Mefedrona (4-MMC) sintēze; viegli veicama - augsta iznākuma pakāpe

[tucoXxX]

Es gribu gandrīz 1 kg gatavā produkta. vai es varu to izgatavot 3 reizes lielāku reaģentu daudzumu?

 

[olduser]

labāk ņemt x4 : 2Kg bromketona, daži cilvēki pat nesasniedz 50% iznākumu + ja vēlaties to kristālu formā, jūsu iznākums samazināsies

 

[w2x3f5]

Nav pietiekami daudz šķīdinātāja, 2,5 stundas ir pārāk daudz un temperatūra pārāk augsta, viela pēc skābes pievienošanas izrādījās ļoti netīra.

 

[SonicNL]

Temps un laiks ir īstais. Jūs, iespējams, esat kļūdījies.

 

[ghostimage]

28-32с, 1h40min, full reaction so i agree with you, i am a bulk manufacturer, make minimum of 15kgs in one turn, so this parameters cost me about a year of experiments, and you here give it to people, who just dont belive you....ahahahah what a lol ;(

 

[HerrHaber]

Nesen man izdevās iegūt vairāk nekā dzirdēto 4MMC hidrohlorīda iznākumu brīdī, kad to biju vismazāk gaidījis. Pirms es to publiskoju visiem, es uzskatu, ka ir nepieciešami vairāk nekā tikai 5 sērijas (no 5 sērijām 2 pēc kārtas bija ar augstu iznākumu, tad 2, par kurām es domāju, ka tās uzlabos, bet neuzlaboja, un vēl viena ir trīskārša, kas nepieciešama, lai es to varētu apgalvot). Tomēr man pietrūka sīkumi, un es ar nepacietību gaidu, lai pilnībā dokumentētu to ar attēliem un visu, kas. Un, lai mani nesodītu par "vērtīgās" informācijas noklusēšanu, varu apmainīties ar dažām pretēji domājošām sagatavošanas detaļām:

-maisīšana ir ļoti svarīga (lai DCM un ūdens slāņi būtu visciešākajā kontaktā bez fāžu pārneses katalizatora).
-salīdzinoši ilgs reakcijas laiks (apmēram 6 līdz 8 h, es izmantoju pārtraukumu, vienkārši pārtraucot maisīšanu, pieņemot, ka, ja slāņi ir atdalījušies, reakcija ir gandrīz apstājusies).
-nepievienoja karstumu (mana trešā un ceturtā darbība bija vidēji un zemāki iznākumi, kad tika piemērota maiga karsēšana).
-maisījuma un reaģentu atdzesēšana (skābes pakāpes laikā atdzesēti šķidrumi deva vislabāko iznākumu).
-ātri filtrēt (tūlīt pēc cieto daļiņu nogulsnēšanās, neļaut tām palikt, jo daļa produkta nonāks šķīdumā).

Ceru, ka tas palīdzēs, un es apsolu atgriezties ar sīkāku informāciju un kāpēc ne, apstiprinājumu no cita aktīva dalībnieka.

 

[mcdonalds]

hello,
i'm not sure why condenser is used in this syntessis.
is correct that is for condense methylamine gas and keep it in the reaction

 

[Naruto]

No

 

[olduser]

yes, but as methylamine is already in excess I guess it's used to reduce the smell

 

[HerrHaber]

yes, but harmful even more so

 

[William D.]

If you use cooling with liquid nitrogen, the reaction mixture in the flask would simply freeze . Therefore, only an excess that is filtered or evaporates into the atmosphere

 

[Ranbir Singh]

How can change mephedrone powder to crystel form please tell me

 

[dnBQByvHb8Zkawbjpx]

Using the process called crystallization: http://bbzzzsvqcrqtki6umym6itiixfhn...n/threads/mephedrone-4mmc-crystallization.72/

 

[agness]

Can I use a Ethyl acetate instead of Dichloromethane?

 

[olduser]

Yes

 

[lucky2222]

hello thank you for info knowledge was wonder on the sop if you had methylamine HCL instead of methylamine 40%aq what step would you use instead to make it a liquid ? thank you again for your time

 

[William D.]

@lucky2222 there is a lot of information on this forum about this. You can use water or alcohol with sodium hydroxide or triethylamine to produce gas. Triethylamine is more convenient in some cases if it is available to you.

 

[Blazey]

nice, i missed out on this chem before the bans in the uk, glad to see its around still, i wanna try it me as I love mdma

 

[lucky2222]

hello was wondering if there away to substitute methylamine 40%aq with methylamine hcl in this sop ?

 

[Rhales]

Sry I don't understand clearly your question. The addition of water is used to dissolve the polar impurities in the solution after the reaction (2B4M, methylamine, etc). You need to let it a few minutes then throw away all of the water, only the oil stays.
You can addapt the protocol to 3mmc aswell, you need to use 2-bromo-3-methylpropiophenone as main reagent and keep the same molar ratio (as they are isomers, you can keep the exact same amounts).

 

[olduser]

Sry I don't understand clearly your question. The addition of water is used to dissolve the polar impurities in the solution after the reaction (2B4M, methylamine, etc). You need to let it a few minutes then throw away all of the water, only the oil stays.
You can addapt the protocol to 3mmc aswell, you need to use 2-bromo-3-methylpropiophenone as main reagent and keep the same molar ratio (as they are isomers, you can keep the exact same amounts).

 

[Rhales]

If it's your first batch, I recommend using protocols that has been written by the forum experts. These are good too but hasn't always been tested and are more about experimentation once you already know the synth. WillD threads about mephedrone are really good

 

[olduser]

If it's your first batch, I recommend using protocols that has been written by the forum experts. These are good too but hasn't always been tested and are more about experimentation once you already know the synth. WillD threads about mephedrone are really good