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Topic: Question about optical isomers  (Read 4102 times)

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Offline jsilver212

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Question about optical isomers
« on: October 30, 2006, 05:41:11 PM »
Hi this is my first time posting a question to this site....this is actually taken from a yahoo post but we just had this exact question on an exam and want to confirm the answer....

a) How many chiral carbons are there in this carbohydrate?

b) How many optical isomers does this carbohydrate have ?

   CHO
     l
H-C-OH
     l
H-C-OH
     l
CH2OH

Thanks,
J
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Offline Borek

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Re: Question about optical isomers
« Reply #1 on: October 30, 2006, 05:58:49 PM »
Please read forum rules.
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Offline Dan

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Re: Question about optical isomers
« Reply #2 on: October 30, 2006, 05:59:30 PM »
yeah, we can't confirm the answer until you give an answer...
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Offline jsilver212

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Re: Question about optical isomers
« Reply #3 on: October 30, 2006, 06:07:28 PM »
sorry didn't realize i had to post answer as well.

Well, many people I talked to said 2 chiral carbons, but I really thought there were three, since the "environments" surrounding each carbon were different.
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Offline mike

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Re: Question about optical isomers
« Reply #4 on: October 30, 2006, 06:17:49 PM »
In general a chiral carbon is one with four diffeerent groups attached to it. So it must be tetrahedral and it should have four separate unique groups attached to it.
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