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Author: Subject: Alcohol oxidation via chromic acid
Boffis
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[*] posted on 26-7-2023 at 08:32


I have very recently used sodium dichromate and dilute sulphuric acid to oxidizes 2-pentanol to 2-pentanone on a roughly 0.5 molar scale. I obtained a 70% yield after distillation and encountered no particular difficulty. Pleased with the result. 2-pentanol was not completely miscible with the aqueous phase but with vigorous stirring this doesn't appear to be a big problem. For less water miscible materials acetic acid a suggested above is probably the way to go but remember to check the Bps are sufficiently different to allow isolation of the product.
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chornedsnorkack
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[*] posted on 27-7-2023 at 01:05


Tracking oxygen is actually the definition of Chemical Oxygen Demand. Which has been moved from KMnO4 to K2Cr2O7 as oxidant.
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