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作者 volley 在 PTT [ Chemistry ] 看板的留言(推文), 共127則
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4F→:inductive effect會隨距離增加而減少,所以應該也要考慮距離06/25 09:24
5F→:我比較傾向持平...也就是與質子差不多...06/25 09:26
11F→:並不會唷~~~ 取代基電性對反應性的影響並不只限於芳環系統06/27 11:30
1F推:http://en.wikipedia.org/wiki/B12 看起來是三價06/01 21:09
4F→:一級醇氧化成酮?05/12 12:20
7F推:定量?先做濃一點再稀釋到所要的體積吧!04/30 10:10
1F推:aryl benzyl ester? 看嘸...04/16 06:21
3F→:樓上是???04/15 08:46
4F推:but i do not think the hard-soft consideration could04/11 22:58
5F→:explain why LiAlH4 behaves reductant but NaH behaves04/11 22:59
6F→:strong base! i think the electronegativity indeed can04/11 23:00
7F→:give good explaination about the difference between04/11 23:01
8F→:LiAlH4 and NaBH4.04/11 23:02
9F→:LiAlH4, which is almost the strongest reductant, is04/11 23:02
10F→:due to the coordination of aluminum atom onto reducible04/11 23:04
11F→:functional group. then hydride is induced to attack04/11 23:05
12F→:that functional group.04/11 23:05
13F→:NaH can not form such complex with reducible functional04/11 23:06
14F→:groups, thus that hydride can not be a reductant!04/11 23:07
2F→:蒸氣蒸餾???04/11 23:08
1F推:前者是激發態,後者是基態04/08 15:43
1F→:but也有只用甲苯和碳酸鈉就可以反應的例子...03/23 20:30
2F→:可能是case by case吧??? 我不清楚03/23 20:31
3F→:原po說的非常有道理,很可能是這樣!03/23 20:32