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Topic: pentose furfuration reaction  (Read 4038 times)

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Offline victor

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pentose furfuration reaction
« on: May 15, 2006, 09:58:11 AM »
I was given this question when I face carbohydrate practical assignment...can anyone explain the mechanism of this reaction??I totally confused.. ???
« Last Edit: May 15, 2006, 10:32:18 AM by victor »
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Offline AWK

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Re: fructose furfuration reaction
« Reply #1 on: May 15, 2006, 10:05:46 AM »
This is a reaction specific to pentoses (not to fructose)  in acidic medium
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Offline victor

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Re: fructose furfuration reaction
« Reply #2 on: May 15, 2006, 10:17:46 AM »
Um, yeah kinda like that.. ;D but I get confused about the re-formation of the structure between two of them...
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Offline HP

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Re: pentose furfuration reaction
« Reply #3 on: May 15, 2006, 12:15:51 PM »
When dehydrogenate some pentose like arabinose for example with diluted H2SO4 in heatin the process of formation furfurol is less revirsible than when using hexose sourse and the the formed w-oximethyl -furfurol  which is soluble in water for diference with furfurol and it cant be steamed  and it also destroy in hot  acidic media giving HCOOH and levulinic acid.
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