How to create methcathinone from pseudoephedrine?

[DeadEye]

I got Lorinase-D pills which contains Loratadine and Pseudoephedrine, i will crush it to powder then wash it with ethanol then filter it then wash with water then filter it to have a good % of pseudoephedrine.

Then I will add Potassium Permanganate to the pseudoephedrine to do the following:
C10H15NO + KMnO4 = C10H13NO + H2O + MnO2 + KOH
but i dont know how to seperate methcathinone from the rest of products, any help will be appreiciated!

BTW if there was any remanants of Loratadine it will react with KMnO4 as following:
C22H23ClN2O2 + KMnO4 = CO2 + H2O + HCl + K2CO3 + MnO2 + NO2

 

[Eleusius_hive_reboot]

H2O2 in Acetic Acid is done by me , very succesfull. you have to quench the reaction by sodium-bisulfite solution.
an everything in chilled condition. especially the alkalization to aquire the freebase is a bit tricky (because of racemization, keto-enol tautomerism mechanics)