作者wicked (ReadyToGo)
看板Chemistry
標題Re: aniline在ortho位接上EDG時.....
時間Sat Nov 5 14:09:46 2005
[恕刪]
: 推 luoyang:ortho會有鄰位效應，算是立體效應 11/04 20:17
:
: this description may not be correct.
: basicity is the ability that a base traps a proton.
: is proton sterically bulky? Of course not.
: actually, to explain basicity by steric effect is "ridiculous"
:
:
: 推 peapea37:也就是說並非全部的EDG都會使aniline的鹼性降低囉?! 11/04 22:38
: 推 luoyang:鄰位效應:Morrison&Boyd 6/e 19.14&23.4 11/04 22:43
我想兩位講得都對,L大所說的應該是所謂的F-strain
如果酸夠bulky的話,這個效應是明顯的~~~
相反的,若是純粹質子酸的話,就會像V大所解說的那樣~~~
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有錯請指正
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: → peapea37:只有會與aniline形成H-bond的EDG才會使其鹼性下降,right? 11/04 22:42
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