Mefedrona (4-MMC) sintēze NMP šķīdinātājā. Liela mēroga.

bubuka

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Es vēlos izgatavot MMC NMP. Problēma ir tāda, ka man nav pH papīra. Cik problemātiski ir tas, ja es beigās pārskābinšu? Vai jūs varētu man pateikt, cik daudz 30 % sālsskābes man jāpievieno beigās, ja izmanto 100 g 2b4m? Es skābinu ar DCM+ūdeni.
 
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William D.

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Ja jums nav pietiekamas pieredzes, jums ir jāizmanto indikatori, lai iegūtu maksimālu iznākumu. Ja tas nav iespējams, mēs varam aprēķināt jums minimālo skābes daudzumu, ko varat pievienot, lai iegūtu produktu.
 

TheVacuumGuy

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Ja iegādājaties elektrisko, dariet sev pakalpojumu, papildus iztērējot naudu, lai iegādātos stikla zondi. Pretējā gadījumā tā izšķīdīs (jā, tā jau ir bijis).
 

c01db100d_india_mephedron

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vai mēs varam aizstāt
sālsskābe uz bromskābe 48%
ja tas ir iespējams, cik liels ir produkta iznākums un cik lielu daudzumu mēs vēlamies.
 

William D.

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Jā, jūs varat izmantot šo aizstājēju. Produkta svars tādos pašos apstākļos būs nedaudz lielāks.
 

Hanna520

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Kāpēc lietot benzolu un NMP. Tā vietā izmantojiet etil acetātu. Daudz drošāk. Mainiet monometilamīnu aqua uz spirta bāzes.
Pēc ūdens pievienošanas. Atdaliet slāņus. Ņemiet "eļļas" slāni un destilējiet EA. Šis solis ir treknāks. Bāzes eļļu 1 stundu atdzesē saldētavā -19. Atdalās nereaģējušie blakusprodukti. Šķīdumu filtrē un iepilda AC un ar HCL37 % pH palielina līdz 5,5.

Sildīšanai neizmantot liesmu. Tā vietā izmantojiet vannu. Šāds iestatījums dos labus rezultātus. ;))
 
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momogf

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Labs veids, kā es pats izgatavoju 2bromo4metilēnpropiofenonu
 

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dnBQByvHb8Zkawbjpx

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Tas tika apspriests galvenajā tērzēšanā pirms dažām dienām. Vispārējais ieteikums bija destilēt EA 55 °C temperatūrā vakuumā (/negatīvs spiediens), lai uzlabotu iznākumu. Vai tas ir tas, ko jūs domājāt, vai arī jūs domājāt destilēt normālā spiedienā 77 °C temperatūrā (EA viršanas temperatūra)?

Es pirmo reizi par to lasīju, un es to izmēģināšu.

Es sākšu tēmu par 4-MMC iznākuma palielināšanu un aicinu jūs dalīties savās zināšanās. Šķiet, ka jūs par to daudz ko zināt.
 

William D.

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Jā, etilacetāta metode ir laba, ja jums ir metilamīna alc. šķīd. Tā atrisina daudzas problēmas.
 

Germanium

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Vai ir iespējams kristalizācijas stadijā kristalizācijas posmā pievienot sālsskābi, nevis burbuļot ar hlorūdeņraža gāzi?
 

dnBQByvHb8Zkawbjpx

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Jā, tā ir laba alternatīva sālsskābes izmantošanai, ja vien jūs gribējāt teikt "paskābināšana", nevis "kristalizācija". Kristalizācijas posmā skābi nepievieno.
 

goku1008

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but in video no Benzene used
 

CARLITOBRO

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can we replace NMP also with ethyl acetate and if yes how much for 100gr of 2b4m
 

HIGGS BOSSON

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Yes, you can use NMP, DCM, ethyl acetate
bbzzzsvqcrqtki6umym6itiixfhni37ybtt7mkbjyxn2pgllzxf2qgyd.onion/en/threads/mephedrone-4-mmc-synthesis-from-haloketone-in-ethyl-acetate-1-10-kg-scale.39/unread
 

baadwd332

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Hey, thanks for sexy video.
I wonder if you know Perrine paper about bupropion synthesis in NMP (Im sure you do, apparently he got an idea to use NMP).
If not, here you go:

Perrine, D. M.; Ross, J. T.; Nervi, S. J.; Zimmerman, R. H. A Short, One-Pot Synthesis of Bupropion (Zyban®, Wellbutrin®). J. Chem. Educ. 2000, 77 (11), 1479– 1480, DOI: 10.1021/ed077p1479


If you carefully read SI you will see that they had to wash out methylamine from organic layer. Had to be couple of times of water washing. In your procedure you don't even wash organic (benzene) layer, thus I wonder if you ever check melting point? Seems it might be mix of 4mmc and methylamine hydrochloride.
 

William D.

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In the synthesis that you wrote about, a large excess of pure amine is used. In our synthesis, an aqueous solution of amine is used. This changes the conditions. If you use more than two flushing, you will lose a lot in the weight of the product. The amount for several grams and quantities for several kilograms always change conditions, especially in the amounts of solvents and flushing water.
 

wikimiki

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What if I gonna replace NMP with DMF? Somebody tried? What proportion of DMF should be used if in use instead DMF?

Somebody have the stirring timings and than other timings for those synthesis description? It looks very interesting, I will be appreciate.
 

William D.

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DMF can be used like DMSO, but yield and some other conditions may differ.
 
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wikimiki

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William thanks a lot but could you tell me how much differ your recipe if I put DCM and what need to be changed if I put as someone said below DMSO and Toulene? I will be appreciate. With highest respect for the recepture you have posted I cannot get how in large scale production the 40-50% of yield can satisfy you?

Best regards
 

William D.

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For the test, you must mix BK4, dcm and methylamine as usual. You can add the amount of DMSO until the mixture becomes homogeneous. In this form, the reaction will be faster than usual. You control the reaction for the first time in temperature (when the mixture begins to cool, the reaction is finished, even without additional heating). After you add pure cold water and separate the lower layer and rinse again. Further steps are the same as you used (acidification with acetone or into the water layer)
 
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