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Author: Subject: inhibitors of cannizarro reaction
John paul III
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[*] posted on 2-5-2018 at 13:05
inhibitors of cannizarro reaction


hello, it's me shitposting again,

What could be used to prevent cannizarro reaction taking place
in formaldehyde with Ca 2+ ions in it?
I can't use a neutral salt, but maybe adding
carboxylic acid in excess to lower pH would do it?
Or are there known inhibitors of the reaction?

[Edited on 2-5-2018 by John paul III]

[Edited on 2-5-2018 by John paul III]
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Reboot
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[*] posted on 3-5-2018 at 03:59


Is the cannizarro reaction happening unintentionally because the calcium ions are acting as a base? (Usually it's driven by hydroxide when done deliberately...) If so, my first instinct would be to try adding a chelating agent like EDTA to bind/neutralize the calcium. (Adding acid as you suggest might work as well.)

I'm curious; why can't you add a neutral salt?
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Magpie
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[*] posted on 3-5-2018 at 07:28


My understanding of the cannizzaro reaction is that it requires a base usually KOH or NaOH. If the solution was acidic I don't think the cannizzaro would occur.



The single most important condition for a successful synthesis is good mixing - Nicodem
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