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Topic: Check my answer on isomer  (Read 3806 times)

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Offline shalikadm

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Check my answer on isomer
« on: June 09, 2012, 02:15:28 PM »
The molecular formula is    C8H8O
I got 7 isomers..But my chemistry note doesn't shows the first two..help me please..
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Offline discodermolide

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Re: Check my answer on isomer
« Reply #1 on: June 09, 2012, 02:19:08 PM »
Quote from: shalikadm on June 09, 2012, 02:15:28 PM
The molecular formula is    C8H8O
I got 7 isomers..But my chemistry note doesn't shows the first two..help me please..


The first two are enol tautomers of number 3 and I would not call them isomers in the true sense of the word. You will need a base to form them, therefore they do not exist in so far as you can put them in a bottle.
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Offline shalikadm

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Re: Check my answer on isomer
« Reply #2 on: June 09, 2012, 02:26:19 PM »
Quote

The first two are enol tautomers of number 3 and I would not call them isomers in the true sense of the word. You will need a base to form them, therefore they do not exist in so far as you can put them in a bottle.

So how can I reject the first 2 as it's not taught to us..We have only taught to draw isomers-structural and stereoisomers... ???
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Offline discodermolide

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Re: Check my answer on isomer
« Reply #3 on: June 09, 2012, 02:30:01 PM »
Quote from: shalikadm on June 09, 2012, 02:26:19 PM
Quote

The first two are enol tautomers of number 3 and I would not call them isomers in the true sense of the word. You will need a base to form them, therefore they do not exist in so far as you can put them in a bottle.

So how can I reject the first 2 as it's not taught to us..We have only taught to draw isomers-structural and stereoisomers... ???

The first two can only be obtained under special conditions. There are only 5 isomers.
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Offline shalikadm

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Re: Check my answer on isomer
« Reply #4 on: June 09, 2012, 02:37:08 PM »
Quote from: discodermolide on June 09, 2012, 02:30:01 PM
The first two can only be obtained under special conditions. There are only 5 isomers.
If I was given to draw all the isomers of C8H8O,then how can I think that they are not  isomers....I have no knowledge about enol tautomers..sorry about that...I didn't find such thing in our cause work...
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Offline discodermolide

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Re: Check my answer on isomer
« Reply #5 on: June 09, 2012, 02:39:39 PM »
Quote from: shalikadm on June 09, 2012, 02:37:08 PM
Quote from: discodermolide on June 09, 2012, 02:30:01 PM
The first two can only be obtained under special conditions. There are only 5 isomers.
If I was given to draw all the isomers of C8H8O,then how can I think that they are not  isomers....I have no knowledge about enol tautomers..sorry about that...I didn't find such thing in our cause work...

You said yourself above that they are not in your notes. They are isomers but not in the sense that you can put them in a bottle!
I can't say more that that.
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Offline shalikadm

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Re: Check my answer on isomer
« Reply #6 on: June 09, 2012, 02:42:43 PM »
Quote from: discodermolide on June 09, 2012, 02:39:39 PM
You said yourself above that they are not in your notes. They are isomers but not in the sense that you can put them in a bottle!
I can't say more that that.
Anyway...thanks for the check !... :D
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Offline sjb

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Re: Check my answer on isomer
« Reply #7 on: June 09, 2012, 03:31:49 PM »
Do you want to include things like cyclooctatetraene oxide or similar? ( http://dx.doi.org/10.1021/ja01020a058 )
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