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Chemistry Forums for Students => Organic Chemistry Forum => Organic Chemistry Forum for Graduate Students and Professionals => Topic started by: wseguins on August 12, 2014, 01:58:08 PM

Title: Method for purifying pyruvic aldehyde
Post by: wseguins on August 12, 2014, 01:58:08 PM
Hello guys, I'm trying to do the oxidation of propyleneglycol to pyruvic aldehyde. Already have used calcium hypochlorite and DMSO. However, I have had a lot of trouble to purify and characterize the pyruvic aldehyde. Do you know another methodology of oxidation (cheap) and a way to purify my product?
Thank you!
Title: Re: Method for purifying pyruvic aldehyde
Post by: discodermolide on August 12, 2014, 02:00:22 PM
Try bleach/Tempo in dichloromethane/water with good stirring.
Title: Re: Method for purifying pyruvic aldehyde
Post by: wseguins on August 12, 2014, 02:36:44 PM
Try bleach/Tempo in dichloromethane/water with good stirring.


I was the oxidation of n-propanol and iso-propanol hypochlorite. I Had good results in the oxidation of propylene using DMSO. The problem is the purification of pyruvic aldehyde, because I don’t find methodologies of purification. I found a methodology that utilizes sodium bisulfite, however the DMSO prevents the formation of crystals.
Title: Re: Method for purifying pyruvic aldehyde
Post by: discodermolide on August 12, 2014, 02:42:58 PM
That's why I suggested a different systen for the oxidation. DMSO is quite difficult to remove.
Title: Re: Method for purifying pyruvic aldehyde
Post by: wseguins on August 12, 2014, 02:55:53 PM
That's why I suggested a different systen for the oxidation. DMSO is quite difficult to remove.

You have every reason.  :'( :'( :'(