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Topic: compounds  (Read 2738 times)

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Offline Saionji

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compounds
« on: August 15, 2010, 04:38:35 PM »
1)The left compound is aromatic right? but what are all the conditions to always deduce this?
2) The three compounds are heterocyclic because they have N and O and are they cyclics?
3) The two right, have the same organic groups : ketone, ether and alcohol?



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Offline Jorriss

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Re: compounds
« Reply #1 on: August 15, 2010, 04:41:50 PM »
Is the far right one aromatic? I think not, but I just want to double check? I'm pretty sure not but I got the idea in my head and now it won't leave unless I bring it up.
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Offline ardbeg

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Re: compounds
« Reply #2 on: August 15, 2010, 08:14:53 PM »
http://en.wikipedia.org/wiki/Aromaticity

remember the 4n + 2 rule for pi-electrons - 6, 10, 14 etc = aromatic
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Offline cundi

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Re: compounds
« Reply #3 on: August 16, 2010, 11:39:27 AM »
The rule 4n+2 is necceary but is also needed a cyclic conjugation.
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