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机器翻译免谈，翻译为英文 本论文对Wittig 反应后处理做了改进，利用副产物三苯基氧磷易结晶的特点，先用重结晶的方法除去大部分副产物三苯基氧磷后，再用柱层析色谱纯化产物。我们发现该方法不但硅胶和溶剂用量较少，而且效果很好，具有一定的环保和经济意义。 |
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telomerase(金币+0,VIP+0):机译请注明，否则扣分！！！ 警告！！！ 11-28 19:05
| In this paper, post-processing of the Wittig reaction has been improved by using 3-phenyl-product characteristics of paraoxonase easy to crystallize, first used the method to remove most of recrystallization product of 3-phenyl-paraoxon after, and then column chromatography purified products . We found that the method is not only relatively small amount of silica gel and solvent, but also a good effect, with certain environmental and economic significance. |
2楼2009-11-27 18:13:35
telomerase(金币+0,VIP+0):机译请注明，否则扣分！！！ 警告！！！ 11-28 19:05
| In this paper, post-processing of the Wittig reaction has been improved by using 3-phenyl-product characteristics of paraoxonase easy to crystallize, first used the method to remove most of recrystallization product of 3-phenyl-paraoxon after, and then column chromatography purified products . We found that the method is not only relatively small amount of silica gel and solvent, but also a good effect, with certain environmental and economic significance. |
3楼2009-11-27 21:53:47
syh9288
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6楼2009-11-28 14:29:25
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jut215(金币+5,VIP+0): 12-2 17:34
jut215(金币+5,VIP+0): 12-2 17:34
| Post-processing of the Wittig reaction is improved by using 3-phenyl-product characteristics for paraoxonase easy to crystallize. The method is employed to remove most of recrystallization product of 3-phenyl-paraoxon, andcolumn chromatography purified products . The method leads to not only relatively small amount of silica gel and solvent, but also a desired effect, with certain environmental and economic significance. |
7楼2009-11-28 21:22:12
8楼2009-11-30 17:18:26