Sintesi del metilone semplice (bk-MDMA)

karamelosanto

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HI, Grazie per aver condiviso questa sintesi, credo sia molto chiara.
Vengo dal Sud America e qui è un po' difficile trovare il DCM. Tuttavia, posso provare a trovarlo in qualche modo. Forse acquistandolo dalla Cina.
Vorrei chiedere. Puoi mettere tutti i reggenti in una lista con le quantità per rendere un po' più facile capire cosa devo comprare. Se è possibile con un prezzo stimato.
Grazie!!!
 

Professor11

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Pode me mandar uma mensagem? Sou da América do Sul também, estou iniciando na produção de Metilona.
 
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La tabella mostra che la densità del 40% di metilammina è di 0,89 g/cm3, quindi in 20 ml si ottengono 7,18 g di gas metilammina puro.
Confrontiamo i pesi molecolari della metilammina e del suo cloridrato:
M (CH3NH2)HCl = 67,518 g/mol
M CH3NH2 = 31,057 g/mol.
Rapporto = 2,174
Se si utilizzano le proporzioni della sintesi, occorrono 15,6 g di cloridrato di metilammina per sostituire 20 ml di soluzione di metilammina al 40%.
Il cloridrato di metilammina deve essere sciolto in anticipo nella proporzione di 1 g per 2,5 ml di acqua (15,6 g e 39 ml).
Preparare una soluzione di idrossido di sodio (NaOH) di 18g e 54ml di acqua, lasciarla raffreddare e versarla in una beuta con la soluzione di 2-bromo-3,4-metilendiossiprofenone. Successivamente, aggiungere la soluzione di cloridrato di metilammina. Proseguire quindi secondo le istruzioni.
 
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arundo

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Hello, I'm doing the math, and I see that the molar ratio of NaOH isn't equivalent with methylamine HCl. It doubles. It's for some reason?
 

antrax

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Voglio provare la sintesi chimica del bk-MDMA Ho già acquistato tutti i prodotti chimici necessari, partirò direttamente dal precursore 2-Bromo-3',4'-(metilendiossi)propiofenone (numero CAS: 52190-28-0) poiché l'ho già acquistato da un fornitore cinese di prodotti chimici e l'ho pagato 280 dollari per 1 kg con spedizione inclusa, da 25 kg pagherò 200 dollari per ogni kg.
kg con spedizione inclusa.

Ho acquistato la soluzione acquosa di metilammina al 40% da un fornitore polacco, anche se non è stato facile trovarla, e gli altri prodotti chimici sono facilmente reperibili sul mercato nazionale, tranne l'acido cloridrico al 36%, ho trovato solo l'acido cloridrico di grado analitico al 35-38% che ho acquistato, il solfato di magnesio non sapevo quale acquistare quindi ho comprato quello anidro.



Seguirò la seguente sintesi chimica del bk-MDMA poiché mi sembra più semplice di quella che hai condiviso, ma potrei sbagliarmi, vorrei che mi dessi la tua opinione.

http://bbzzzsvqcrqtki6umym6itiixfhni37ybtt7mkbjyxn2pgllzxf2qgyd.onion/threads/bk-mdma-synthesis-easy-and-fast-method.6423/

Grazie!!!
 

Eddybeaumont

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hello mate, can you give me an address to buy cas 52190-28-0 please?
 

Osmosis Vanderwaal

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Someone asked me the other day about using sesamol to get MD-P1P, and it looked possible. Any opinion on that?
DBVaQ6hicT
 

Wan Jack

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In a reaction kettle equipped with a condensing reflux, stirring, dropping and heating device, 111.3 g of catechol, 500 ml of dichloroethane and 166 g of ZnCl2 were added, stirred, cooled to 0-5°C, and 140 g of propionyl chloride was slowly added dropwise for about 2 hours, then the temperature was raised to 20°C and the reaction was continued for 15 hours. After the reaction was completed, water was added for dilution, and the organic phase was separated. The organic phase was sequentially acid-washed and washed with water, dried with sodium sulfate, desolventized, and the residue was recrystallized from ethanol to obtain 144 g of solid 3,4-dihydroxypropiophenone with a melting point of 145-146°C, a content of 98%, and a yield of 85%.
 
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William D.

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Yes, this method is more understandable. But I heard that you can use iodine as a Lewis acid catalyst. For more moderate conditions. I did not have time to check it, but I think that there is need study. Because the chinese intermediate of this substance have is of very poor quality, I think they have problems with the synthesis.
 

Wan Jack

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Please refer to the next step( Patent: US1964973 , 1932)
 

Wan Jack

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Sesamol Obtain MD-P1P No relevant information found
 

Wan Jack

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Preparation of 3,4-methylenedioxypropiophenone
Methanesulfonic acid (MSA, 288 g) and propionic anhydride (156 g) were charged into a 1-liter reaction flask. The mixture was cooled to 0°C and 122 g of 3,4-methylenedioxybenzene (MDB) was added under stirring. The reaction mass was maintained at 0°C to 5°C for 4 hours under stirring. After the completion of the reaction, the reaction mass was diluted with water and the 3,4-methylenedioxypropiophenone product and unreacted MDB were extracted using toluene. The toluene layer was distilled to recover 13 g of unreacted MDB and obtain 142 g of 3',4'-methylenedioxypropiophenone (GC purity > 98%, yield 131% w/w based on consumed MDB). The water layer was distilled to recover 273 g of MSA (purity > 98%), which could be reused in subsequent batches.
 
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