Hello
For further research I need mesoxalate (as acid or salt). It is quite expensive in stores, so I decided to synthesize it in the lab. I tried to hydrolyze alloxan with alkali (NaOH or Ba(OH)2), but I only got alloxanate of the corresponding salt. I also tried to oxidize diethyl malonate with NO2 and NaClO2, but the oxidation did not work at all.
Does anyone have a working synthesis method? Or can anyone help me figure out what went wrong?