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ghx2156
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| In the middle of shutting wreath reaction 2-(the ¦Â -Mao oxygen A radicle)-3-the Mao Mao is sour(2 bs) to have two positions can shut wreath, since an and b so have two kinds of outcomes 3 bs and 3 cs.Its equation such as Scheme 2.We pass a 1 H, NMR discovers 2-(the ¦Â -Mao oxygen A radicle)-3-shut wreath reaction inside the Mao Mao sour member the occurrence is in the a, at 1 H NMR the table diagram is last to see ¦Ä 8.97 have a single Feng, namely 14 of the compound 3 bs up, it 1 H NMR see figure 1.If the chemistry of Fang wreath district moves to have three single Fengs when the b shuts wreath, namely 8 of the compound 3 cs and 13 and 15.So can judge a 2 bs to shut wreath in the a, namely outcome 3 bs.This and theoretically also fit together, because an electronics density is bigger than a b and be occurrence in person electricity should shut wreath in the a while replacing reaction |
2Â¥2008-11-17 20:52:34
zch1023
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3Â¥2008-11-18 09:08:33













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