Hexavalent
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Synthesis of 2,4-dinitrophenylhydrazine (Brady's reagent)
Can anybody suggest a viable route to 2,4-dinitrophenylhydrazide starting from either nitric acid or a nitrate salt, perhaps phenol and hydrazine
sulfate?
"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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stygian
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Would starting from trinitrobenzene, reducing a single NO2, diazotizing and reducing again be the way to do it? Or is a more circuitous method needed.
http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=cv2... claims hydrazine sulphate + dinitrochlorobenzene does the trick.
[Edited on 11-3-2012 by stygian]
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unionised
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I have don e the analogous reaction of dinitrochlorobenzene with methylhydrazine to get dinitrophenyl methyl hydrazine.
I don't really recommend the reaction of a carcinogen with an unusually potent sensitiser to make a borderline explosive as an experiment for the
amateur.
Have you run across a problem buying DNPH?
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Hexavalent
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I have never attempted to buy it . . .I would just like to prepare a sample for testing for carbonyl groups in numerous samples.
"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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Nicodem
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Thread Moved
11-3-2012 at 12:44 |
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