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Topic: Huang-Minglon modification of wolff-kishner  (Read 3602 times)

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Offline agodzilla

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Huang-Minglon modification of wolff-kishner
« on: September 17, 2012, 09:20:30 PM »
I have to do the Huang-Minglon modification of the wolff kishner reduction but our professor is only giving us hydrazine sulfate and in most of the stuff I have read it asks for hydrazine hydrate. How would I go about converting it. Do I have to use KOH in 2 equivalent amounts in water and then do a suction filtration?
Thanks
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Offline agodzilla

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Re: Huang-Minglon modification of wolff-kishner
« Reply #1 on: September 17, 2012, 09:54:51 PM »
Or perhaps use barium hydroxide? That would salt out?
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Offline agodzilla

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Re: Huang-Minglon modification of wolff-kishner
« Reply #2 on: September 17, 2012, 10:29:59 PM »
I just found out that I can also get hydrazine 2hcl
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Offline discodermolide

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Re: Huang-Minglon modification of wolff-kishner
« Reply #3 on: September 18, 2012, 01:00:34 AM »
If you have the HCl salt just add the KOH to it in the reaction solvent.
This will generate the free hydrazine, no need to and don't attempt to isolate it.
Then just carry out the reaction as described.
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Offline agodzilla

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Re: Huang-Minglon modification of wolff-kishner
« Reply #4 on: September 18, 2012, 03:52:21 AM »
Thank you so much
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