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Topic: quinones  (Read 3951 times)

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Offline dana

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quinones
« on: December 06, 2006, 02:43:55 PM »
Hello,
Does anyone know how to isolate quinones from vegetals (my extraction plant being Urtica dioica)?
Thx for any suggestion
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Offline mir

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Re: quinones
« Reply #1 on: December 06, 2006, 04:26:51 PM »
My guess:
Quinones is not water soluble. So make a warm extract perhaps in ethanol? Filtrate it, and do a TLC for your record. Then perhaps pour in some alkali water solution (to remove acids), extract the solution with diethyl ether? Wash it with brine. And another TLC of the organic fraction?
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Offline Ψ×Ψ

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Re: quinones
« Reply #2 on: December 06, 2006, 08:24:28 PM »
Depending on the quinone...might not be soluble in much of anything.    :-\
React with something and isolate the product?
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Offline dana

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Re: quinones
« Reply #3 on: December 07, 2006, 03:07:15 AM »
 Thx for the suggestions.
So can i work in the open air or i must work under protected atmosphere like N 2,
CO 2?
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Offline mir

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Re: quinones
« Reply #4 on: December 07, 2006, 05:00:41 AM »
Please do an effort first, and do a reading into literature, ask the literature first. This is the first step to go for solving your problem. Look into solubilities for your quinones in Handbook.
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No single thing abides, but all things flow.
Fragment to fragment clings, and thus they grow
Until we know and name them.
Then by degrees they change and are no more
The things we know.
- Titus Lucretius Carus

http://www.ife.no
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