Sorry for my english.
Preparation of benzaldehyde via oxidation of toluene by MnO2 in acidic environment.
Reaction speeds up if you add some HNO3 as a catalyst.
Parts by weight.
To the mixture of 180 parts toluene,1020 parts 65% H2SO4 and 1,2 parts of HNO3,during vigorous stirring is added in portions so that it dissolves, 70 parts of MnO2 (65% of which is activated MnO2,if the percent of activated MnO2 is higher,then you should take less amount), keeping the temperature of reaction mixture near 18-19 C.
When all MnO2 is added,the mixture is stirred for additional 30 minutes, then organic layer is separated from lower aqueous layer (which is MnSO4+H2SO4) and benzaldehyde is separated with steam distilling,and then purified with bisulfite.
The yield is 16 parts, which is 56% of theoretically possible according to activated MnO2.The unreacted toluene can be returned back. The disadvantage is a large amount of H2SO4...
This was uploaded by anonymous guy...
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...Preparation of activated MnO2...
Ask Antoncho actually,cause this has to be tweaked...
But it`s easy...
I guess this is really amph from shit.
Good luck.
P.S. There are couple of patents concerning this question in Russian,i can translate them later if you want.
There are couple in German also DRP 107722 (1899)
DRP 101221 (1898).
Everybody in the house with a half an ounce
Not weed I meant coke dumb ass sit down!