作者okeydoke (风吹来的沙)
看板Chemistry
标题【问题】有机化学芳香化合物
时间Tue May 1 10:17:47 2007
undesired plysubstituion of an aromatic nucleus is most likely to be
encountered in the case of
a)Friedel-Crafts alkylation
b)Friedel-Crafts acylation
c)Nitration
d)Chlorination
a nitro group in a bencene ring will
a)activate the ortho position toward electrophilic substitubion
b)activate a ortho benzylic hydrogen atom toward abstraction by a base
c)activate a meta benzylic hydrogen atom toward abstraction by a base
第一题不知道为什麽
第二题完全看不懂在说什麽耶 >"<
请问有人可以解释给我吗？ 谢谢
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