloroform and washed with water.After evaporating the chloroform, the resulting yellowish oil was recrystallized from cold methanol using dry ice/methanol." 我是把CHCl3加入到过滤得到的虑液中的，但是CCl4和CHCl3（chloroform）是相溶的，所以没有萃取成功，麻烦大家给我看一下是我理解和操作错误还是文献有问题，如果是我理解错误的话麻烦指教一下应该怎么操作 Thanks!... |
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2楼2007-09-29 15:39:10
shangyq
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3楼2007-09-29 15:45:50
4楼2007-09-29 16:07:11