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Sergey KushThis crystal where You put for 1 g 0,7 ml water are hard to?What temperature there is 8 or - 8 and 12 hours
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This crystal where You put for 1 g 0,7 ml water are hard to?What temperature there is 8 or - 8 and 12 hours
This crystal where You put for 1 g 0,7 ml water are hard to?What temperature there is 8 or - 8 and 12 hours
after the reaction of 2b4m with methylamine in DCM, the free base of mephedrone is washed 2-3 times with an equal volume of water. the reaction with methylamine lasts 4 hours at a temperature of 32-36C. do not bring DXM to a boil (38C), as DHM hydrolyzes when boiling, the free base will be heavily contaminated. if the temperature/time is observed, the free base will be very clean.
thanks for answering
so do you add all the methylamine at once to 2b4m in dcm at 32-36C and then keep it at this temperature for 4 hours?
or do you add the methylamine slowly to 2b4m in the time span of 4 hours, and also keeping the reaction mixture at 32-36C?
which way is correct?
thanks for answering
so do you add all the methylamine at once to 2b4m in dcm at 32-36C and then keep it at this temperature for 4 hours?
or do you add the methylamine slowly to 2b4m in the time span of 4 hours, and also keeping the reaction mixture at 32-36C?
which way is correct?
thanks for answering
so do you add all the methylamine at once to 2b4m in dcm at 32-36C and then keep it at this temperature for 4 hours?
or do you add the methylamine slowly to 2b4m in the time span of 4 hours, and also keeping the reaction mixture at 32-36C?
which way is correct?
you need to understand that in our country (Russia - yes, that same abode of evil, where a fucking dictator rules, but good people live))) 2b4m is banned. so I have to make 2b4m by brominating 4m. and I get a concentration of approximately 2.5 liters of DCM per 1kg 2b4m. this must also be taken into account. available concentration of methylamine - 38% in aqueous solution
it is more correct to pour the entire volume of methylamine at once, but then it is very difficult to maintain the desired temperature. I do this: first I add 1/2 methylamine, and after 1 hour I add another 1/2 methylamine and continue stirring for another 3 hours. effective cooling is required in order not to raise the temperature above 36 ° C, since the reaction is exothermic and proceeds with a large release of heat
Sergey thanks very very much for you answer on my questions, do you close the reaction vessel with stopper or do you put condenser on top of it?
Is it better to stop the Methylamine gas from escaping completely, or is it better to try to condense it back?
If you put stopper on reaction vessel, does it produce pressure which has to be released during reaction?
And last, what is your yield from 1kg 2b4m? how much powder and how much then crystal after crystalization?
Hi guys. Any ideas under what conditions it is possible to obtain such 4mmc crystals?
I do not close the reaction vessel so as not to create excess pressure. the vessel is open all the way. I don't use a condenser or dephlegmator either. methylamine leaves the vessel, but only a small part - this is not essential (for this we use an excess of methylamine). yield with 1kg 2b4m approximately 670-690g of flour. in crystals - 640-650g
I do not close the reaction vessel so as not to create excess pressure. the vessel is open all the way. I don't use a condenser or dephlegmator either. methylamine leaves the vessel, but only a small part - this is not essential (for this we use an excess of methylamine). yield with 1kg 2b4m approximately 670-690g of flour. in crystals - 640-650g
Do you know any fine way to craft 4methylpropiophenone? Since, it's hard to find now as far as you know.
hlebsladky2Please check metcathinones post,you have total recipes,video tutorial to make 4..Do you know any fine way to craft 4methylpropiophenone? Since, it's hard to find now as far as you know.
4-MMC in dry methanol. T 15-20C, 1 week
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