ORGLIST: None

From: Amy Austin (just4aa$##$yahoo.com)
Date: Mon Mar 19 2001 - 23:05:51 EST

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When oxo groups participate in nucleophilic attack,
the mechanism is usually written with the pi electrons
donating to the electrophile. However, I have recently
seen a mechanism in which the nonbonding electrons
were donated. Is there a preference for which
electrons donate? Perhaps electrons are defuse enough
that both sourses donate? Thanks in advance.




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