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Did anyone check the final purity of the crystals by GC-MS? Any idea what range might be as crystals won't really grow if there are impuritues present?
You can add your methylamine HCL to 2-bromo ...in any solvent and add slowly correct amount NaOH in Water 1:5, then Methylamine HCL will turn in methylamine gas or in Water ....
When adding m40, should the mixture be cooled to add the entire portion fairly quickly?
Hi if I want to make 3 cmc instead of 4mmc with this synthesis which reactants i must to change? Can i use this synthesis with x2 scale?
Hello, 4'-methylpropiophenone to 3'-methylpropiophenone and yes, correct.
3cmc is not methylopropiphenone...This is 3mmc.
3cmc- 2b3chloro
First i put 400 toluene,100
Hi,i did it like this
100 2br4m,500 toluene and 200 methylamine 40% stiring until it reaches 40 degrese after i add slowly 300dmf and stir again about 1hour .
For acidification i use55ml hcl 33%.
I don't know what i do wrong becouse my yield is around 15g after purification and crystalizati
Yes, I did it personally. Usually, there are not a lot of side-products. The synthesis is very easy and it is hard to spoil a final product of 4-MMC. Also, crystallization will purify it properly to make a large crystals.
Sir, I want to ask, can mephedrone be made in sulfate version, and can mephedrone sulfate be as stable as mef hcl.
guys what does it mean organic synthesis ?
[question]
I already done barely - successful synthesis.
basic info:
I started from 50g of 2-bromo-4-methylpropiophenon (so I should get minimum around 25 gram of final 4MMC product)
everything came slight to step when final product starts form
My problem is:
after acidification (ph is goods should be) I let freebase to cool in freezer, after more than 10hours my yield was around 12g of bone-dry product,
but in this was still a lot of product so I add acetone to it and let it cool again then I got extra 5 more grams of it.
Can anybody tell me what's problem?
my conception is
"there is too less solvent at the and and Mephedrone have too small space to form" but I dont know is it true or not.
can anybody help me found a solution?
Best regards and thanks.
It isn't correct. You can evaporate filtrate after first crystallization to 1/2 and freeze it. Then you'll get less pure mephedrone, which can be recrystallized."there is too less solvent at the and and Mephedrone have too small space to form" but I dont know is it true or not.
it's the opposite, you should evaporate the solvent, not add more
adding more solvent will make more space for your product to be dissolved in, evaporating the solvent makes "less space"
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